干旱区生态环境知识资源中心(Arid): 澜沧江流域生态系统土壤保持功能及其空间分布

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	澜沧江流域生态系统土壤保持功能及其空间分布
其他题名	Ecosystems soil conservation function and its spatial distribution in Lancang River Basin,Southwest China
	陈龙 1; 谢高地 1; 裴厦 1; 张昌顺 1; 范娜 1; 张彩霞 1; 李士美 2
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2012
卷号	23 期号:8 页码:2249-2256
中文摘要	基于改进的通用土壤流失方程对澜沧江流域生态系统的土壤保持功能及其空间分布特征进行分析.结果表明:澜沧江流域是我国生态系统土壤保持能力最高的区域之一,其年均土壤保持量为2.3610~(10)t.a~(-1),单位面积土壤保持量为1453.72t.hm~(-2);土壤N、P、K元素保持量分别为5.7410~7、3.0710~7和3.7510~8t.a~(-1),从上游至下游呈递增趋势.各类生态系统中,森林生态系统土壤保持能力最高,草地和农田其次,荒漠生态系统最差.不同生态系统的土壤保持能力均随植被盖度的增加呈线性增长.澜沧江流域生态系统的植被盖度每增加10%,其土壤保持能力平均增加35.3%.在对该区域生态系统进行保护的基础上,因地制宜地合理增加植被盖度对防治土壤侵蚀、保持土壤养分可以起到良好效果.
英文摘要	Based on the RUSLE model,this paper analyzed the ecosystems soil conservation function and its spatial distribution in Lancang River Basin.This Basin could be one of the regions having the highest ecosystems soil conservation capability in China,with an annual ecosystems soil conservation amount being 2.3610~(10) t·a~(-1) and the soil conservation amount per unit area being 1453.72 t·a~(-1) per hectare.The total amounts of the N,P,and K conserved in soils were 5.7410~7,3.0710~7,and 3.7510~8 t·a~(-1),respectively,and presented an increasing trend from upstream to downstream.Among the ecosystems in the Basin,forest ecosystem had the highest soil conservation capability,followed by grassland and farmland,while desert ecosystem had the lowest one.The soil conservation capability of the ecosystems was linearly increased with the increase of vegetation coverage.Averagely,a 10% increment in the vegetation coverage could result in a 35.3% increment in soil conservation capability.To rationally increase the vegetation coverage by reliable ecosystem management based on local conditions would make good effect in preventing soil erosion and maintaining soil nutrients in the Basin.
中文关键词	澜沧江流域 ; 生态系统服务 ; 土壤侵蚀 ; 土壤保持
英文关键词	Lancang River Basin ecosystem services soil erosion soil conservation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ECOLOGY
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4595820
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228832
作者单位	1.中国科学院地理科学与资源研究所, 北京 100101, 中国; 2.青岛农业大学, 青岛, 山东 266109, 中国
推荐引用方式 GB/T 7714	陈龙,谢高地,裴厦,等. 澜沧江流域生态系统土壤保持功能及其空间分布[J]. 中国科学院地理科学与资源研究所,2012,23(8):2249-2256.
APA	陈龙.,谢高地.,裴厦.,张昌顺.,范娜.,...&李士美.(2012).澜沧江流域生态系统土壤保持功能及其空间分布.应用生态学报,23(8),2249-2256.
MLA	陈龙,et al."澜沧江流域生态系统土壤保持功能及其空间分布".应用生态学报 23.8(2012):2249-2256.