黄土丘陵区缓坡地不同土地利用方式的产流效应  

Effect of different land use types on runoff on gentle slopes: A case study in the loess hilly area,China

作　　者：靳婷[1,2] 赵文武[1,2] 赵明月[1,2] 徐海燕[2,3] 

机构地区：[1]地表过程与资源生态国家重点实验室(北京师范大学),北京100875 [2]北京师范大学资源学院,北京100875 [3]山东财经大学工商管理学院,济南250014

出　　处：《中国水土保持科学》2012年第4期30-36,共7页Science of Soil and Water Conservation

基　　金：中央高校基本科研业务费专项资金"黄土丘陵沟壑区土地利用与土壤流失关系的尺度效应分析"(105560GK);中国科学院知识创新青年人才项目"黄土丘陵区淤地坝固碳功能的形成机制与时空变异"(KZCX2-YW-QN408);长江学者和创新团队发展计划"土壤水文与土壤侵蚀"(IRT1108);地表过程与资源生态国家重点实验室资助项目"黄土丘陵沟壑区坡面尺度土地利用格局变化的水土流失效应"(2008-ZY-08)

摘　　要：探讨缓坡土地利用方式与水土流失之间的作用机制,对于黄土丘陵沟壑区水土流失治理具有积极意义。利用中国科学院安塞水土保持综合试验站2009—2011年间小区定位监测数据,探讨缓坡谷子地(F)、柳枝稷地(S)、撂荒地(A)、2/3谷子-1/3柳枝稷地(FS)、2/3谷子-1/3撂荒地(FA)5种土地利用方式的产流效应,结果表明:1)缓坡谷子地(F)的径流量最大,受短历时高强度降雨影响显著;2)7月是产生径流的敏感时期;3)土地利用方式S、A、FS、FA与F相比,具有不同程度的减流效应,减流效应大小顺序为A>S>FA>FS;4)植被覆盖度的增加对减少缓坡产流量起到积极作用,但当降雨量、降雨强度较大时,植被覆盖削减径流的作用会被减弱。Study on the action mechanism between land use types and soil erosion on gentle slopes is of significance on controlling water and soil erosion in the loess hilly area. Based on the study in research plots （from 2009 to 2011 ） at Ansai Integrated Experimental Station of the Chinese Academy of Sciences, effects of different land use types on runoff on gentle slope were discussed. Five land use types were selected, including millet field （ F）, switchgrass field （ S）, abandoned land （ A）, two-thirds millet and one-third switehgrass field （FS）, two-thirds millet and one-third abandoned land （FA）. The results showed that： 1 ） Compared with the other four land use types（ S, A, FS, FA） , runoff produced in millet field （F） was the most, and runoff was affected with high rainfall intensity significantly. 2） In the whole observation period, July was the sensitive time of producing runoff. 3） Compared with millet field （F） , other four land use types（ S, A, FS, FA） had positive effects on runoff reduction to different extent, and rank of the effect was A〉S〉FA〉FS.4） For the five land use types（F, S, A, FS, FA）, increase of vegetation coverage was beneficial to runoff ruduction but the effect could be weakened when rainfall and rainfall intensity were large.

关 键 词：径流量 土地利用方式 降雨 缓坡地 黄土丘陵区 

分 类 号：S157.1[农业科学—土壤学]