应用生态学报2012，Vol.23Issue(6)：1671-1676,6.
离岸消浪堰式湖滨带生态修复工程对水质的影响
Effects of riparian ecological restoration engineering with offshore wave-elimination weir on restoration area' s water quality
摘要
Abstract
Riparian ecological restoration engineering with offshore wave-elimination weir is an engineering measure with piled wave-elimination weir some meters away from the shore. This measure can dissipate waves, promote sediment deposition, and create an artificial semi-closed bay to restore vegetation in a riparian area which has hard dam and destroyed vegetation. Three habitat gradient zones, i. e. , emerged vegetation zone, submerged vegetation zone, and open water area, can be formed after this engineering. In June 2010-May 2011, a field investigation was conducted on the water quality in the three zones in an ecological restoration area of Gonghu Bay, Taihu Lake. The water body inside the weir generally had lower concentrations of nitrite and nitrate but higher concentrations of ammonium and total nitrogen than the water body outside the weir. The water phosphorus concentration inside the weir was lower than that outside the weir in autumn and winter, while an opposite trend was observed in spring and summer. The coefficients of variation of the water body' s nitrite and orthophosphate concentration inside the weir decreased, and the annual maximum values of the water nitrite, nitrate, and orthophosphate concentrations inside the weir were lower than those outside the weir. On the contrary, the coefficients of variation of the water body' s ammonium and total nitrogen concentrations inside the weir increased, and the annual maximum values of the water ammonium and total nitrogen concentrations inside the weir were higher than those outside the weir. To some extent, the restoration engineering could exacerbate the deterioration of the water quality indices such as ammonium and total nitrogen in the restoration area by the end of growth season.关键词
消浪堰/湖滨带/生态修复/水质稳定性/人工湖湾/太湖Key words
wave-elimination weir/ riparian area/ ecological restoration/ stability of water quality/artificial lake bay/ Taihu Lake分类
资源环境引用本文复制引用
汤浩,张卉,谢斐,徐驰,王磊,刘茂松..离岸消浪堰式湖滨带生态修复工程对水质的影响[J].应用生态学报,2012,23(6):1671-1676,6.基金项目
国家林业局林业公益性行业科研专项(200904001)和国家自然科学基金项目(30870433,40801068)资助. （200904001）
