研究论文
谢绍东,郝吉明,周中平.柳州地区各种红壤土种的酸沉降临界负荷研究[J].环境科学学报,1999,19(6):657-661
柳州地区各种红壤土种的酸沉降临界负荷研究
- Assessmentof criticalload for acid deposition to all kinds of red earth in Liuzhou area, China
- 基金项目:国家自然科学基金(编号:59678016)
- 郝吉明
- 清华大学环境科学与工程系,环境模拟与污染控制国家重点联合实验室,北京 100084
- 周中平
- 清华大学环境科学与工程系,环境模拟与污染控制国家重点联合实验室,北京 100084
- 摘要:应用简单质量平衡法(SMB)、多层模型PROFILE和基于植物响应标准计算柳州红壤各土种的酸沉降临界负荷,并建立了系统完整地收集、测量与估算模型所需参数的方法。结果表明,柳州红壤各土种的硫沉降临界负荷为0.50-1.80keq·hm-2·a-1,为保护95%的土壤不受酸沉降危害,柳州土壤的潜在酸度、酸度和硫沉降临界负荷分别为1.8keq·hm-2·a-1、1.9keq·hm-2·a-1<
- Abstract:The critical loads of aciddeposition for all kinds of redearthin Liuzhouarea of China werecal culated bythesimple massbalance method(SMB) and multilayer model(PROFILE). Basedonthecrite ria of plantresponse, acomplete and systemati capproach was established to collect, measureandestimate the parametersrequired bythe model.There sults shows that the critical loads of sulfur depositionforvarious kinds of redearthinthisarea were withintherangeof 0.50 -1.80keq·hm-2·a-1, and the 5th percentilecriticalloadsofacidity, potentialacidity, sulfur deposition and nitrogen depositionforred earth are 1.8 keq·hm-2·a-1, 1.9keq·hm-2·a-1, 0.70 keq·hm-2·a-1 and 1.5keq·hm-2·a-1, respectively.
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