中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
~(137)Cs法测算黄土高原土壤侵蚀速率的初步研究

文献类型:期刊论文

作者张信宝
刊名地球化学
出版日期1991
期号3页码:212-218
关键词核爆炸 ~(137)Cs尘埃 侵蚀速率
其他题名A PRELIMINARY ASSESSMENT OF THE POTENTIAL TO USE ~(137)Cs TO ESTIMATE THE RATES OF SOIL EROSION IN THE LOESS PLATEAU OF CHINA
通讯作者张信宝
合作状况国际
中文摘要核尘埃137Cs降落到地表后,被土壤胶粒强烈吸附,集中分布于0—25cm的土壤表层。土壤剖面的137Cs总量随土壤的流失而减少。根据黄土农耕地和非农耕地土壤的137Cs流失模式,推导了它们的流失量和侵蚀速率的相关公式。根据陕西洛川黑木沟和山西离石羊道沟的13个土壤剖面的137Cs含量测试结果,求得的黑木沟草坡覆盖的老谷坡和新谷坡的侵蚀速率分别为1400 t/km2·a和5700t/km2·a;羊道沟梁峁坡农耕地的侵蚀速率为3270—6030 t/km2·a;裸露新谷坡的侵蚀速率大于8000 t/km2·a。 
英文摘要The world-wide fallout of 137Cs associated with the atmospheric testing of nuclear weapons has provided a valuable man-made tracer for the study of soil erosion and sediment delivery. On reaching the surface as fallout, 137Cs is strongly adsorbed on soil in the upper horizons and moves along with the soil. The 137Cs contents of soil profiles hape been used to estimate the rates of soil erosion under different topography and land-utilization conditions in the areas of Lishi, Shanxi Province and Luochuan, Shaanxi Province. At Lishi, the rates of soil erosion along the old gullies v/ere estimated at 1400 t/km2. a, while at Luochuan, the rates of cultivated land erosion at 3270-6030 t/km2. a. The rates of erosion along the recent gullies without any grass cover are over 8000 t/km2 . a.
学科主题水土保持学
分类号S157
语种中文
公开日期2011-09-07
源URL[http://192.168.143.20:8080/handle/131551/3459]  
专题成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
推荐引用方式
GB/T 7714
张信宝. ~(137)Cs法测算黄土高原土壤侵蚀速率的初步研究[J]. 地球化学,1991(3):212-218.
APA 张信宝.(1991).~(137)Cs法测算黄土高原土壤侵蚀速率的初步研究.地球化学(3),212-218.
MLA 张信宝."~(137)Cs法测算黄土高原土壤侵蚀速率的初步研究".地球化学 .3(1991):212-218.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

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