尕海濕地植物多樣性與生態(tài)系統(tǒng)多功能性關(guān)系沿水鹽梯度的變化

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中圖分類號：X171.1；Q948 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-0435（2025）07-2262-15

doi：10.11733/j.issn.1007-0435.2025.07.021

引用格式：，等.尕海濕地植物多樣性與生態(tài)系統(tǒng)多功能性關(guān)系沿水鹽梯度的變化[J].草地學(xué)報， 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

濕地作為水陸生態(tài)系統(tǒng)相互作用過程中形成的一種過渡性自然綜合體，是地球上單位面積提供最豐富生態(tài)服務(wù)價值、最具生物多樣性保護(hù)意義的生態(tài)系統(tǒng)之—[1-3]。（剩余20711字）