摘要
为了解鄂尔多斯市的土壤侵蚀及土壤保持功能的时空变化特征,采用InVEST模型计算了研究区域内潜在与实际的土壤侵蚀量,在此基础上应用该模型分析评估了区域土壤保持功能。结果表明,鄂尔多斯市2005、2015年实际土壤侵蚀总量分别为266.44×10^(6)、306.53×10^(6)t,2015年相较于2005年增加了40.09×10^(6)t;2005、2015年的土壤保持总量分别为1.19×10^(9)、1.75×10^(9)t,研究区域土壤保持总量及等级有较大提升;研究区土壤侵蚀的微度、轻度、中度、强度侵蚀均有向更高级别侵蚀转化的趋势,但极强度和剧烈侵蚀大多向更低级别的侵蚀转化,土壤保持强度则均向更高级别的保持强度转化.
To understand the temporal and spatial distribution characteristics of soil erosion and soil conservation functions in Ordos City,the InVEST model was used to calculate the potential and actual soil erosion of the ecosystem in the study area,and the model was further applied to quantitatively analyze and dynamically evaluate the regional soil conservation function.The results show that the actual total soil erosion in Ordos City in 2005 and 2015 were 266.44×10^(6) t and 306.53×10^(6) t,respectively,which increased by 40.09×10^(6) t compared to 2005;The total amount of soil conservation in 2005 and 2015 were 1.19×10^(9) t and 1.75×10^(9) t,respectively.The total amount and grade of soil conservation in the study area have been greatly improved;The erosion below the soil strength in the study area has a tendency to transform to higher grade erosion,but most of the extreme and severe erosion transform to lower grade erosion;The soil retention intensity all transform to higher grade retention intensity.
作者
吴志俊
王永强
鄢波
李凯
黄峰
WU Zhi-jun;WANG Yong-qiang;YAN Bo;LI Kai;HUANG Feng(Department for the Integrated Use of Water Resources,Yongtze River Scientific Research Institute,Wuhan 430010,China;College of Hydrology and Water Resources Hohai University,Nanjing 210098,China)
出处
《水电能源科学》
北大核心
2021年第8期31-34,98,共5页
Water Resources and Power
基金
国家重点研发计划(2017YFC0403606)。
