围封对荒漠草原土壤理化特性的影响  

Impact of Enclosure on Soil Physicochemical Properties in Desert Grassland

作　　者：许宏斌 苏艳龙 张雷[1] 刘红梅[1] 刘丽英[1] 杨溢文 魏一凡 王思惟 赵世明 XU Hongbin;SU Yanlong;ZHANG Lei;LIU Hongmei;LIU liying;YANG Yiwen;WEI Yifan;WANG Siwei;ZHAO Shiming(Inner Mongolia Academy of Forestry Sciences,Hohhot 010010,China;School of Ecology and Environment,Inner Mongolia University,Hohhot 010021,China;Comprehensive Guarantee and Technology Promotion Center of Xigangou Township,Duolun County,Inner Mongolia,Xinlin Gol 027399,China)

机构地区：[1]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [2]内蒙古大学生态与环境学院,内蒙古呼和浩特010021 [3]多伦县西干沟乡综合保障和技术推广中心,内蒙古锡林浩特027399

出　　处：《内蒙古林业科技》2024年第2期1-5,共5页Journal of Inner Mongolia Forestry Science and Technology

基　　金：国家自然科学基金项目(31960284);内蒙古自治区科技重大专项专题(2021ZD0044)。

摘　　要：围封不仅有助于恢复草地物种多样性、提升生产力,并且有利于土壤结构与功能的维持。本研究以内蒙古苏尼特荒漠草原为研究对象,分析围封10 a对内蒙古苏尼特荒漠草原土壤理化特性的影响。结果表明:和对照样地相比,围封10 a土壤0~20 cm土层中砂粒含量降低4.7%,粉粒和黏粒含量分别增加14.4%和27.2%;围封10 a可以促进荒漠草原土壤表层0~5 cm的持水情况,但5~20 cm土层土壤持水能力降低;围封10 a土壤有机质、全碳、全氮、全钾含量分别增加22.8%、26.3%、16.6%、2.2%。研究结果可为荒漠草原制定合理的围封政策、制度提供科学依据。Enclosure not only helps restore grassland species diversity and enhance productivity,but also helps maintain soil structure and function.Taking Sonid Desert Steppe in Inner Mongolia as research object,the impact of 10-year enclosure on the soil physicochemical properties of Sonid Desert Steppe was analyzed.The results showed that compared with the control plot,the sand content in 0-20 cm soil layer of 10-year enclosure decreased by 4.7%,while the silt and clay content increased by 14.4%and 27.2%,respectively.Enclosure for 10 years could promote the water holding capacity of 0-5 cm surface soil layer,but the water holding capacity of 5-20 cm soil layer decreased.The contents of soil organic matter,total carbon,total nitrogen and total potassium increased by 22.8%,26.3%,16.6%and 2.2%,respectively after 10-year enclosure.The results can provide scientific basis for formulating reasonable enclosure policies and systems in desert steppe.

关 键 词：围封 内蒙古荒漠草原 土壤理化特性 土壤机械组成 

分 类 号：S812.2[农业科学—草业科学]