Loading...

Table of Content

Volume 17 Issue 1
10 February 2001
muci
Advances of Ecological Engineering in China in the Past Decade
YAN Jing-Song, WANG Ru-Song
2001, 17(1):  1-8,20. 
Abstract ( 819 )   PDF (155KB) ( 2496 )  
Related Articles | Metrics
China has witnessed great advances in ecological engineering in the past decade. The objective of the study has expanded to cover the entire social economic and natural complex ecosystem,oriented for sustainable development ,benefit to both human society and nature,harmonized development of the economy and the environment ,and shift from the one dimensional pursuit of economic growth or environment and nature conservation to a three dimensional one of prosperity of a three in one complex ecology comprising wealth(growth and accumulation of both economic and ecological assets),health(physical and intellectual integrity of the people and sound service function and metabolism of the ecosystem)and culture(material,spiritual and ecological civilization). Based on the four consummated rationales of integrity(of time,space and function),harmony(symbiosis and co evolution), recycling (material and information feedback)and spontaneity(competition and self regulation),and eco cybernetics,eight principles for ecological engineering designing have been derived. Its methodology has developed from physical quantification to ecological seriation,from optimization of engineering structure to evolution of ecological patterns,and from mechanical artificial intelligence to human ecological intelligence.Its technical route has been developed to include coupling of hardware,software and mindware,combination of multi disciplinary and multi technological systems ,regulation of the entire ecological course of the compound ecosystem,expression of environment protection in production and consumption and of waste disposal in utilization,and vertical and horizontal coupling of structure with function into food chain network,life cyclenetwork and ecosystem network. Moreover,its application scope has been expanding to a variety of fields.
Effect of Drainage on Soil Chemical Elements in Swamps and Wetlands in the Sanjiang Plain
ZHANG Yun, Lü Xian-Guo
2001, 17(1):  9-12. 
Abstract ( 685 )   PDF (92KB) ( 1893 )  
Related Articles | Metrics
The Sanjiang Swamp and Wetland Ecology Test Station was selected as a research base,where 28 soil samples were taken from 6 typical sampling sites(soils at the beginning and the end of the drainage ditch,swamp soil,and swampy meadow soil)for determination of major ions(HCO3- 、Cl- 、NO3- 、SO4 2 - 、Ca 2+ 、Mg 2+ 、K+ 、Na+),heavy metals(Fe,Mn,Zn,Cu),nutrient elements and their availability,soil organic matter,and soil pH. On such a basis ,effect of drainage on content of chemical elements in the swamp soil was studied. Results show that drainage makes the swamp soil lose a large quantity of chemical elements.
Financial Policies for Nature Reserves in China
XU Hai-Gen
2001, 17(1):  13-16. 
Abstract ( 590 )   PDF (69KB) ( 1988 )  
Related Articles | Metrics
The status quo of the investment in and revenue of the nature reserves in China and related problems were reviewed on the basis of the data gathered through surveying literatures and issuing questionnaires. The investment in the nature reserves is far from enough to meet their demand while their capability of creating revenue is rather limited.Therefore,increasing investment from the central and local governments is the fundamental measure to solve the problem of fund shortage. It is recommended that the national government to establish special funds and open up new financial channels to support construction and management of the nature reserves. Meanwhile,to promote businesses in the reserves,to perfect and implement the policy of ecological environmental compensation fees,to work out favorable tax policies and intensify supervision and management of the finance of the nature reserves are also strongly suggested.
Environmental Problems of Wetland Resources and Their Countermeasures in Xianghai Nature Reserve
BAI Jun-Hong, YU Guo-Ying
2001, 17(1):  17-20. 
Abstract ( 696 )   PDF (85KB) ( 1783 )  
Related Articles | Metrics
Proceeding from the angle of sustainable development,the status quo and existing major problems of the wetland resources in Xianghai Nature Reserve were analyzed. Results show that the wetland resources are decreasing in acreage,weakening in eco function,and reducing in biodiversity as a result of their unreasonable utilization and management by people. On such a basis,strategies and countermeasures were brought forward for protection and sustainable exploitation of the wetland resources.
Biological Behaviors and Conservation of Handeliodendron Bodinieri
HUANG Shi-Xun, LUO Wen-Hua
2001, 17(1):  21-23,36. 
Abstract ( 923 )   PDF (80KB) ( 1760 )  
Related Articles | Metrics
Handeliodendron bodinieri, an epibiotic species of plant unique to China,is distributed only in the limestone region along the junction of Guangxi Province and Guizhou Province.Because of destructive human activities, its peculiar habitat and its own characteristics,this species is getting rare and endangered,and hence listed as one of the key plant species under the state protection. To explore causes and solution to the problem,its ecological and biological characteristics are studies.
Sustainability of Amomum Villosom Ecosystem
GAO Lei, LIU Hong-Mao, CUI Jing-Yun, DUAN Qi-Wu
2001, 17(1):  24-28. 
Abstract ( 708 )   PDF (115KB) ( 1581 )  
Related Articles | Metrics
By applying theories of environmental economics,a case study of the Amomum villosom cultivation in Manme Village was conducted to analyze sustainability of the Amomum villosom ecosystem in tropical forest in the aspect of economy,environment and ecology. It was discovered after Amomum villosom trees were planted that the scaling up rate of their economic benefit was much lower than that of their cost in terms of resource environment. The destruction of the eco environment induced by Amomum villosom cultivation significantly affected the yield of amomum fruit,thus stagnating their economic benefit. The alteration from extensive production to intensive one by adopting a certain rotation system may well help Amomum villosom production develop sustainably. 
Landscape Ecology and Its Application in Agricultural Landscape Ecology Planning
ZHANG Hui, MIAO Xu-Bo, SUN Qin-Fang
2001, 17(1):  29-32. 
Abstract ( 691 )   PDF (80KB) ( 1938 )  
Related Articles | Metrics
The development of the landscape ecology provides the landscape ecology planning with some promising theories,methods and technical means. Beginning with the basic principles of landscape ecology,its application to agricultural landscape ecology planning has been elaborated. It is held that the planning of agricultural landscape should not only consider“land use”,“land fertility”and man’s short term needs on landscape,but also focus on the aesthetic and ecological values and man’s long term needs. The ultimate goal of the planning of agricultural landscape ecology is to create an integrated regional ecosystem that may enjoy sustainable development. For further analysis,Baoying County in the north of Jiangsu Province is taken for case study.
Problems in Utilization of Cultivated Land Resources in Jiangsu Province and Measures for Their Sustainable Utilization
ZHU Xiao-Hua, GENG Guo-Liang
2001, 17(1):  33-36. 
Abstract ( 578 )   PDF (71KB) ( 1449 )  
Related Articles | Metrics
Based on the data from the“Jiangsu Province Statistics Yearbook 1999”and other sources,problems in the utilization of the cultivated land resources of Jiangsu were analyzed and summed up,and the countermeasures aimed at sustainable utilization of the resources were brought forward for further discussion.
Effect of Organic Substances on Plant Growth in Copper Contaminated Soils
CHEN Shi-Jian
2001, 17(1):  37-39. 
Abstract ( 607 )   PDF (70KB) ( 1597 )  
Related Articles | Metrics
A pot experiment on effect of peat and compost on copper absorption of ryegrass growing in copper contaminated soils was conducted. Results of the experiment showed no matter whether the organic substance was applied or not, the copper content in either the aerial or the ground part increased with the contamination level,with that in the latter doing much more significantly than in the former.The copper contents in the aerial and ground parts of the ryegrass were significantly,on average about 30%,lower in treatment peat and treatment compost.The effect of peat on reducing copper contents in both parts of the ryegrass decreased with the rise in copper contamination level,whereas the effect of compost remained significant even at the highest contamination level,and peaked at the contaminatio n level of 400 mg/kg.The effects of the two organic substances were closely associated with soil pH,and lasted throughout three crops of ryegrass. 
Absorption and Enrichment of 147 Pm in Aquatic Vegetables
CHEN Zu-Yi, ZHANG Li-Gan
2001, 17(1):  40-43. 
Abstract ( 764 )   PDF (93KB) ( 1569 )  
Related Articles | Metrics
Studies were carried out with radionuclide tracer on absorption,distribution and absorption coefficient of rare earth Promethium( 147 Pm) in three species of aquatic vegetables(arrowhead,water chestnut and water dropwort).The results showed that they displayed a high capacity of absorbing and enriching 147 Pm. In the case of water dropwort, the absorption of 147 Pm increased with the growing time. In 50,80 and 110 days,the absorption coefficient of the entire sample was 0.98±0.19,0.92±0.38 and 1.14±0.18,respectively. The edible parts of the vegetables(stems of water dropwort and corms of arrowhead and water chestnut)showed enrichment of 147 Pm with the absorption coefficient, being 1.29±0.28,2.09±0.03 and 1.55±0.55,respectively.
Effect of Emission Control on Water Quality of the Taihu Lake
ZHANG Wei, WANG Xue-Jun, JIANG Yao-Ci, ZHOU Xiu-Wei
2001, 17(1):  44-47. 
Abstract ( 691 )   PDF (131KB) ( 1619 )  
Related Articles | Metrics
Based on field observations in November 1998 and October 1999,comparisons were made between them in quality and spatial distribution of principal pollutants(such as DO,COD Mn ,TP,TN and Chla)in the waters at various sampling sites. It is revealed that there is no significant improvement in water quality after the emission control. Non?point source pollution and release of nutrients from the sediment are probably the two major causes of the hysteresis.
Application of Microbial Technology to the Improvement of Water Quality in Aquiculture —Turtle Cultivation
REN Ao, SHI Jia-Liang
2001, 17(1):  48-51. 
Abstract ( 641 )   PDF (85KB) ( 1634 )  
Related Articles | Metrics
The deterioration of water quality is a common but troublesome problem in turtle cultivation. Beneficial micro organisms like PSB,NB and YULEI were used in turtle cultivation with sand bed in greenhouse. The results show that those micro-organisms could efficiently decompose pollutants in the pond sediment,and eliminate organic substances,COD,NH 3-N and NO3 - -N from the waterbody,thus reducing aquicultural and environmental risks,and water consumption as well due to their water purifying effect.
History and Perspective of Development of Rural Landscape Planning in China
LIU Li-Ming
2001, 17(1):  52-55. 
Abstract ( 757 )   PDF (80KB) ( 3406 )  
Related Articles | Metrics
Contents and characteristics of the development of rural landscape planning were discussed after a brief review of its history. The development trend of the basic research on and the application of rural landscape planning in China were described. It is pointed out that the focus of the research in the years to come ought to be on exploration of how to further systematically consummate the theory and methodology in this field as well as on case studies and practical application of the research findings in some key regions.
Effect of Mycorrhiza on Bioremediation of Polluted Soil
WANG Shu-Guang, LIN Xian-Gui
2001, 17(1):  56-59. 
Abstract ( 760 )   PDF (107KB) ( 2365 )  
Related Articles | Metrics
Mycorrhiza,existing extensively in nature,are symbiotic associations of plant roots with certain soil fungi. They can improve the host plant in nutrient uptake and growth,and hence its endurance and resistance to environmental stress. Therefore, mycorrhiza accreted plants can be used as a suitable bioremediation carrier. A review is made of studies,at home and abroad,on role of mycorrhiza in bioremediating soils polluted by non organic,organic and radioactive contaminants. 
Problems in Construction of Suburban Agro?Ecological Environment
YE Dai-Fu
2001, 17(1):  60-63. 
Abstract ( 589 )   PDF (78KB) ( 1551 )  
Related Articles | Metrics
Based on the regional study of composition and structure of suburban environment and characteristics of suburban eco environment, with the theory of edge effect as its starting point,profound analysis was made of problems in construction of eco environment in regions interlacing city and countryside. It was held that construction of suburban ecology should be oriented towards: (1)a site for regeneration of urban wastes;(2)a place for consumption,like ecological tourism and agricultural culture;and (3)a pioneer region of modern sustainable agriculture. The aggregating and enlarging effect of the city countryside interlacing regions(marginal interface)on environmental stress in the urban and rural compound ecosystem was analyzed. It has been pointed out that the regulating of suburban agro ecological environment is an essential measure of preventing the conflict between city and the countryside from aggravating.