Journal of Ecology and Rural Environment ›› 2021, Vol. 37 ›› Issue (10): 1264-1270.doi: 10.19741/j.issn.1673-4831.2021.0222

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Determination of the Benthic Biodiversity Protection Targets in Xiamen Sea Area

FU Shi-feng, WU Hai-yan, CAI Xiao-qiong   

  1. Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
  • Received:2021-04-12 Online:2021-10-25 Published:2021-10-27

Abstract: Taking Xiamen Sea area as research area, this study designed a quantitative sea area utilization intensity index based on 14 sea use activities of 5 sea use types, including land reclamation, tourism and recreation, port and shipping, fishery and industry. According to the sea area utilization intensity and benthic biodiversity data from 1980 to 2016, the relationship model between sea area utilization intensity index and benthic biodiversity was established to predict the benthic biodiversity protection targets under different scenarios. The results show that the sea area utilization intensity index was significantly negatively correlated with most of the benthic biodiversity indices, which indicate that the designed index is reliable. Among the benthic biodiversity indices, the Shannon diversity index H' was found a significant relationship model with the sea area utilization intensity index by using multiple regression analysis, and was mainly affected by reclamation, fishing, and industrial and domestic sewage discharge. Under the "trend scenario", "planning scenario" and "optimal scenario", the average benthic H' in Xiamen Sea area in 2035 will be 2.88, 3.14 and 3.06, respectively. In 2035, the biodiversity conservation target in Xiamen Sea area should be set as the benthic H' not less than 3.06, and biodiversity conservation and ecological restoration should be strengthened in the Western Sea area and the Jiulong River estuary.

Key words: benthos, Xiamen Sea area, biodiversity, sea area utilization intensity, protection target

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