摘要
【目的】揭示太原市土壤侵蚀敏感性时间动态变化与空间分异特征,识别容易产生土壤侵蚀的区域,评价土壤侵蚀对人类活动的敏感程度,为太原市生态环境保护与建设以及社会经济高质量发展提供科学依据。【方法】选取降雨侵蚀力、地形起伏度、土壤质地和土地利用/植被覆盖4个因子,采用综合评价法,选择2000年、2005年、2010年、2015年以及2019年5个时期分析了太原市2000~2019年的土壤侵蚀敏感性。【结果】从2000年到2005年,太原市土壤侵蚀敏感性降低,从2005年到2019年太原市土壤侵蚀敏感性总体增强;从2000年到2019年,太原市土壤不敏感、轻度敏感和中度敏感区域面积减少,其中不敏感性区域消失,轻度敏感性区域面积减少2.97%,中度敏感性区域减少47.328%,高度和极度敏感性区域增加,其中高度敏感性区域增加41.362%,极度敏感性面积增加8.991%。【结论】土壤侵蚀敏感性受降雨、植被覆盖度、土壤质地、地形等多种因素影响,其中降雨是影响太原市土壤侵蚀敏感性的关键因子。
【Objective】Soil erosion sensitivity reflects the sensitivity of soil erosion to human activities.In order to reveal the temporal dynamic change and spatial differentiation characteristics of soil erosion sensitivity in Taiyuan,research was conducted to identify the areas prone to soil erosion and evaluate the sensitivity of soil erosion to human activities providing scientific basis for the protection and construction of ecological environment and ensuring high-quality development of social economy in Taiyuan.【Method】In this paper,by comprehensive evaluation method,four factors including rainfall erosivity,topographic relief,soil texture and vegetation coverage and five periods(2000,2005,2010,2015 and 2019)were selected to analyze the sensitivity of soil erosion in Taiyuan from 2000 to 2019.【Result】Soil erosion sensitivity decreased from 2000 to 2005 and increased from 2005 to 2019.From 2000 to 2019,insensitive,mildly sensitive,and moderately sensitive areas decreased,among which insensitive area disappeared,mildly sensitive area decreased by 2.97%and moderately sensitive area decreased by 47.328%.Highly and extremely sensitive areas increased,among which highly and extremely sensitive area increased by 41.362%and 8.991%respectively.【Conclusion】Soil erosion susceptibility is affected by rainfall,vegetation cover,soil texture,topography and other factors,of which rainfall is the key factor.
作者
石玉琼
王宁练
SHI Yuqiong;WANG Ninglian(College of Urban and Environmental Science,Northwest University,Xi´an 710124,China;Key Laboratory of Surface System and Environmental Carrying Capacity in Shaanxi Province,Xibei University,Xi´an 710124,China;College of Forestry,Shanxi Agricultural University,Taigu 030801,China)
出处
《甘肃农业大学学报》
CAS
CSCD
2023年第5期199-210,共12页
Journal of Gansu Agricultural University
基金
国家自然科学基金项目(42130516)。
