滇池流域磷循环系统的物质流分析

研究营养元素在社会经济系统中的物质代谢结构及特征,是有效预防和控制地表水体富营养化的关键性分析技术之一.以滇池流域磷循环为研究案例,运用物质流分析方法建立了2000年流域静态物质流模型(PHOSFAD),并在此基础上识别出流域磷循环系统的总体结构特征,以及资源开采、化工生产、农业种植、畜禽养殖、居民生活等生产和消费部门的物质利用效率特征,为科学防治滇池水体富营养化提供了重要决策依据和参考.

Substance Flow Analysis on Phosphorus Cycle in Dianchi Basin,China

Investigation of physical profiles of nutrients within socio-economic systems is one of the key approaches to cure eutrophication.Applying a substance flow analysis(SFA) method for the case of Dianchi basin located in southwest of China,we established a regional static SFA model(PHOSFAD) in 2000 via balancing societal phosphorus flows.Aggregate characteristics of the overall phosphorus throughput,and physical efficiencies in relation to phosphorus uses of production and consumption sectors,including mining,processing,farming, livestock husbandry and household consumption,were subsequently identified.The methodology and results of this study illustrate applicability and value for rational decision-making aiming to curb eutrophication of Dianchi Lake.