倒淌河湿地不同植被群落土壤盐分分布特征研究

打开文本图片集

中图分类号：S156.41 文献标识码：A 文章编号：1007-0435（2025）09-2900-12

引用格式：吴桂玲，吴晓晖，欧为友，等.倒淌河湿地不同植被群落土壤盐分分布特征研究[J].草地学报，2025，33（9）：2900- 2911 WU Gui-ling，WU Xiao-hui，OU Wei-you，etal.Studyon the Distribution Characteristics of Soil Salinityof Difrent Vegetation Communities in Daotang River Wetland[J].Acta Agrestia Sinica，2O25，33（9）：2900-2911

Studyon the Distribution Characteristics of Soil Salinity of Different Vegetation Communitiesin Daotang River Wetland

WU Gui-lingl*，WU Xiao-hui²， OU Wei-you³， ZHOU Hua-kun4，MA Wen-wen³

（1.StateKeyLabratoryofSanjangyuanEcologandPlateauAgriutureandAialHusbandryQighaiUniversityXiningQingrovince 810001，China；2.ColegeofAgricultureandAnimalHusbandry，QinghaiUniversity，Xining，QinghaiProvinceooChina;3.QinghaiGrassandneralStationXiingQghaiProvinceO6，hina;4.Nrthestituteofateulogineseadeyf Sciences，Xining，Qinghai Province 81oo16，China）

Abstract： To reveal the soil salinity distribution characteristics and salt ion variation patterns across diferent vegetation communities，72 sample plots were selected from three typical communities in the Daotang River Wetland．A total of 216 soil samples from 0-30cm depth （0-10cm ， 10-20cm ，and 20-30cm ）were collected to analyze total salt content （S），sodium adsorption ratio （SAR），exchangeable sodium percentage（ESP）， and the distribution of eight salt ions，while comparing soil salinization degrees and nutrient profiles. The results showed that the soil S，SAR，and ESP in the soil of weed community were significantly higher than those in the Iris and Blysmus communities （ P<0.05 ．Among the eight salt ions detected，the content of Na+ and Cl- was significantly higher than those of other ions and dominated the composition of soil salt ions. Among them，NaCl was a key driving factor for soil alkalization.The content of available potassium and phosphorus in the 0-10cm layer was significantly higher than those in deeper soils across all communities （ （P<0.05 .Both Iris and weed communities exhibited severe salinization（classified as chloride-saline soils）requiring prioritized rehabilitation.This study aims toanalyze the composition ofsalt ions，the driving factors ofsalinization and the and vertical nutrient diferentiation，providing a scientific basis for salinization control and ecological restoration in alpine wetlands.

Key words：Salinized wetlands;Different vegetation communities;Salt ion distribution;Salinization characteristics

倒淌河湿地是青海湖流域的典型盐碱湿地，属于高寒湿地，不仅承载着重要的生态功能，还维持着丰富的生物多样性[1]。（剩余15140字）