查干湖湿地不同类型植被土壤碳氮磷含量及其生态化学计量比特征  

Content and Ecological Stoichiometry Characteristics of Carbon,Nitrogen and Phosphorus in Soil with Different Types of Vegetation in Wetland of Chagan Lake

作　　者：姜珊 曲赢 郭星池 吴彭冰 刘骞 田宇鑫 解雨欣 Jiang Shan;Qu Ying;Guo Xingchi;Wu Pengbing;Liu Qian;Tian Yuxin;Xie Yuxin(College of Landscape Architecture,Changchun University,Changchun 130022,China)

机构地区：[1]长春大学园林学院,吉林长春130022

出　　处：《山东农业科学》2024年第12期86-91,共6页Shandong Agricultural Sciences

基　　金：吉林省科技厅自然科学基金面上项目(20240101037JC);长春大学攀登计划项目(ZKP202202)。

摘　　要：地处松嫩平原盐碱土区内的查干湖湿地,因其独特的土壤环境而形成特殊的生态系统。为探明该区域湿地土壤碳、氮、磷含量及其生态化学计量学特征,本研究分析了不同类型植被(碱蓬、水稗、芦苇+香蒲(以下简称芦蒲)、芦苇和芦苇+苔藓(以下简称芦苔))覆盖下土壤有机碳(SOC)、全氮(TN)、全磷(TP)含量及其生态化学计量比特征。结果表明:查干湖湿地0~20 cm土层土壤SOC、TN、TP含量均显著大于20~40 cm土层,不同类型植被覆盖下土壤SOC、TP含量及表层TN含量大多差异显著,芦苇覆盖下的土壤SOC含量最高,碱蓬覆盖下的土壤TN含量及水稗覆盖下的土壤TP含量最高。0~20 cm土层,5种类型植被覆盖下土壤的C/N、C/P、N/P值范围分别为183.34~2066.08、57.99~482.73、0.13~0.85;20~40 cm土层,C/N、C/P、N/P值范围分别为83.34~2265.20、17.77~437.22、0.13~0.25。芦苇覆盖下不同土层土壤的C/N、C/P值及碱蓬覆盖下的N/P值表现为最大。相关性分析结果显示,C/N与土壤SOC含量呈极显著正相关;C/P与土壤SOC含量和C/N呈极显著正相关;N/P与土壤TN含量呈极显著正相关。本研究结果可为查干湖湿地生态系统的恢复和管理提供理论参考。The Chagan Lake wetland,which is located in the saline⁃alkali soil area of the Songnen Plain,has formed a special ecosystem due to its unique soil environment.In order to investigate the soil car⁃bon,nitrogen and phosphorus(C,N,P)contents and ecological stoichiometry characteristics of the saline⁃al⁃kali wetland soil,the soil organic carbon(SOC),total nitrogen(TN)and total phosphorus(TP)contents and their ecological stoichiometry ratios under different types of vegetation(Suaeda glauca,Echinochloa phyl⁃lopogon,Phragmites communism+Typha orientalis,Phragmites communism,and Phragmites communism+Bryophyta)were analyzed.The results showed that the contents of SOC,TN and TP in 0~20⁃cm soil layer were significantly higher than those in 20~40⁃cm soil layer.The coverage of different types of vegetation most had significant impacts on the soil SOC and TP contents and TN content in the surface layer.The soil SOC content under P.australis coverage,TN content under S.glauca coverage and TP content under E.phyllo⁃pogon coverage were the highest.The range of C/N,C/P and N/P values in 0~20⁃cm soil layer were 183.34~2 066.08,57.99~482.73 and 0.13~0.85, respectively, which were 83.34~2 265.20、17.77~437.22、0.13~0.25 respectively in 20~40⁃cm soil layer under the coverage of the five types of vegetation. The C/ N and C/ Pvalues under P. australis coverage and the N/ P value under S. glauca coverage in different soil layers were thelargest. The correlation analysis showed that C/ N was significantly positively correlated with SOC content, C/ Pwas significantly positively correlated with SOC content and C/ N, and N/ P was significantly positively correla⁃ted with TN content. The results of this study could provide references for the restoration and management ofChagan Lake wetland ecosystem.

关 键 词：盐碱湿地 碳氮磷 生态化学计量学 植被覆盖 

分 类 号：S158[农业科学—土壤学]