首页|期刊导航|中国海洋湖沼学报（英文版）|Water quality, nutrient budget, and pollutant loads in Chinese mitten crab (Eriocheir sinensis) farms around East Taihu Lake
中国海洋湖沼学报（英文版）2012，Vol.30Issue(1)：29-36,8.DOI:10.1007/s00343-012-1034-x
Water quality, nutrient budget, and pollutant loads in Chinese mitten crab (Eriocheir sinensis) farms around East Taihu Lake
Water quality, nutrient budget, and pollutant loads in Chinese mitten crab (Eriocheir sinensis) farms around East Taihu Lake
摘要
Abstract
To understand the factors causing frequent outbreaks of harmful algae blooms in the Taihu Lake,China,we studied water quality and nutrient budget in Chinese mitten crab (Eriocheir sinensis) farm ponds in the eastern part of the lake from November 2007 to December 2009.We estimated the nitrogen (N),phosphorus (P),and chemical oxygen demand (COD) loads.Materials input and output ponds,water exchange,and applied management practices of 838.5-hm2 crab ponds were surveyed using questionnaires.Water quality of 12 ponds,which were located no more than 2 km from East Taihu Lake,were monitored.The results show that water quality in the crab ponds was better than reference data.Feeds,including corn seed,commercial feed,trash fish,and gastropod,were the major sources of N and P input in the crab ponds,contributing 88.7％ and 94.9％,respectively.In total,60.5％ of N and 37.3％ of P were sequestered by macrophytes,and only 15.7％ and 8.5％ of them were discharged as effluent.The net loads of N and P in effluent were 16.43 kg/hm2/cycle and 2.16 kg/hm2/cycle,respectively,while the COD load was -17.88 kg/hm2/cycle.This indicated that crab farming caused minor negative impact on the trophic status of the lake area,which was attenuated by macrophytes.However,wastewater purification is still necessary in crab faming.关键词
Chinese mitten crab (Eriocheir sinensis)/water quality/mass budget/pollutant load/Taihu LakeKey words
Chinese mitten crab (Eriocheir sinensis)/water quality/mass budget/pollutant load/Taihu Lake引用本文复制引用
CAI Chunfang,GU Xiaohong,HUANG Hezhong,DAI Xiuying,YE Yuantu,SHI Chenjiang..Water quality, nutrient budget, and pollutant loads in Chinese mitten crab (Eriocheir sinensis) farms around East Taihu Lake[J].中国海洋湖沼学报（英文版）,2012,30(1):29-36,8.基金项目
Supported by the Major Projects on Control and Rectification of Water Body Pollution (No.2008ZX07101-012),the Knowledge Innovation Program of the Chinese Academy of Sciences (No.KZCX1-YW14),the Aquaculture "three projects" of Jiangsu (No.J2009-12),and the Agricultural Basic Research Fund of Suzhou (No.YJG0912) （No.2008ZX07101-012）
