生态系统对酸沉降敏感性评价方法与进展  

Methodology for Assessing the Sensitivity of Ecosystems to Acidic Deposition and Its Progress

作　　者：陈定茂[1,2] 谢绍东[1,2] 胡泳涛 

机构地区：[1]中国科学院生态环境研究中心 [2]北京大学环境科学中心

出　　处：《环境科学》1998年第5期92-96,共5页Environmental Science

摘　　要：评述水体、土壤和整个生态系统对酸沉降敏感性评价的各种方法，这些方法用系统的不同物理化学性质表征它们缓冲酸输入的能力．通过分析比较指出，基于表征水体、土壤缓冲酸输入能力的某些化学指标建立的方法，实质是对生态系统中某一部分的绝对敏感性评价；基于潜在指示生态系统响应酸沉降的诸多生态环境因子开发的相对敏感性评价方法，企图表征整个生态系统缓冲酸输入的能力，其敏感性区划结果可用于酸沉降控制决策．Different methods for assessing the sensitivity of water,soil and whole ecosystem to acidic depositions are summarized.These methods indicate the acidic input buffering ability of these systems with different physicochemical characteristics.By comparing and analyzing,it is pointed out that the methods which are developed with some chemical indicators expressing the acidic input,buffering ability of water and soil are essentially the kinds of absolute assessment to some parts of ecosystem.The relative sensitivity assessing method attempts to indicate the buffering ability of whole ecosystem to acidic depositions,which is developed based on those environmental site factors that indicate potential ecosystem response to those depositions,and the derived sensitivity maps can be used to make a decision on acidic deposition control.

关 键 词：酸沉降 生态系统 敏感性评价 生态评价 

分 类 号：X826[环境科学与工程—环境工程]