生态环境学报Issue(8)：1311-1319,9.
水葫芦生态净化工程对竺山湖底栖动物群落结构变化的影响
Effects of Ecological Purification Engineering of Planting Water Hyacinth on Macro-Benthos Community Structure
摘要
Abstract
It is one of the effective ecological measures of management of purifying the polluted water body by using the floating plants, which has the wide adaptability, large biomass, strong purification ability, especially the eutrophication water, after solving the mechanized harvesting, recycling use of terminal processing. The conventional ecological engineering practice is mainly in small water body or inland rivers, which has the obvious purification effects for no wind disturbance. But controlled planting the aquatic plants in large water body to purify the polluted water is still rare now. According to the instruction and requirements of Jiangsu Province, the ecological effects of planting 67 hectares water hyacinth (E. crassipens) in Zhushan Bay, Lake Taihu, which is one of the polluted lake water purification measures in Jiangsu Province and mainly planted by Jiangsu Academic Agricultural Science, on macro-benthos population and structure and benthos environment, were studied during 4~11 month in 2011 with consecutive surveys. Results indicated that average density mollusca (the main species were Bellamya aeruginosa) in far-planting, near-planting and planting area was 15.13、15.63、22.63 ind·m-2,respectively, and biomass was 17.00、17.60、25.50 g·m-2,respectively, showed that benthos biomass in planting area was higher than that the others. However, the average density and biomass of Oligochaeta (the main species were Limodrilus hoffmeisteri) and Chironomidae in planting area were lower than that outside of planting area, and it demonstrated that the benthic environment gradually improved after controlled planting the floating plants. It indicated that the ecological engineering management through planting water hyacinth couldn’t show the obvious purification effects of polluted water in a short time, especially in a shallow, wind disturbance of large lake, and it need long-term, lasting approached to reach the purifying goals. The index of Shannon-Weaver and Simpson indicated that water environment was severe polluted state. On the basis of the survey results, the large-area and high-density planting water hyacinth haven’t demonstrate adverse impact on macro-benthos and benthos environment in short planting time.关键词
生态净化工程/水葫芦/底栖生物/群落结构/生物量Key words
ecological purification engineering/water hyacinth/Macro-Benthos/community structure/biomass分类
资源环境引用本文复制引用
刘国锋,韩士群,何俊,严少华,周庆..水葫芦生态净化工程对竺山湖底栖动物群落结构变化的影响[J].生态环境学报,2014,(8):1311-1319,9.基金项目
国家自然科学青年基金项目（41101525）；江苏省自主创新资金（CX(12)5057）；国家重大科技专项巢湖水专项(2012ZX07103-005) （12）
