草业学报Issue(3)：38-47,10.DOI:10.11686/cyxb20150304
若尔盖高寒退化湿地土壤碳氮磷比及相关性分析
Analysis of soil carbon,nitrogen and phosphorus in degraded alpine wetland,Zoige, southwest China
摘要
Abstract
Based on their vegetation characteristics,5 degraded alpine wetland plots were selected to investigate grassland degradation processes in the Huahu Scenic Area,Zoige County,in Southwest China.Pika (Ochotona curzoniae)burrow densities,soil carbon (C),nitrogen (N)and phosphorus (P)were measured (0 -10 cm depth).The mean soil C and soil N content ranged from 3.7%-4.9% and 0.38%-0.56% respectively,but there were no differences among the plots.However,soil P was significantly higher in plots on the flat areas compared with plots on sloping ground.The soil C/N,C/P and N/P ratios were 11.0,62.3 and 5.7,respec-tively.Carbon,N and P all decreased with increasing soil depth as did the C/N and N/P ratio.The C/P ratio was positively correlated with pika burrow density.The study was helpful for understanding the grassland nu-trient cycling processes and for identifying pika control and wetland management strategies.关键词
若尔盖高寒湿地/土壤碳氮磷比/生态化学计量/鼠类密度/草地管理Key words
Zoige alpine wetland/soil C∶N∶P/ecological stoichiometry/density of rodent/grassland man-agement引用本文复制引用
青烨,孙飞达,李勇,陈文业,李昕..若尔盖高寒退化湿地土壤碳氮磷比及相关性分析[J].草业学报,2015,(3):38-47,10.基金项目
国家自然科学基金项目（31100338），教育部“春晖计划”项目（Z2010091）和四川农业大学“双支计划”项目资助。 （）
