摘要
基于InVEST模型的Sediment Delivery Ratio模块,定量评估济南市2010年、2015年、2020年的土壤保持功能变化情况,分析不同土地利用类型及不同坡度下的土壤保持均值与总量。结果表明:相较于2010年,2020年济南市土壤保持总量显著增加,增幅约为25.3%;不同土地利用类型的土壤保持均值以林地、草地居高,土壤保持总量以林地、耕地居高;从时间上来看,各种地类的土壤保持均值、土壤保持总量均呈现增长趋势;不同坡度的土壤保持均值以25°~35°的陡坡地区最大,土壤保持总量以15°~25°的较陡坡地区最大。可为济南市水利发展和水土保持工作提供参考。
Based on the Sediment Delivery Ratio module of InVEST model,it was quantitatively evaluated the changes of soil conservation function in Jinan in 2010,2015 and 2020,and analyzed the mean value and total amount of soil conservation under different land use types and different slopes.The results showed that compared with 2010,the total amount of soil conservation in Jinan in 2020 had a significant increase of 25.3%.The average soil conservation value of different land use types was higher in woodland and grassland,and the total soil conservation value was higher in woodland and cultivated land.From the perspective of time,it showed an increasing trend to the average and total soil conservation of all kinds of land.The mean value of soil conservation of different slopes is the largest in the steep slope area of 25°~35°,and the total soil conservation value is the largest in the steep slope area of 15°~25°.It provides reference for water conservancy development and soil and water conservation in Jinan.
作者
王硕
韩瑜
林峻辉
WANG Shuo;HAN Yu;LIN Junhui(Jinan Water Conservancy Building Survey,Design and Research Institute Co.,Ltd.,Jinan,Shandong 250100,China;Jinan Urban Development Group Rural Revitalization Co.,LTD.,Jinan,Shandong 250100,China)
出处
《山东水利》
2024年第5期53-56,共4页
Shandong Water Resources
