当前位置: 首页 > 文章 > 湖北丹江口水库库区小流域土壤可蚀性特征 土壤通报 2010,41 (2) 434-436
Position: Home > Articles > Characteristics of Soil Erodibility in the Danjiangkou Reservoir Region,Hubei Province Chinese Journal of Soil Science 2010,41 (2) 434-436

湖北丹江口水库库区小流域土壤可蚀性特征

作  者:
朱明勇;谭淑端;顾胜;张全发
单  位:
中国科学院研究生院;江西省水土保持所;中国科学院武汉植物园水生植物与流域生态重点实验室;湖南农业大学生物科学技术学院
关键词:
土壤可蚀性K值;K值图;丹江口水库;小流域
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。
译  名:
Characteristics of Soil Erodibility in the Danjiangkou Reservoir Region,Hubei Province
作  者:
ZHU Ming-yong1,4,TAN Shu-duan1,2,4,GU Sheng 3,ZHANG Quan-fa 1(1.Laboratory of Aquatic Botany and Watershed Ecology,Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China;2.College of Bioscience and Biotechnology,Hunan Agricultural University,Changsha 410128,China;3.Jiangxi Research Institute of Soil and Water Conservation,Nanchang 330029,China;4.Graduate School of Chinese Academy of Sciences,Beijing 100049,China)
关键词:
Soil erodibility;K value;Danjiangkou Reservoir;Watershed
摘  要:
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 between 0.0264 and 0.0330.Inverse distance weighted interpolation(IDW) was applied to map K value in the small watershed.The paper also briefly discussed the application of K-value map.

相似文章

计量
文章访问数: 9
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊