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~(137)Cs示踪法研究青藏高原草甸土的土壤侵蚀
Alternative Title~(137)Cs Trace Technique to Study Soil Erosion at Alpine Meadow of Tibetan Plateau
李元寿1,2; 王根绪2; 王军德3; 王一博3; 吴青柏1
Corresponding Author李元寿
2007
Source Publication山地学报
ISSN1008-2786
Volume25Issue:1Pages:114-121
Abstract

运用~(137)Cs示踪法对青藏高原高寒草甸典型的两个小流域的土壤侵蚀进行了研究,结果表明:高寒草甸植被区的土壤~(137)Cs在土壤剖面中呈指数型分布,分布深度一般在20 cm左右;坡顶部由于风蚀、冻融侵蚀和水蚀较强,致使侵蚀强于下部,除坡顶部外其他坡位侵蚀强度都符合坡上部<坡中部<坡下部的规律;高寒草甸植被覆盖度与土壤侵蚀强度呈显著的负相关关系(p<0.01),土壤平均侵蚀模数随植被覆盖度的增加呈线性降低的趋势,相关系数R~2达到0.997以上.高寒草甸退化程度越高,土壤侵蚀越强.退化较强的草甸区的平均侵蚀模数是退化较弱区的2.23倍,最大侵蚀模数可达2 960.22 t/(km~2·a).

Other Abstract

~(137)Cs tracing technique to studied the soil erosion of two basins at alpine meadow of Tibetan Plateau. The results showed: ~(137)Cs in soil profile is exponential distributing at alpine meadow. Depth of about 20 cm in general distribution of ~(137)Cs. Slope top because wind erosion, water erosion and frozen-thaw erosion is stronger than the bottom of slope. Intensity of erosion is consistent with other slope spaces erosion intensity law of others slope position all accorded with upper < middle < down. Alpine meadow cover and soil erosion is a degree of significant negative correlation. With an average of soil erosion module is a linear increase in vegetation cover degrees lower trend, that correlation coefficients is R~2 = 0.997. Alpine meadow higher degree of degradation is soil erosion more powerful. The maximal soil erosion module is 2960.22 t/(km~2·a). Degradation serious meadow areas average erosion module is 2.23 times the degradation of the weaker areas.

Keyword~(137)Cs示踪技术 土壤侵蚀 高寒草甸 青藏高原
Subject AreaS157
DOI10.16089/j.cnki.1008-2786.2007.01.013
Indexed ByCSCD ; 北大中文核心
Language中文
CSCD IDCSCD:2794297
Funding Organization国家自然科学基金项目(30270255) ; 中国科学院知识创新重大工程(K2CX1-SW-04) ; 中国科学院“百人计划”2004山地所项目 ; 中国科学院寒区旱压环境与工程研究所冻土工程国家重点实验室2005年开放基金项目(SKLFSE200501)
Citation statistics
Cited Times:20[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18469
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation1.中国科学院寒区旱区环境与工程研究所寒旱区流域水文及应用生态实验室冻土工程国家重点实验室
2.中国科学院水利部成都山地灾害与环境研究所
3.兰州大学资源与环境学院
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
李元寿,王根绪,王军德,等. ~(137)Cs示踪法研究青藏高原草甸土的土壤侵蚀[J]. 山地学报,2007,25(1):114-121.
APA 李元寿,王根绪,王军德,王一博,&吴青柏.(2007).~(137)Cs示踪法研究青藏高原草甸土的土壤侵蚀.山地学报,25(1),114-121.
MLA 李元寿,et al."~(137)Cs示踪法研究青藏高原草甸土的土壤侵蚀".山地学报 25.1(2007):114-121.
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