青海可鲁克湖-托素湖湿地自然保护区不同植被类型土壤碳氮磷生态化学计量学特征  

Ecological stoichiometric characteristics of soil carbon,nitrogen and phosphorus of different vegetation types in Keluke Lake-Tuosu Lake Wetland Nature Reserve in Qinghai Province

作　　者：盛洲 龙主多杰 周宸宇 胡娟 拉本[1,2] SHENG Zhou;LONGzhu Duojie;ZHOU Chenyu;HU Juan;LA Ben(College of Life Science,Qinghai Normal University,Xi ning 810008,China;Key Lab of Medicinal Animal and Plant Resources of Qinghai-Tibet Plateau,Xi ning 810008,China)

机构地区：[1]青海师范大学生命科学学院,青海西宁810008 [2]青藏高原药用动植物资源重点实验室,青海西宁810008

出　　处：《生态科学》2024年第3期135-143,共9页Ecological Science

基　　金：青海省应用基础研究项目(2020-ZJ-750)。

摘　　要：为研究可鲁克湖-托素湖湿地自然保护区内不同植被类型土壤的生态化学计量学特征,以保护区内4种植被类型:白刺地(Nitraria tangutorum)V1、柽柳地(Tamarix chinensis)V2、盐爪爪地(Kalidium foliatum)V3、芦苇地(Phragmites communis)V4为研究对象,分析土壤有机碳(soil organic carbon,SOC)、全氮(total nitrogen,TN)、全磷(total phosphorus,TP)含量及其化学计量学特征。结果表明:4种不同植被类型土壤有机碳、全氮、全磷含量的平均值分别为17.41 g·kg^(–1)、1.09 g·kg^(–1)和1.40 g·kg^(–1),土层和植被类型对土壤SOC、TN、TP均有影响,不同植被类型土壤SOC、TN、TP均表现为芦苇地>盐爪爪地>白刺地>柽柳地,SOC与TN、TP含量呈显著性相关(P<0.05)。本研究样地C/N(8.90—19.73)<25,说明研究区有机质分解快,有利于P的有效性提高。在可鲁克湖-托素湖不同植被类型土壤中,土壤含水量和p H是影响SOC、TN、TP含量以及生态化学计量学特征的主要环境因子。In order to study the ecological stoichiometric characteristics of different vegetation types in the Koluk Lake-Tuosu Lake Wetland Nature Reserve,four types of vegetation in the reserve:Nitraria tangutorum V1,Tamarix chinensis V2,Kalidium foliatum V3,and Phragmites communis V4 were used as the research objects.Soil organic carbon,total nitrogen,total phosphorus content and stoichiometric characteristics were studied.The results showed that the average soil organic carbon,total nitrogen,and total phosphorus contents of the four different vegetation types were 17.41 g·kg^(–1),1.09 g·kg^(–1),and 1.40 g·kg^(–1),respectively.Soil SOC,TN,and TP were all affected.The SOC,TN,and TP of different vegetation types were in the order of reed land>salt claw land>Nitraria land>Tamarix land.SOC was significantly correlated with TN and TP content(P<0.05).The C/N(8.90-19.73)<25 of the sample plot in this study indicated that the organic matter in the study area decomposed quickly,which was beneficial to the improvement of the effectiveness of P.In the soil of different vegetation types in the Koluk Lake-Tuosu Lake,the soil water content and pH were the main environmental factors that affected the SOC,TN,and TP content and ecological stoichiometric characteristics.

关 键 词：湿地 植被类型 土壤SOC 生态化学计量学 

分 类 号：S154.1[农业科学—土壤学]