학술논문
砒砂岩区沙棘减蚀机理及其影响因子研究 / Mechanism and Influencing Factors of Erosion Reduction of Seabuckthorn in the Pisha Sandstone Areas
Document Type
Academic Journal
Source
中国水土保持 / Soil and Water Conservation in China. (3):51-72
Subject
Language
Chinese
ISSN
1000-0941
Abstract
为揭示在次降雨(暴雨)条件下砒砂岩区沙棘的减蚀机理及其影响因子,采用逐步回归分析法对砒砂岩区两个水土保持监测站点的沙棘小区和裸地小区 2022 年观测数据进行了分析,结果表明:沙棘小区的水土流失量大幅少于裸地小区,仅为裸地小区的 4%左右;裸地小区水土流失模型的第一影响因子为最大 30 min降雨强度,而沙棘小区的第一影响因子是降雨侵蚀力,说明沙棘覆盖影响了水土流失成因,改变了产生水土流失的机理.
To reveal the mechanism and influencing factors of erosion reduction of seabuckthorn in the Pisha sandstone areas under individual rain-fall/rainstorm conditions,the paper analyzed the observation data of seabuckthorn land and bare land from two monitoring stations of soil and water conservation in the Pisha sandstone areas in 2022 using the stepwise regression analysis method.The outcomes show that a)the amount of soil erosion and water loss in seabuckthorn land is significantly less than that in bare land,only about 4%of that in bare land;b)the main influencing factor of the soil erosion and water loss model in bare land is the maximum 30 minute rainfall intensity,while the main influ-encing factor in seabuckthorn land is the rainfall erosivity,indicating that seabuckthorn coverage affects the causes of soil erosion and water loss and changes the mechanism of soil erosion and water loss.
To reveal the mechanism and influencing factors of erosion reduction of seabuckthorn in the Pisha sandstone areas under individual rain-fall/rainstorm conditions,the paper analyzed the observation data of seabuckthorn land and bare land from two monitoring stations of soil and water conservation in the Pisha sandstone areas in 2022 using the stepwise regression analysis method.The outcomes show that a)the amount of soil erosion and water loss in seabuckthorn land is significantly less than that in bare land,only about 4%of that in bare land;b)the main influencing factor of the soil erosion and water loss model in bare land is the maximum 30 minute rainfall intensity,while the main influ-encing factor in seabuckthorn land is the rainfall erosivity,indicating that seabuckthorn coverage affects the causes of soil erosion and water loss and changes the mechanism of soil erosion and water loss.