| 湖北丹江口水库库区小流域土壤可蚀性特征 |
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| 引用本文： | 朱明勇,谭淑端,顾胜,张全发.湖北丹江口水库库区小流域土壤可蚀性特征[J].土壤通报,2010(2). |
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| 作者姓名： | 朱明勇 谭淑端 顾胜 张全发 |
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| 作者单位： | 中国科学院武汉植物园水生植物与流域生态重点实验室;中国科学院研究生院;湖南农业大学生物科学技术学院;江西省水土保持所; |
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| 基金项目： | 国家“十一五”科技支撑项目(2006BAC10B020); 中国科学院“百人计划”项目(0629221C01)资助 |
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| 摘 要： | 土壤自身的可侵蚀性是土壤侵蚀发生的内在因素。由于具有明确的物理意义和方便的测定方法,土壤可蚀性K指标值成为水土流失预报模型的一个重要参数。采用EPIC中土壤可蚀性K值计算方法,对丹江口水库库区内1.94km2的五龙池小流域的K值进行了计算。结果显示,研究区内土壤可蚀性K值平均为0.0302thm2h(MJmmhm2)-1,与我国其他有黄棕壤分布地区已有的研究结果相一致。小流域土壤可蚀性存在一定的空间变异,但变异性不大(变异系数14.7%),86.56%土地面积上的K值位于0.0264～0.0330之间。从土壤可侵蚀性强弱判断,该区土壤为易侵蚀土。利用反距离权重插值(IDW)进行了K值图的制作,并简要介绍了K值图的应用。
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| 关 键 词： | 土壤可蚀性K值 K值图 丹江口水库 小流域 |
Characteristics of Soil Erodibility in the Danjiangkou Reservoir Region,Hubei Province |
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| ZHU Ming-yong,TAN Shu-duan,GU Sheng ,ZHANG Quan-fa.Characteristics of Soil Erodibility in the Danjiangkou Reservoir Region,Hubei Province[J].Chinese Journal of Soil Science,2010(2). |
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| Authors: | ZHU Ming-yong TAN Shu-duan GU Sheng ZHANG Quan-fa |
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| Institution: | ZHU Ming-yong1,4,TAN Shu-duan1,2,GU Sheng 3,ZHANG Quan-fa 1(1.Laboratory of Aquatic Botany , Watershed Ecology,Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China,2.College of Bioscience , Biotechnology,Hunan Agricultural University,Changsha 410128,3.Jiangxi Research Institute of Soil , Water Conservation,Nanchang 330029,4.Graduate School of Chinese Academy of Sciences,Beijing 100049,China) |
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| Abstract: | The Danjiangkou Reservoir is the water source area of China's South-to-North Water Transfer Project(Middle Route).Water and soil conservation is of critical importance.In this paper,we used Erosion/Productivity Impact Calculator(EPIC) model to calculate the soil erodibility K index value of a representative watershed of Wulongchi with a total area of 1.94 km2.The results showed that the average K value was 0.0302 with spatial variation coefficient of 14.7%.Also,86.56% of the watershed area had a K value bet... |
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| Keywords: | Soil erodibility K value Danjiangkou Reservoir Watershed |
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