堆土容重与土壤侵蚀量关系及其在水土流失监测中的应用设想

Relationship between Soil Bulk Density and Soil Erosion Amount and Its Application Assumption in Soil and Water Loss Monitoring

开发建设项目中临时或永久弃土场是水土流失产生较为集中的区域。根据弃渣场堆土边坡水土流失发生机理,通过人工模拟降雨试验研究堆土容重变化与土壤侵蚀量的关系,进而探讨通过测定容重精准监测土壤侵蚀量方法的可行性。SPSS相关性分析结果表明,容重和土壤侵蚀量呈极显著负相关,随着容重增大,土壤侵蚀量呈明显减少趋势,且这种相关性的存在并不受雨强和堆积体坡度这两个因素影响。利用数据分析方法,建立了容重与土壤侵蚀量的关系模型。但是要利用这种方法监测开发建设项目土壤侵蚀量还需要进行大量试验,这是今后研究的重点。

In the development and construction works,the temporary or permanent spoil ground is concentrated area of soil and water loss.According to the generation mechanism of soil and water loss of accumulated soil slope of spoil ground,the paper studied the relationship between the bulk density of soil and soil erosion amount through simulated rainfall tests and studied the feasibility of measure bulk density for precise monitoring the amount of soil erosion.The outcomes of SPSS correlation analysis show that the bulk density and soil erosion amount have extremely remarkable negative correlation,the amount of soil erosion shows remarkable reduction trend along with the increase of bulk density and the existence of the relativity is not affected by the two factors of rainfall intensity and slope of deposit body.It established a relation model of bulk density and soil erosion amount by using the method of data analysis.While,to use the method to monitor the amount of soil erosion of development and construction projects still needs a large number of tests and this is the research focus in the future.