137Cs示踪法研究太湖流域土壤侵蚀分布与总量
137Cs示踪法研究太湖流域土壤侵蚀分布与总量
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Hai-ao, ZENG , Jing-lu, WU and Lin, LIN
Publisher
Beijing: Marine Geology and Quaternary Geology
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Language
Chinese
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Beijing: Marine Geology and Quaternary Geology
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Contents
利用137Cs示踪法研究了太湖流域不同地貌和土地利用类型的土壤侵蚀速率分布,初步估算了太湖流域的土壤侵蚀总量。结果表明,土地利用类型相同时,丘陵山坡中点的土壤侵蚀速率与整个坡面的平均值相近;太湖流域山坡中上部以自然坡地为主,土壤侵蚀速率仅为186.6t/km2·a;山坡下部以茶园种植为主,土壤侵蚀速率为3898.5t/km2·a。平原区水田的侵蚀速率与其到山脚的距离正相关,随距离的增大由堆积转变为侵蚀并逐渐增大,山脚水田堆积量和湖岸水田侵蚀量分别为2585.9和6325.7t/km2·a,平均侵蚀速率约为1869.9t/km2·a。太湖流域土壤侵蚀总量约为3446.7×104t,流域土壤侵蚀导致的输入太湖的泥沙量年均约为34.5×104t,与实际监测结果基本一致,说明土壤侵蚀是太湖泥沙输入的...
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Full title
137Cs示踪法研究太湖流域土壤侵蚀分布与总量
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TN_cdi_wanfang_journals_hydzydsjdz200802012
Permalink
https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_hydzydsjdz200802012
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ISSN
0256-1492
