摘要
利用2000～2008年逐日降水量数据,对我国北方农牧交错带降雨侵蚀力进行研究。发现研究区年均降雨侵蚀力介于3 485.46～5 654.76 MJ.mm/(hm2.h)之间;夏季降雨侵蚀力所占比重最大;春秋两季相当,仅次于夏季;冬季全区降雨侵蚀力为零;降雨侵蚀力各季节的空间分布不同;降雨侵蚀力与降水量和降水强度的组合状况密切相关。该研究可为其他地区的降雨侵蚀力时空分布研究提供方法和技术参考,研究结论可以为研究区水土保持措施的制定提供科学依据和指导。
By using daily precipitation data during 2000-2008,the rainfall erosivity in agro-pastoral ecotone of Northern China was studied.The result demonstrated that the average annual rainfall erosivity are from 3 485.46 to 5 654.76 MJ·mm/(hm2·h),summer is the most erosive season,spring or fall is less than the summer,and the rainfall erosivity is zero in winter.The spatial distribution of rainfall erosivity is different in different seasons.The rainfall erosivity is closely related to precipitation and precipitation intensity.The research can provide method and reference for the spatial-temporal distribution of rainfall erosivity in other regions,and the conclusion can provide basis and guidance for the formulation of soil and water conservation measures in the study area.
出处
《安徽农业科学》
CAS
2013年第7期3057-3059,共3页
Journal of Anhui Agricultural Sciences
关键词
北方农牧交错带
降雨侵蚀力
时空分布
Agro-pastoral ecotone of Northern China
Rainfall erosivity
Spatial-temporal distribution
