2008—2020年永和县旱平地面积变动特征分析  

Analysis of the Characteristics of Changes in Dryland Area in Yonghe County from 2008 to 2020

作　　者：周晗 王小云[1] 张文丽 Zhou Han;Wang Xiaoyun;Zhang Wenli(Institute of soil and water conservation,Shanxi Agricultural University,Taiyuan,Shanxi 030013,China)

机构地区：[1]山西农业大学水土保持科学研究所,山西太原030013

出　　处：《山西水土保持科技》2024年第4期54-56,共3页Soil and Water Conservation Science and Technology in Shanxi

基　　金：山西省水利科研与推广项目(2024GM23)资助

摘　　要：为探究永和县旱平地各种土地利用类型面积多年来的变化特征,文章以2008年、2012年、2016年、2020年四期的旱平地土地利用数据为基础,对比分析了研究区旱平地各种土地利用类型的变化特征及其土地利用动态度。结果表明:(1)2008—2020年研究区旱平地以水平梯田为主,占比48.90%~72.93%;坝地、旱坪垣地次之,占比分别为17.62%~28.86%、7.66%~20.17%;滩地最少,占比1.72%~2.07%。(2)2008—2020年各类型旱平地面积绝对变化量为:水平梯田>坝地>滩地>旱坪垣地。水平梯田面积呈增加趋势,坝地、滩地面积先增加后保持不变,旱坪垣地面积先减小后保持不变。(3)2008—2020年水平梯田动态度最大,达22.34%;滩地、坝地动态度居中;旱坪垣地动态度最小,仅为-0.52%。不同研究时段旱平地各种类型土地面积动态度变化各异,其中2008—2012年水平梯田动态度最大,高达25.61%。(4)未来旱平地治理应更注重提升土壤肥力、优化节水灌溉技术、改进耕作制度等方面,进而推动土地资源高质量发展和乡村全面振兴。To explore the dynamic characteristics of various land-use types in the dry flat ground of Yonghe County over the years,this paper compares and analyzes the dynamic characteristics and land use dynamic attitude of various land-use types in the dry flat ground based on four periods of land use data from 2008,2012,2016,and 2020.The results showed that:(1)From 2008 to 2020,the horizontal terraces were the main land-use types in the study area,accounting for 48.90%to 72.93%;The proportion of dam land and dryland was second,accounting for 17.62%~28.86%and 7.66%~20.17%respectively;The floodplain was the least,accounting for 1.72%~2.07%.(2)The absolute change in the area of various types of dry flat ground from 2008 to 2020 was:horizontal terraces>dam land>floodplain>dryland.The area of horizontal terraces showed an increasing trend,while the area of dam land showed a decreasing trend.The area of dam land and floodplain first increased and then remained unchanged.The area of dryland on the beach first decreased and then remained unchanged.(3)The land use dynamic attitude of dry flat ground area from 2008 to 2020,the dynamic degree of horizontal terraces was the highest,reaching 22.34%;The dynamic degree of floodplain and dam land were in the middle;The dynamic attitude of dryland was the smallest,only-0.52%.The dynamic changes of various types of land area in dry flat ground during different research periods vary,among which dynamic attitude of horizontal horizontal terraces was the highest from 2008 to 2012,reaching 25.61%.(4)In the future,the management of arid flat land should pay more attention to improving soil fertility,optimizing water-saving irrigation technology,and improving farming system,in order to promote high-quality development of land resources and comprehensive rural revitalization.

关 键 词：旱平地 水平梯田 土地利用动态度 

分 类 号：S158[农业科学—土壤学]