4.6 Article

Effects of Land Use Change on Rainfall Erosion in Luojiang River Basin, China

期刊

SUSTAINABILITY
卷 14, 期 14, 页码 -

出版社

MDPI
DOI: 10.3390/su14148441

关键词

rainfall erosivity; land use; space-time change; ArcGIS

资金

  1. project of key science and technology of the Henan province [222102320333]

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This paper analyzed the spatial and temporal distribution characteristics of rainfall erosivity in the Luojiang River Basin of China using a daily rainfall erosivity model, ArcGIS, trend analysis, and Kriging interpolation method. The study also explored the relationship between land use change types and rainfall erosivity potential. The results showed an overall increasing trend in rainfall erosivity, with a spatial distribution consistent with multi-year average rainfall. Land use change was identified as an important factor affecting the distribution of rainfall erosivity in the basin.
This paper, based on daily rainfall erosivity model, ArcGIS, trend analysis and Kriging interpolation method, analyzed the spatial and temporal distribution characteristics of rainfall erosivity in the Luojiang River Basin of China, and then explored the influence relationship between land use change types and rainfall erosivity potential. The results showed the following: (1) from 1980 to 2019, the distribution range of multi-annual rainfall erosivity in the Luojiang River Basin was 14,674-15,227 MJ center dot mm/ (hm(2)center dot h), with an average value of 14,102 MJ center dot mm/(hm(2)center dot h), showing an overall increasing trend; (2) the spatial distribution of rainfall erosivity value tends to be consistent with the multi-year average rainfall, showing a decreasing trend from the middle to the periphery of the basin; (3) land use change is an important factor affecting the spatial and temporal distribution characteristic of rainfall erosivity value in the basin. The increase in rainfall erosivity will undoubtedly increase the potential of soil erosion. This study can provide theoretical reference for future basin land use planning and put forward preventive suggestions according to the distribution characteristics of rainfall erosivity.

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