Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1023/A:1013908629150 |
Calculation and mapping of critical loads for S, N and acidity in China | |
Duan, L; Xie, SD; Zhou, ZP; Ye, XM; Hao, JM | |
通讯作者 | Hao, JM |
会议名称 | 6th International Conference on Acidic Deposition |
会议日期 | DEC 10-16, 2000 |
会议地点 | TSUKUBA, JAPAN |
英文摘要 | Critical loads of nutrient and acidifying nitrogen, as well as of sulphur and acidity, were derived for various ecosystems in China using the steady state mass balance (SSMB) equations. The weathering rates of major soils necessary for applying SSMB were calculated through the PROFILE model on the basis of mineralogical data from experimental analysis. The growth uptakes of nitrogen and base cations were also derived by multiplying the annual increases in biomass with the element contents of the vegetation. Using a geographical information system (GIS), 1 degrees (latitude)x1 degrees (longitude) critical load maps of China with different percentiles were compiled. Results indicate that low critical loads of S (< 0.5 keq(.)ha(-1.)a(-1)) occurred predominately in southwest and northeast China, and the critical loads of southeast China were intermediate and in the range of 0.5 similar to1.0 keq(.)ha(-1.)a(-1). In addition, the critical loads of N were very low for desert ecosystems in northwest China and high for agricultural ecosystems in east China. Among the ecosystems with intermediate critical load of N, coniferous forests may be more sensitive to N deposition than broad-leaf forests and temperate steppes. |
英文关键词 | acid deposition critical loads nitrogen SSMB sulphur |
来源出版物 | WATER AIR AND SOIL POLLUTION |
ISSN | 0049-6979 |
出版年 | 2001 |
卷号 | 130 |
期号 | 1-4 |
页码 | 1199-1204 |
出版者 | KLUWER ACADEMIC PUBL |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | CPCI-S ; SCI-E |
WOS记录号 | WOS:000172012000048 |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Water Resources |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/293629 |
作者单位 | (1)Tsing Hua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China;(2)Peking Univ, Ctr Environm Sci, Beijing 100871, Peoples R China |
推荐引用方式 GB/T 7714 | Duan, L,Xie, SD,Zhou, ZP,et al. Calculation and mapping of critical loads for S, N and acidity in China[C]:KLUWER ACADEMIC PUBL,2001:1199-1204. |
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