摘要
通过对四川省南充市升钟水库水土保持试验站2001～2004年的坡面径流观测资料进行分析，探讨了不同土地利用方式对水土流失的影响。结果表明：研究区域的降雨量年际分布不均匀，2001—2004年，年降雨量、汛期降雨量及侵蚀降雨量呈逐渐降低的趋势；在不同土地利用方式下，径流量、径流深、径流系数及径流模数的大小顺序为：人工破坏型〉封坡禁伐型〉荒坡垦种型，而水土流失量的大小顺序为：荒坡垦种型〉人工破坏型〉封坡禁伐型。回归分析表明，人工破坏型的水土流失量与降雨强度、降雨量、降雨历时存在极显著的线性回归关系，但封坡禁伐型及荒坡垦种型的水土流失量仅与降雨强度、降雨量存在极显著的线性回归关系。
Through analysis on slope runoff measurement data of soil-water conservation experiment station in Shengzhong reservoir in Nanchong city of Sichuan Province,the influence of different land utilization ways on soil-water loss is researched.The results show the annual precipitation is uneven in the research area,form 2001 to 2004 annual rainfall amount,rainy season rainfall amount and erosion rainfall amount had a decrease tendency.For different land utilization ways,the order of runoff,runoff depth,runoff coefficient and runoff modulus are: man-made destroyed zone>vegetation-felling banned zone> barren hillside-cropping zone,while the order of soil-water loss amount are: barren hillside-cropping zone > man-made destroyed zone >vegetation-felling banned zone.Regression analysis shows soil-water loss in man-made destroyed zone has obvious linear relationships with rainfall intensity,rainfall amount,rain duration,but for hillside-cropping zone and barren hillside-cropping zone,soil-water loss only has obvious linear relationships with rainfall intensity,rainfall amount.
出处
《人民长江》
北大核心
2009年第11期68-69,共2页
Yangtze River
基金
四川农业大学2006年校青年科技创新基金项目经费资助
关键词
土地利用方式
水土流失
紫色土
线性回归关系
land utilization ways
soil-water loss
purple soil
linear regression relationship
