锡林郭勒草原土壤水分时空特征分析  

Spatial and temporal analysis of soil moisture in Xilingol steppe

作　　者：常帅 于红博[1,2] 张巧凤 李想[4] 乌日汗 刘月璇 张鹏[1] CHANG Shuai;YU Hongbo;ZHANG Qiaofeng;Li Xiang;WU Rihan;LIU Yuexuan;ZHANG Peng(College of Geography Science,Inner Mongolia Normal University,Hohhot 010022,China;Key Laboratory of Mongolian Plateaus Climate System at Universities of Inner Mongolia Autonomous Region,Inner Mongolia Normal University,Hohhot 010022,China;Future School,Kangbashi District,Ordos City,Inner Mongolia,Ordos 017010,China;Jinshan No.5 Middle School in Chifeng City,Inner Mongolia 024423,China)

机构地区：[1]内蒙古师范大学地理科学学院,内蒙古呼和浩特010022 [2]蒙古高原气候变化与区域响应内蒙古自治区高校重点实验室,内蒙古呼和浩特010022 [3]鄂尔多斯市康巴什区未来学校,内蒙古鄂尔多斯017010 [4]赤峰市锦山第五中学,内蒙古赤峰024400

出　　处：《草学》2024年第1期36-43,共8页Journal of Grassland and Forage Science

基　　金：内蒙古自然基金项目(2023MS04005,2021MS04015)资助。

摘　　要：为研究内蒙古锡林郭勒草原不同草原地区土壤水分的时空差异特征,运用灰色关联度法和方差分析法对3种草原类型植被在2017年5-9月份的土壤水分及总储水量变化进行了分析。结果显示:1)在剖面方向上,草甸草原和荒漠草原土壤水分关联度均在中层与深层达到最高值,分别为0.7250和0.7865,典型草原土壤水分关联度最高值在表层与深层,数值为0.8071。2)在不同时间尺度上,不同草原类型土壤水分的关联度存在差异性。以植被生长初期5月份为参考序列,草甸草原土壤水分变化趋势为降低-上升的动态变化,典型草原土壤水分关联度则呈现降低-升高-降低的变化趋势,荒漠草原则与典型草原呈现相反的动态变化特征。3)从同一月份不同草原类型来看,7-8月份荒漠草原的土壤总储水量与典型草原和草甸草原的总储水量具有显著差异性,其余月份间均没有显著性差异。In order to study the characteristics of the temporal and spatial differences of soil moisture in different steppe areas of the Xilingol steppe in Inner Mongolia,the changes in soil moisture and total water storage of three steppe types of vegetation from May to Sep⁃tember in 2017 were analyzed using the gray correlation method and the analysis of variance method.The results showed that:1)In the section direction,the soil moisture correlation of meadow steppe and desert steppe reached the highest value in the middle and deePlayers,respectively,0.7250 and 0.7865,while the highest value of the typical steppe soil moisture correlation was 0.8071 in the surface and dee⁃Players.2)On different time scales,there were differences in the correlation degree of soil moisture of different steppe types.Taking the early May of vegetation growth as a reference sequence,the change trend of soil moisture in meadow steppe is a dynamic change of decrea⁃sing-increasing.The soil moisture correlation degree of typical steppe shows a decreasing-increasing-decreasing trend,while the principle of desert grass has the opposite dynamic characteristics of typical steppe.3)From the perspective of different steppe types in the same month,the total soil water storage of desert grassland from July to August was significantly different from the total water storage of typical steppe and meadow steppe,and there is no significant difference in the remaining months.

关 键 词：草原类型 土壤水分 灰色关联度 土壤储水量 时空特征 

分 类 号：S812.8[农业科学—草业科学]