案例,spss,数据分析

降雨侵蚀力的估算对滁州地区土壤侵蚀估算结果的影响


字数:7500字  原创指数:335  类别:案例模板

【内容概述】

降雨侵蚀力的估算对滁州地区土壤侵蚀估算结果的影响降雨侵蚀力的估算利于精确对于土壤侵蚀的估算,本文通过利用年均降雨侵蚀力模型和月均降雨量侵蚀力模型估算降雨侵蚀力,还采用了不同气象站点的数目估算降雨侵蚀力的差异。结果表明通过不同降雨侵蚀力模型与不同气象站点数目估算的降雨侵蚀力对土壤侵蚀估算的结果其差异大于5%。利用年降雨量模型和滁州七个站点估算的降雨侵蚀力,发现滁州地区的降雨侵蚀力西部和北部侵蚀较弱,中部和东南部、东北部侵蚀力较强。因为降雨侵蚀力R反应了降雨对土壤侵蚀的的潜在作用,如何正确评估降雨侵蚀力是土壤侵蚀定量评价研究中的一个重要的问题。本文对于滁州降雨侵蚀力的估算,对于滁州土壤侵蚀的估算有着重要的意义。
关键词:降雨侵蚀力;GIS;USLE;土壤侵蚀
Estimate rainfall erosive impact on soil erosion estimated results chuzhou area
Abstract:Rainfall erosive estimation for accurate for estimating soil erosion, the paper by using the average annual rainfall erosive model and the average monthly rainfall erosive model to estimate erosive, also uses the difference between the number of different meteorological stations to estimate rainfall erosive. The results showed that different rainfall erosive model and the number of different meteorological stations to estimate rainfall erosive on the results of soil erosion estimates the difference is greater than 5%. With annual rainfall model and chuzhou seven sites to estimate rainfall erosion force, found the north and west chuzhou district of rainfall erosion force erosion is weak, strong erosion force central and southeast and northeast. Because rainfall erosion force R response to the potential effects of rainfall on soil erosion, how to correctly evaluate soil erosion rainfall erosion force is an important issue in the study of quantitative evaluation. This paper for estimating chuzhou rainfall erosion force, is of great significance for the estimation of chuzhou soil erosion.
Key words: Rainfall erosivity; GIS; USLE; Soil erosion