遂宁组母质封禁后的土壤侵蚀规律分析 Analysis of Soil Erosion on Suining Group Parent Material Aft

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遂宁组母质封禁后的土壤侵蚀规律分析

Analysis of Soil Erosion on Suining Group Parent Material After Closing Management

通过遂宁市水土保持试验站母质侵蚀观测场长期连续观测试验,收集1991-2000年资料,采用数据分析方法,对遂宁组紫色土母质侵蚀规律进行了研究.结果表明: (1) 母质侵蚀区在封禁10 a内的年际地表径流模数与年际降雨量变化趋势一致,而土壤侵蚀模数总体呈现逐年下降趋势; (2) 径流深与降雨量呈正相关,与降雨时间呈负相关. (3) 降雨量和平均降雨强度两因子对土壤侵蚀量影响不显著,土壤侵蚀量与地表径流深在封禁期前4 a内能建立回归方程.由此认为,采用封禁管理来防治紫色土母质侵蚀可行,封禁至少8 a以上土壤侵蚀强度类型才由剧烈侵蚀逐渐转化为轻度侵蚀.水利论文] I]w(W3T$fa

作 者: 杨远祥 朱雪梅 邵继荣 林立金 吴咏 蒋小军 YANG Yuan-xiang ZHU Xue-mei SHAO Ji-rong LIN Li-ji WU Yong JIANG Xiao-jun  
作者单位:杨远祥,朱雪梅,林立金,蒋小军,YANG Yuan-xiang,ZHU Xue-mei,LIN Li-ji,JIANG Xiao-jun(四川农业大学,资源环境学院,四川,雅安,625014)
WZ1nHkXe5B0邵继荣,SHAO Ji-rong(四川农业大学生命科学与理学院,四川,雅安,625014)
Z?#Z)u rl[!B!mV8S0吴咏,WU Yong(遂宁市水土保持试验站,四川,遂宁,629006) 
刊 名:水土保持通报  ISTIC PKU
英文刊名:BULLETIN OF SOIL AND WATER CONSERVATION 
年,卷(期):2007 27(1) 
分类号:S157 
关键词:遂宁组   紫色母质   降雨量   径流深   土壤侵蚀量   封禁管理  
机标关键词:遂宁组紫色土母质土壤侵蚀量规律分析Parent Material降雨量土壤侵蚀强度土壤侵蚀模数径流深水土保持侵蚀规律径流模数降雨强度回归方程观测试验封禁管理分析方法地表变化趋势遂宁市 
基金项目:四川省科技厅资助项目 
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