Table of Content

Volume 37 Issue 4
25 April 2021
Research Hotspots and Developing Trends on Hydrothermal Conversion of Waste Biomass: Based on CiteSpace Analysis for the Knowledge Mapping
ZHOU Zhu-meng, LI Dan-yang, WU Hua-shan, JIN Hong-mei
2021, 37(4):  409-420.  doi:10.19741/j.issn.1673-4831.2020.0204
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The ecological safety has been the focus and difficulty in management of waste biomass by reduction and recycling modes. In recent years, hydrothermal conversion technology has been developed rapidly, which is suitable for the treatment of waste biomass with high moisture content. In addition, it has great potential for the harmless treatment and high value-added utilization of waste biomass. In this study, 2 960 literatures were used as the data source, including 600 and 2 360 from CNKI and Web of Science databases, respectively, from January 2000 to December 2019. CiteSpace knowledge mapping software 5.5 was used to analyze authors, institutions and key words derived from the data source. Then the hot spots and development trend of this technology were analyzed based on the key words cluster analysis method. The results show that in terms of the global number of literatures on hydrothermal conversion of waste biomass, there were three stages between 2000 and 2019, including slow growth period (from 2000 to 2007), rapid growth period (from 2008 to 2016), and slight decline period (from 2017 to 2019). In the past two decades, among all the literatures the Chinese and English literatures associated with hydrothermal conversion of agricultural waste biomass kept growing. Chinese scholars have made outstanding contributions to the study of hydrothermal conversion of waste biomass. The research hotspots were focused on the production and properties of solid products (especially carbon-based materials) and liquid products (especially bio-oil). It is predicted that the developing trend of this technology will concentrate on the pretreatment of raw materials, technological conditions, reaction process, and the high value-added utilization of products. This study could provide references for the industrial development of hydrothermal conversion technology used in the field of ecological and safe treatment of waste biomass.
Advances on Effects and Mechanisms of Biochar on Chemical Forms of Heavy Metals in Contaminated Soil
MEI Chuang, WANG Heng, CAI Kui-zheng, XU Mei-li, HUANG Fei
2021, 37(4):  421-429.  doi:10.19741/j.issn.1673-4831.2020.0721
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As a new type of environmental remediation material with its special structural characteristics, biochar can be used to directly adsorb and fix soil heavy metals through electrostatic adsorption, ion exchange, functional group complexation, and precipitation. Biochar can also indirectly affect soil physical and chemical properties, such as soil pH, organic matter, redox potential, etc., which can also affect the forms of heavy metals in the soil. The form of heavy metals can have great influence on their biological activities and lead to different environmental effects. Based on the relevant domestic and foreign literature, this paper summarizes the impacts of different types of biochar on the chemical form of heavy metals in soil. The influences of physical, chemical and microbial mechanisms of biochar on the chemical forms of heavy metals were discussed. Further studies are needed to explore the interaction between biochar and microorganism and the impacts of its microbial mechanisms on the form of heavy metals through omics approaches.
Research Progress on Rapid Detection Methods for Pathogenic Microorganisms in Faeces
FU Zi-peng, LIU Cheng-bin, LI Qiu-ju, MAO Shun
2021, 37(4):  430-438.  doi:10.19741/j.issn.1673-4831.2020.0796
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In recent years, the protection and improvement of the rural ecological environment in China have received great attention. The harmless treatment and utilization of toilet faeces is one of the focuses of rural residential environment improvement. Pathogenic microorganisms in toilet faeces can infect human by polluting food or water, which brings great threat to public health and ecological environment. Therefore, research on rapid detection methods for pathogenic microorganisms in faeces is needed. This article reviews the recent research progress of fast detection methods for pathogenic microorganisms in faeces, which covers three emerging detection methods including nucleic acid detection method, immunological detection method and biosensor detection method. Nucleic acid-based detection methods amplify the target sequence, which can detect the specific genes of target pathogen with high detection accuracy. Immunological-based detection methods use antigen-antibody hybridization to develop detection kits that can quickly detect targets. Biosensor-based detection methods rely on optical and electrochemical analytical principles. It has simple sample preparation procedure, and the detection system can be miniaturized, modularized, and is integrable. This article compares the detection limit and detection time of these methods, and discusses their advantages, limitations, and practical application potentials.
Study on the Willingness of Rural Residents to Participate in the Environmental Governance of Human Settlements Based on the Theory of Planned Behavior: Taking Xinjiang as an Example
ZHAO Xin-min, JIANG Wei, CHENG Wen-ming
2021, 37(4):  439-447.  doi:10.19741/j.issn.1673-4831.2020.0560
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By exploring rural residents' willingness of participating in the governance of living environment, it can help solve the problem of rural environmental governance. Based on the survey data of 371 farmers in northern Xinjiang, this study used the bivariate Probit model to explore farmers' willingness of participating in and paying for the environmental governance under the framework of theory of planned behavior. As shown by the results, the behavioral attitudes, subjective norms and perceived behavioral control exert an important impact on the farmers' willingness to participate and pay. Among them, the cognition of the importance of environmental governance, intensity of media information dissemination and government subsidies exert an active impact on farmers' willingness to participate in and pay. Meanwhile, the cognition of environmental pollution, intensity of government input and launch of rural tourism play a crucial role in influencing farmers' willingness to pay. Besides, the level of education significantly affects farmers' willingness to participate and pay, but in different directions. Therefore, it is necessary to strengthen propaganda and education, establish and apply incentive and restraint mechanism flexibly, mobilize rural capable persons to play an exemplary role, and offer financial support to environmental governance, so as to inspire farmers' enthusiasm in participating in the governance of living environment.
Coupling Coordination Analysis of Farmers' Livelihoods and Rural Development in the Qinling-Daba Mountains: A Case Study of Luonan County in Shaanxi Province
YANG Yue, YUAN Xue-feng, MA Chao-qun, XU He-ping, REN Zhao-xia
2021, 37(4):  448-455.  doi:10.19741/j.issn.1673-4831.2020.0689
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Accurately grasping the coupling coordination relationship between farmers' livelihoods and rural development is of great significance for solving issues affecting farmers, agriculture, and rural areas, and promoting sustainable regional development. The livelihood capital status of 626 rural households in Luonan County, Shaanxi Province was calculated based on the sustainable livelihood framework proposed by the United Kingdom Department for International Development, and the development level of the villages in which the farmers are located was measured. Then, the relationship between farmers' livelihoods and rural development was studied using a coupling coordination model. The results are as follows: (1) The average livelihood capital level of the rural households in Luonan County was 0.171 4, which is relatively low. Within the overall level, the levels of social and physical capital were the highest, followed by natural capital, with levels of human and financial capital being the lowest. (2) Luonan County's average rural development level was 0.354 2, which again is relatively low. Especially in the less developed rural villages, there is significant room for improving the industrial development, human settlements, and resource endowments. (3) The level of farmers' livelihoods is lower than the level of rural development in most sample villages, and the livelihood levels of farmers need to be improved. On the basis of the findings, suggestions are made for the coordinated development of farmers' livelihoods and rural development. When farmers' livelihoods lag behind rural development, it is important to promote the development of modern agriculture and to improve living conditions, infrastructure, and public service facilities in rural areas to increase the value of the livelihood capital of the farmers. In villages where farmers' livelihoods are synchronized with rural development, but both remain in early developmental stages, more labor can be absorbed by changing the original model of industrial development and improving industrial development conditions to promote the coordinated development of both livelihoods and rural development.
Wetland Ecological Compensation Mechanism: A Case Study of the Poyang Lake
PANG Jie, JIN Le-shan
2021, 37(4):  456-464.  doi:10.19741/j.issn.1673-4831.2020.0789
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Wetland ecological compensation is one of the most important policy instruments to protect the wetlands and promote ecological civilization in China. Based on the general theoretical framework of ecological compensation, this paper presents a comprehensive analysis on the core issues of wetland ecological compensation in the Poyang Lake, i.e. compensation providers and beneficiaries, compensation rate and its differentiation, compensation vehicles and conditionality. The research show that the estimated compensation rate was 2 503.39 yuan·hm-2·a-1. The compensation rate is better to be differentiated by factors such as the extent of damages of crops resulted from the migrant birds protected in the wetland, the distance between the farmland and the wetland of the lake, the farmland quality etc. Among these factors, the most crucial one is the loss rate of crops in the farmland due to protection of wild birds with the wetlands as their habitat. Low rate of compensation, low penalty costs on noncompliances and low presence of enforcement are the root causes of the weak regime. Regarding compensation approach, it is necessary to combine multiple ways of compensation, or choose individual ways of compensation in phases. In order to improve the wetland ecological compensation program, it is needed to have clarified compensation beneficiaries and a upgraded compensation rate. It is imperative to fully consider the heterogeneity of farmlands and opportunity costs of protecting the wetland in differentiating the compensation, pay greater attention to the "conditionality" of compensation, and balance the equity and efficiency in the compensation program.
Spatio-Temporal Variation in Net Anthropogenic Nitrogen Input to the Xin'an River Basin and Its Responses to Payments for Ecosystem Services
WANG Yu-rong, ZENG Qing-min, CHEN Li-gen, LONG Kai-sheng
2021, 37(4):  465-473.  doi:10.19741/j.issn.1673-4831.2020.0676
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Net anthropogenic nitrogen input (NANI) is one of the critical reasons for the eutrophication of water bodies. Payments for ecosystem services (PES) reduce NANI by changing the production and living behaviors of residents in the basin area to solve the problem of eutrophication of water bodies. The Xin'an River Basin was taken as an example to evaluate the temporal and spatial changes in NANI during the implementation of PES from 2008 to 2017 by calculating N fertilizer application, atmospheric N deposition, agricultural N fixation, and net N food and feed imports. The response of NANI to PES was then examined and it was found that, during the research period, NANI to the Xin'an River Basin showed an overall downward trend. From the perspective of Huangshan city, the value of NANI first rose and then fell, and a significant decline occurred after 2012, that is the period when PES began to be implemented in the Xin'an River Basin. The use of N fertilizer was the main input source of N, and the N content of crop products was the largest item of N output. NANI dropped in Tunxi District and Shexian County. The inflection points of the change occurred were the second stage of PES in Xin'an River and the first stage of PES in Xin'an River, respectively. It could be concluded that PES in the Xin'an River Basin has effectively reduced NANI.
Priority Areas Recognition of Ecological Compensation for Soil and Water Conservation: Taking Dongting Lake Eco-economic Zone as An Example
LI Jiao, LI Lang, WANG Jie, ZHOU Cui-yan, NIU Qian, ZHANG Can-ming, TIAN Shu-rong
2021, 37(4):  474-483.  doi:10.19741/j.issn.1673-4831.2020.0848
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Being important to prevent and control soil erosion, ecological compensation for soil and water conservation is a specific practice of ecological compensation in this field . In order to effectively identify the priority areas for the payment of soil and water conservation compensation and optimize the use of special funds, the Dongting Lake Eco-economic Zone was taken as the research object, and the InVEST Model combined with the market value method, opportunity cost method and shadow engineering method were used to evaluate the value of soil and water conservation. According to the comprehensive status of soil and water conservation value, economic development level and ecological system vulnerability, the spatial area of soil and water conservation ecological compensation was divided on the scale of counties (cities, districts). The research results show that: (1) In 2015, the value of soil and water conservation in the Dongting Lake Eco-economic Zone was as high as 64.198 87 billion yuan. The spatial distribution of soil and water conservation value were significantly different, characterized by high value in the east and west and low in the middle; (2) The level 1 and level 2 areas classified by the Ecological Compensation Priority Sequence are mostly with ecological output and economic damage, while the level 3 areas are with ecological consumption and economic benefit; (3) Based on the Ecological Compensation Priority Sequence, considering the fragility of the ecosystem, the Dongting Lake Eco-economic Zone can be divided into priority compensation area, secondary compensation area, general compensation area and potential compensation area. The limited compensation funds should be mainly allocated to the priority compensation areas and secondary compensation areas, which is of great significance for improving regional water and soil conservation services and economic development, as well as preventing soil erosion.
Ecological Vulnerability Assessment in Huri Chagannoor of Inner Mongolia Based on RS and GIS Technology
ZHOU Ling-mei, WANG Shi-hang, QUAN Ling
2021, 37(4):  484-491.  doi:10.19741/j.issn.1673-4831.2020.0580
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With the global climate change and the interference of human activities, the ecological vulnerability of various regions has become increasingly prominent. In this study, according to the natural conditions and artificial interference on ecological vulnerability in Huri Chagannoor of Inner Mongolia, eight indexes such as topography, vegetation, soil, meteorology and land use etc. were selected. Based on RS and GIS technology, the analytic hierarchy process (AHP), entropy weight method and comprehensive index method were used to construct the ecological vulnerability assessment model, and the ecological vulnerability of this region in 2010 and 2017 was comprehensively and quantitatively analyzed. The results show that: (1) in 2010 and 2017, the integrated ecological vulnerability index was 3.516 6 and 3.235 0, respectively. The overall ecological vulnerability was in the medium and high level, but the ecological status was generally improved; (2) The regions with potential and mild vulnerability were mainly in the lake, river basins and high vegetation coverage areas in the south of the lake, that with moderate vulnerability generally in low vegetation coverage areas and dry lake basins, and that with severe and extreme vulnerability mainly in the bare land in the east, west and north of the study area; (3) The ecological vulnerability level of most areas to the north of the lake was higher than that of the south. However, during the study period, the ecological vulnerability level of the north decreased in a large area, and shifting from extreme vulnerability to moderate and mild vulnerability; (4) Due to the interaction of natural and human factors, the ecological vulnerability of Huri Chagannoor showed strong spatial autocorrelation characteristics.
Assessments of Ecological Quality in Jinjiang District of Chengdu City Using the FVC and RSEI Models
WANG Zhi-chao, HE Xin-hua
2021, 37(4):  492-500.  doi:10.19741/j.issn.1673-4831.2020.0511
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Rapid and accurate assessment of urban ecological quality and its change is of important reference to ecological construction and renovating in high-speed developing urban in central and western regions of China. Taking Jinjiang District in Chengdu City as example and choosing Landsat 5/8 images in 2002, 2009 and 2018, the ecological quality and its change in Jinjiang District from 2002 to 2018 were assessed. The results show that: (1) The values of FVC in 2002, 2009 and 2018 were 0.522, 0.493 and 0.502, respectively. It indicates that FVC of the research area decreased first and then picked up during the period of the 16 years, but the overall trend was in a decreasing state. The values of RSEI in 2002, 2009 and 2018 were 0.526, 0.517 and 0.505, respectively. It indicates that RSEI of the research area decreased in the 16 years. (2) The overall ecological quality in the research area was in ordinary status but continued to decline in 16 years. The decline mainly performed as the decrease of excellent and good quality areas. Ecological quality in the south part of the Jinjiang District, which consisted mainly of built-up areas, decreased dramatically. On the contrary, ecological quality in the north part of the Jinjiang District, which consisted mainly of old quarter, increased in the 16 years. (3) The distribution and variation of FVC was highly consistent with those of RSEI. FVC is the major positive factor for the ecological quality of the research area. With the rapid urban development, the built-up area has become the major negative factor. FVC and RSEI can comprehensively reflect the ecological quality and its change of Jinjiang District.
Ecological Health Assessment of Main Estuaries of Lake Taihu Based on Phytoplankton Index of Biotic Integrity
MA Ting-ting, FAN Ya-min, LI Kuan-yi, HU Zhong-jun, WU Zhao-shi
2021, 37(4):  501-508.  doi:10.19741/j.issn.1673-4831.2020.0446
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The study illustrated phytoplankton community structure at 18 estuaries of Lake Taihu and assessed their ecological conditions according to index of biotic integrity based on phytoplankton (P-IBI). Samplings were conducted seasonally from May 2018 to March 2019. A total of 119 phytoplankton species belonging to 7 groups and 66 genera were identified. The mean phytoplankton density and biomass was 8.91×106 L-1 and 1.46 mg·L-1, respectively. At seasonal scale, the total density and biomass reached the maximum value in summer (2.35×107 L-1 and 4.06 mg·L-1, respectively), and the minimum values were in winter (3.84×105 L-1and 0.36 mg·L-1, respectively). In terms of morphologic functional groups, Group Ⅲ and Ⅶ had higher biomass in summer (0.18 mg·L-1 and 0.04 mg·L-1, respectively). Phytoplankton density, Chlorophyll a and Menhinick were selected to establish P-IBI. Generally, the ecological condition in main estuaries was "low", and the average P-IBI value was 42.64. Spatially, "low" was the dominated condition (accounting for 55.56% of all sampling sites), followed by "moderate", and 2 sampling sites were classified as "bad". At seasonal scale, the maximum and minimum average P-IBI value was in winter (53.15) and summer (27.59), respectively. The water ecological condition was "low", "low", "moderate", and "moderate" in spring, summer, autumn and winter, respectively. The Spearman correlation analysis show that the P-IBI was significantly and negatively correlated with water temperature, pH and permanganate index (P<0.05), and significantly and positively correlated with nitrate (NO3--N) (P<0.05). There is also a good agreement between P-IBI and the Ⅲ and Ⅶ biomass that characterize harmful algae.
Diversity of Wintering Waterbirds and Priority Conservation Areas in Tianjin
WANG Feng-qin, CHEN Chen, LIU Wei, LIU Ya-zhou, LU Xue-qiang, WEI Wei, GU Yuan, YI Jian-feng
2021, 37(4):  509-517.  doi:10.19741/j.issn.1673-4831.2020.0596
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From 2011 to 2018, waterbirds diversity in 9 survey sites of 4 survey regions in Tianjin (Beidagang, Tanggu coastal area, Dahuangpu and Qilihai) was investigated using line transect and point count surveys during the winter season (November to December). A total of 54 species and 102 946 waterbirds were recorded, belonging to 7 orders, 13 families and 28 genera. Waterbirds of Anseriformes and Charadriiformes were the dominant group both in species and population and comprised 44.44% and 27.78% of the species of the community, respectively. Five of the recorded species were national first-grade protected species, including oriental white stork (Ciconia boyciana), relic gull (Larus relictus), black stork (Ciconia nigra), baers pochard(Aythya baeri) and saunder's gull (Larus saundersi). Ten of the recorded species were national second-grade protected species. Usiing the protected birds as indicator species, the priority conservation areas and ecological restoration areas were identified based on the diversity level of waterbird communities and interference degree of human activities in 9 survey sites. The results show that the sides of Chuqiku, Qilihai and Shangmatai are providing good wintering grounds for waterbirds and are less disturbed by human activities. Although the species diversity of waterbirds and the priority protection index in Beidagang Reservoir are both low, while they are important stations for migratory oriental white stork, whooper swan and other birds under protection with little interference from human activities. The diversity index and priority protection index of Tanggu Gaoshaling are both high, and a large number of rare birds such as relict gulls inhabit there in winter, and it should be a priority area for protection. Tangjiahekou and Duliu River have high diversity and species richness and Tangjiahekou is still the main wintering habitat of the relict gulls. However, it is greatly affected by human activities. The species and number of waterbirds wintering there have been decreasing year by year. In the wetland planning and construction, the artificial habitat in Tianjin coastal wetland is an important supplement to the natural habitat bird resources and plays an important role in the maintenance of the diversity of overwintering waterbirds and the protection of endangered species. As an area with high conservation value, the wetland ecological protection and restoration of the Tanggu tidal area should be strengthened.
Effects of Different Vegetation Types on the Characteristics of Soil Bacterial Communities in the Hilly Area of Central Guizhou
YANG Yun-li, XU Ming, ZOU Xiao, CHEN Jin, ZHANG Jiao, ZHANG Jian
2021, 37(4):  518-525.  doi:10.19741/j.issn.1673-4831.2020.0793
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In order to study the effects of different vegetation types on soil properties and bacterial community structure in the hilly areas of the central Guizhou, three vegetation types, including shrub, coniferous forest and broad-leaved forest were selected for analyzing the physical and chemical properties of the soils. The 16S rRNA gene of soil bacteria was analyzed by high-Throughput sequence. The results show that soil pH in coniferous forest was significantly lower than in shrubland and broad-leaved forest (P<0.05). The total nitrogen content in broad-leaved forest was significantly higher than shrubland and coniferous forest (P<0.05). A total of 5 501 bacterial operational taxonomic units (OTUs) in the soils were detected, and the OTUs are belonging to 42 phyla, 125 classes, 297 orders, 509 families and 1 021 genera. Proteobacteria, Acidobacteria and Actinobacteria were dominant phyla. The abundance of Proteobacteria showed an increasing trend as vegetation succession stages, while the abundance of Actinobacteria showed a opposite trend. Sphingobacillus, unclassified Streptomycetaceae, unclassified Acidobacteriales, Bradyrhizobium and Bryobacter were dominant genus. The abundance of Sphingobacillus showed a gradually increasing trend during vegetation succession stages. The diversity of soil bacterial community was significantly different among different vegetation types (P<0.05), shrubland showed the highest diversity of soil bacterial community. PCoA analysis show that there were differences in the composition and structure of soil bacterial community among different vegetation types. The redundancy analysis show that total phosphorus, available phosphorus and bulk density were the main influencing factors which could affect soil bacterial community structure among different vegetation types (P<0.05).
Characteristics of Airborne Bacteria and Human Pathogenic Bacteria in Different Working Areas of Animal Manure Composting Plant
YANG Zi-ye, ZHANG Zhuo-yi, SUN Xing-bin, GAO Min, WANG Xu-ming
2021, 37(4):  526-533.  doi:10.19741/j.issn.1673-4831.2020.0693
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The air emitted from animal manure composting plants is usually rich in many kinds of bacteria which can include human pathogenic bacteria, and can significantly influence the types and abundance of bacteria that are present in different areas of the composting plant usually not assumed to be affected. In this study, air samples from the composting area, packaging area and office area of an animal manure composting plant were collected. Bacterial diversity and community structure in the air samples from the above three areas were compared, and the regional differences in the relative abundance of human pathogenic bacteria were also analyzed. The results show that the distribution of dominant bacteria in the air of composting area, packing area and office area were almost similar to each other, but there were regional differences in the relative abundance of certain dominant bacteria. Generally, the first three dominant bacterial phylum were Firmicutes, Proteobacteria and Actinobacteria, and the dominant bacterial genera were Acinetobacter and Corynebacterium. Both the highest richness and diversity of airborne bacteria were detected in office area. There were significant differences in the airborne bacterial community in the three regions, and the bacterial community structure in the composting area was more similar to that in the packaging area. The bacterial communities in the air of the three regions were significantly different, and the bacterial phyla communities in the composting area and the packaging area were more similar. The proportion of endemic bacterial genera and phylum in the air of office area was the highest. The results of microbiological analysis show that the proportion of common bacterial phyla and genera in the composting area was the highest, to be 85.19% and 85.14%, respectively. There was no significant difference in the structure of human pathogenic bacteria in the air of different regions, and the relative abundance of Acinetobacter was the highest. The relative abundance of two types of human opportunistic pathogens in the air from office area was significantly positively correlated with the same genus in the composting area and the packing area, while there was no significant correlation between the relative abundance of human opportunistic pathogens in the air of the composting area and the packing area. The results of this study can provide basic data for air health risk assessment in different areas of animal manure composting plants.
Variation Characteristics of Water Quality and Equilibrium Estimation of Nitrogen and Phosphorus in Aquaculture Water Restored by Eichhirnia carssipes
ZHANG Ying-ying, LIU Li-zhu, SONG Wei, WANG Yan, ZHANG Jun-qian, LIU Hai-qin, YAN Shao-hua, GUO Jun-yao, ZHANG Zhi-yong
2021, 37(4):  534-544.  doi:10.19741/j.issn.1673-4831.2020.0550
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In order to study the restoration efficiency of aquaculture wastewater by Eichhirnia carssipes, a field experiment was constructed in three ponds with the area of 0.54 hm2 in Dacheng eco-agricultural territory of Jinting Town, Suzhou City. Three treatments: control, 5% plant coverage and 10 % plant coverage were set up. During the experiment, fish fry was released to the ponds in April and Eichhirnia carssipes was cultivated in the fences in May. From April to November, water samples were collected to monitor the concentrations of total nitrogen (TN), ammonia nitrogen (NH4+-N), nitrate nitrogen (NO3--N), total phosphorus (TP) and suspended solid (SS) every month. The fresh biomass, nitrogen and phosphorus contents of Eichhirnia carssipes were monitored every month. The single weight, nitrogen and phosphorous contents of fish were monitored at fry releasing and fish catching. From July to October, the concentrations of TN, NH4+-N and NO3--N in aquaculture water restored by the plant were significantly lower than that of the blank control. With feeding and fish growth, the concentrations of TP and SS in aquaculture water gradually increased. When Eichhirnia carssipes was harvested in July, the concentrations of TP and SS in in aquaculture water restored by the plant significantly decreased. The total yield, single weight and utilization rate of nitrogen and phosphorus of fish in the two ponds restored by Eichhirnia carssipes were higher than those of the control, which indicates that Eichhirnia carssipes cultivation in aquaculture ponds had no negative effect on fish growth. Feeding was the main way of nitrogen and phosphorus input in aquaculture water. Fish production and sediment deposition were the main ways of phosphorus output in aquaculture water and they accounted higher proportion in total nitrogen output of aquaculture water. The removal amount of nitrogen and phosphorus by Eichhirnia carssipes harvesting accounted for 7.41%~13.78% and 5.81%~9.87% of the total output, respectively. Compared with the control, the concentrations of nitrogen and phosphorus in the water body could be controlled by low coverage of Eichhirnia carssipes. However, there is still a risk of water environmental pollution caused by the direct discharge of the restored aquaculture water. Thus it is very necessary to take deep-purifying measures to treat the drainage of the aquaculture pond.