摘要
为遏制水丰湖水质恶化,并从源头上有效控制流域污染,通过对水丰湖流域污染负荷的调查研究及生态安全评估,旨在探寻入湖污染物的来源、组成及分布规律,为流域水环境治理提供理论依据。结果表明,流域COD、TN、TP等污染负荷的排放中,养殖、农田等面源的贡献量远大于工业等点源,且污染负荷的入湖量具有明显的季节性;应用"驱动力-压力-状态-影响-响应"(DPSIR)模型评估分析,水丰湖流域生态状况处于安全区间,但是水质恶化的趋势使得污染物的控制工作亟待开展。综上,水丰湖流域的生态环境保护项目应着重从入湖河流的水质改善、畜禽养殖废弃物的综合治理、农田污染的合理控制等方面开展和强化。
To suppress the deterioration of the water quality of Shuifeng Lake and control the pollution effectively from the source, this study carried on an investigation of the pollution load distribution and the evaluation of the ecological security of the basin, aiming to provide theoretical evidence for the water environmental management through the analysis of the source, components and distribution of the pollutants into the lake. The results showed that： non-point source including livestock and poultry breeding and planting contributed much more than industrial point source in the discharge of COD, TN and TP; and the amount of pollutants into the Shuifeng Lake exhibited obviously seasonal characteristic; the ecological security index of the Shuifeng Lake was evaluated to be in the safe zone based on the eco-security assessment with the model of ＂drive-pressure-state-impact-response＂ （DPSIR）, however, pollution control was in urgent need due to the water quality deterioration. Therefore, the study put forward that pollution control measures should be emphatically launched from the inflowing rivers, livestock and poultry breeding, and crop planting based on the actual situation.
作者
李红娜
张翰林
董殿波
耿兵
吕卫光
朱昌雄
Li Hongna Zhang Hanlin Dong Dianbo Geng Bing Lv Weiguang Zhu Changxiong(Agricultural Clear Watershed Group, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081 Eco-environmental Protection Institute of Shanghai Academy of Agricultural Science, Shanghai 201403 Liaoning Research Academy of Environmental Sciences, Shenyang 110160)
出处
《中国农学通报》
2017年第8期104-111,共8页
Chinese Agricultural Science Bulletin
基金
国家自然科学基金(51308537)
江河湖泊生态环境环保护专项"水丰湖生态安全调查与评估"(2015110001002940)
关键词
调查
水丰湖流域
污染负荷
生态安全评估
investigation
Shuifeng Lake basin
pollution load
eco-security assessment
