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
许宏斌 1苏艳龙 2张雷 1刘红梅 1刘丽英 1杨溢文 1魏一凡 1王思惟 1赵世明3
作者信息
- 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
- 折叠
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.
Abstract
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 de-creased.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 formulat-ing 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Key words
enclosure/desert steppe in Inner Mongolia/soil physicochemical property/soil mechanical composi-tion引用本文复制引用
基金项目
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)
出版年
2024
NETL
NSTL
万方数据