确定不同保证率下的中国酸沉降临界负荷  

Calculating Critical Loads of Acid Deposition with Different Percentiles in China

作　　者：段雷[1] 郝吉明[1] 周中平[1] 谢绍东[2] 

机构地区：[1]清华大学环境科学与工程系,北京100084 [2]北京大学环境科学中心,北京100871

出　　处：《环境科学》2002年第5期25-28,共4页Environmental Science

基　　金：国家自然科学基金项目 (5 0 0 780 2 7)

摘　　要：在进行中国酸沉降临界负荷区划时 ,通常以 1°× 1°(经纬度 )的网格为单位进行计算 ,难以反映网格内不同生态系统对酸沉降敏感性的差异 .为了便于决策者根据临界负荷确定酸沉降控制对策 ,也为了使 1°× 1°的结果更具代表性和实用性 ,本研究确定了 0 1°× 0 1°网格为单位计算的中国酸沉降临界负荷 ,并在此基础上通过引入保证率的概念 ,得到了一系列与一定的经济技术水平相适应的、允许有一定损失的 1°× 1°的中国酸沉降临界负荷图 .利用累积分布函数 ,本研究还确定了不同保证率下的中国酸沉降超临界负荷分布和各省、市、自治区的酸沉降临界负荷 .While mapping critical loads of acid deposition in China, the 1°(latitude)×1°(longitude) resolution was always adopted in critical load calculation. However, the results of mapping can not show the difference of sensitivity of ecosystems to acid deposition within a 1°×1° grid. For the convenience of policy makers to formulate acid deposition control strategies based on critical loads, and to improve the representation and practicability of 1°×1° results, a series of critical load maps with different percentiles were compiled, which may be accordance with a given economic or technological level, and allows some degree of damage. Based on the cumulative distribution function, the critical load exceedance maps with different percentiles and the maximum allowable deposition of each province was also derived.

关 键 词：保证率 中国 酸沉降 临界负荷 

分 类 号：X517[环境科学与工程—环境工程]