小流域生态清洁评价分级标准研究

Study on grading standards of ecological cleaning assessment in small watershed

为了建立一套科学易行的小流域生态清洁整体性评价标准,给生态清洁小流域建设提供可靠的技术支撑,本文综合考虑土壤状况、生态系统、水环境、人类社会与经济发展,提出了小流域生态清洁的评价指标和分级标准,并以江西省赣县枧田小流域为例进行应用.评价结果基本符合流域的实际情况,提出的14个关键指标能够反映小流域生态清洁的整体状况,评价方法科学可行,枧田小流域生态清洁指数为7.82,评价分级为"一般",接近"清洁".

In order to establish a scientific and feasible evaluation standard for ecological clean integrity of small watershedwhich can provide reliable technical support for the construction of ecological clean small watershed, soil condition, ecosys-tem, water environment, human society and economic development were taken into account in this paper, the evaluation in-dex and grading standard of ecological sanitation in small watershed were put forward, small watershed in Jiangxi provinceGanxian Jiantian was used as an example. The evaluation results were in line with the actual situation of the river basin, the14 key indicators proposed cound reveal the overall situation of ecological clean in small watershed, the evaluation methodwas scientific and feasible, the ecological cleanliness of Jiantian was 7.82 which rating was classified as ＂general＂ and near＂clean＂.