中国水土保持科学2025，Vol.23Issue(1)：131-139,9.DOI:10.16843/j.sswc.2024011
浑善达克沙地输电塔基植被恢复区与自然草地生态多功能性的对比研究
Ecological multifunctionality between vegetative restoration areas of transmission tower and natural grasslands in the Otindag Sandy Land
摘要
Abstract
[Background]The Otindag Sandy Land,a critical ecological zone in northern China,faces severe desertification and land degradation.The construction of power transmission and transformation projects lead to soil erosion,vegetation destruction,and habitat loss for animals and plants,severely limiting the ability of ecosystem service function.While vegetation restoration in disturbed tower foundation areas has been implemented,the ecological multifunctionality of these restored zones compared to undisturbed natural grasslands remains unclear.In this study,to explore the impact of power transmission projects on the functionality of ecosystems,we established the restoration grassland and natural grassland plots along the L229 tower base in Duolun county,Inner Mongolia.[Methods]The compositions of community species were investigated in the field.The characteristics of plant leaves,aboveground and underground biomass of the community,as well as soil properties were measured in the laboratory.The species diversity and functional diversity indices of the grassland were calculated,their responses to the implementation of power transmission projects were analyzed,and the relationship between community diversity and ecosystem multifunctionality were investigated.[Results]The power transmission project had no significant effect on the community species diversity index,but significantly reduced the community functional diversity index.The implementation of projects mainly reduced ecosystem multifunctionality by significantly reducing soil nutrient cycling function and ecosystem quality.Species diversity and functional diversity were key factors explaining the decline in ecosystem multifunctionality,and the decrease in functional evenness index in particular had a more significant impact on multifunctionality.[Conclusions]The findings showed that the power transmission and transformation project in eastern Mongolia affected the soil nutrient condition,thus reducing the versatility of grassland ecosystem,providing a theoretical basis for ecological restoration measures in sandy grasslands.关键词
输变电/物种多样性/功能多样性/土壤养分/生态系统多功能性/草地Key words
power transmission and transformation project/species diversity/functional diversity/soil nutrient/ecosystem multifunctionality/grassland分类
资源环境引用本文复制引用
杨世峰,李雪敏,赵立军,王熙瑾,李春江..浑善达克沙地输电塔基植被恢复区与自然草地生态多功能性的对比研究[J].中国水土保持科学,2025,23(1):131-139,9.基金项目
国家电网有限公司科技项目"蒙东地区输变电工程植被快速恢复技术研究"(526606220006) （526606220006）
