模拟增温和氮素添加对高寒草地植物群落的影响  

Effect of Simulated Global Warming and Nitrogen Addition on Alpine Grassland Plant Communities

作　　者：温小成[1] 芦光新[1] 

机构地区：[1]青海大学农牧学院,青海西宁810016

出　　处：《草业与畜牧》2015年第2期38-43,共6页Pruataculture & Animal Husbandry

基　　金：教育部长江学者和创新团队发展计划"三江源生态演变与环境保护"(TRTB074)资助

摘　　要：为研究温度升高和氮素添加对高寒草地植物群落生长的影响,通过模拟增温和添加不同形态及配比氮素的方法,在玉树珍秦乡高寒草地生态系统野外试验观测站进行了短期观测。研究结果表明:对高寒草地植物群落高度和地上生物量鲜重而言,增温(A1)与不增温(A2)处理之间存在显著差异(P<0.05);添加氮素会增加草地植物群落高度和地上生物量鲜重,且显著差异(P<0.05);但添加不同形态及配比的氮素,对高寒草地植物群落高度和地上生物量鲜重没有明显的影响。增温和氮素添加的交互效应对高寒草地植物群落高度和地上生物量鲜重有一定的影响。For the study of temperature and nitrogen addition on the growth of alpine grassland plant communities,By simulating warming and adding different nitrogen forms and ratio method,Jane Qin Township in Yushu alpine grassland ecosystem field observation stations were short-term observation.The results showed that：alpine grassland communities height and fresh weight of aboveground biomass,the warming（A1） and notwarming（A2） there were significant differences（P〈0.05） between treatment;Adding nitrogen to increase the height of grassland communities and aboveground biomass fresh weight, and significant differences（P〈0.05）; but adding different forms and N ratio of the height of alpine grassland plant communities and aboveground biomass fresh weight did not significantly impact. Warming and interactive effects of nitrogen added to the alpine grassland communities height and fresh weight of aboveground biomass has some influence.

关 键 词：高寒草地 模拟增温 氮素添加 群落高度 地上生物量鲜重 

分 类 号：S812.4[农业科学—草业科学]