尕海湿地植物多样性与生态系统多功能性关系沿水盐梯度的变化

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中图分类号：X171.1；Q948 文献标识码：A 文章编号：1007-0435（2025）07-2262-15

doi：10.11733/j.issn.1007-0435.2025.07.021

引用格式：，等.尕海湿地植物多样性与生态系统多功能性关系沿水盐梯度的变化[J].草地学报， 2025，33（7） ：2262—2276 LONGZHU Duojie， ZHANG Xu-ping，LIU Qiang，et al. Relationships Between Plant Diversity and Ecosystem MultifunctionalityAlongaWater-Salt Gradientinthe Gahai Wetland[J].Acta AgrestiaSinica，2O25，33（7）：22622276

Abstract：The purpose of this study was to explore the relationship between plant diversity and ecosystem multi functionality. Taking Qinghai Delingha Gahai National Wetland Park as the object，K-means clustering method was used to divide three water and salt gradients of high，medium and low，and the changes of environmental factors，plant species diversity，functional diversity and ecosystem multifunctionality were analyzed．The results showed that there were significant diferences in plant diversity index and functional richness index under three Water and salt gradients.The value of low water and low salt environment was the largest，and the value ofhigh waterand high salt environment was the smalest.Thecorelation between plant diversity and functional diversity decreased with the decrease of water and salt gradient. Among the abiotic factors，soil conductivity played a decisive role in the multifunctionalityof the ecosystem，and soil moisture content indirectlyafects it. Among the biological factors，the efect of functional diversityon ecosystem multifunctionality is greater than thatof species diversity.In summary，the water-salt gradient significantly affects plant diversity and ecosystem function，which is of great significance to the protection of Gahai wetland.

Key Words：GahaiLake; Water-salt gradient;Plantdiversity;Plantcommunitysuccesion;Ecosystemmultifunctionality

湿地作为水陆生态系统相互作用过程中形成的一种过渡性自然综合体，是地球上单位面积提供最丰富生态服务价值、最具生物多样性保护意义的生态系统之—[1-3]。（剩余20711字）