effectsofsoilnutrientsandclimatefactorsonbelowgroundbiomassinanalpinemeadowinthesourceregionoftheyangtzeyellowriverstibetanplateauofchina

	effectsofsoilnutrientsandclimatefactorsonbelowgroundbiomassinanalpinemeadowinthesourceregionoftheyangtzeyellowriverstibetanplateauofchina
	Wang Haiming 3; Sun Jian 4; Li Weipeng 5; Wu Jianbo 3; Chen Youjun 1; Liu Wenhui 2
刊名	journalofaridland
	2016
卷号	8 期号:6 页码:881
ISSN号	1674-6767
英文摘要	Improving our knowledge of the effects of environmental factors(e.g. soil conditions, precipitation and temperature) on belowground biomass in an alpine grassland is essential for understanding the consequences of carbon storage in this biome. The object of this study is to investigate the relative importance of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze and Yellow rivers, Tibetan Plateau. Soil organic carbon(SOC), total nitrogen(TN) and total phosphorous(TP) contents and belowground biomass were measured at 22 sampling sites across an alpine meadow on the Tibetan Plateau. We analyzed the data by using the redundancy analysis to determine the main environmental factors affecting the belowground biomass and the contribution of each factor. The results showed that SOC, TN and TP were the main factors that influenced belowground biomass, and the contribution of SOC, TN and TP on biomass was in the range of 47.87%-72.06% at soil depths of 0-30 cm. Moreover, the combined contribution of annual mean temperature(AMT) and mean annual precipitation(MAP) on belowground biomass ranged from 0.92% to 4.10%. A potential mechanism for the differences in belowground biomass was caused by the variations in soil nitrogen and phosphorous, which were coupled with SOC. A significant correlation was observed between MAP and soil nutrients(SOC, TN and TP) at the soil depth of 0-10 cm(P<0.05). We concluded that precipitation is an important driving force in regulating ecosystem functioning as reflected in variations of soil nutrients(SOC, TN and TP) and dynamics of belowground biomass in alpine grassland ecosystems.
语种	英语
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/106777]
专题	中国科学院地理科学与资源研究所
作者单位	1.西南民族大学 2.Qinghai Academy of Animal Science and Veterinary Medicine 3.中国科学院成都山地灾害与环境研究所 4.中国科学院地理科学与资源研究所 5.西华师范大学
推荐引用方式 GB/T 7714	Wang Haiming,Sun Jian,Li Weipeng,et al. effectsofsoilnutrientsandclimatefactorsonbelowgroundbiomassinanalpinemeadowinthesourceregionoftheyangtzeyellowriverstibetanplateauofchina[J]. journalofaridland,2016,8(6):881.
APA	Wang Haiming,Sun Jian,Li Weipeng,Wu Jianbo,Chen Youjun,&Liu Wenhui.(2016).effectsofsoilnutrientsandclimatefactorsonbelowgroundbiomassinanalpinemeadowinthesourceregionoftheyangtzeyellowriverstibetanplateauofchina.journalofaridland,8(6),881.
MLA	Wang Haiming,et al."effectsofsoilnutrientsandclimatefactorsonbelowgroundbiomassinanalpinemeadowinthesourceregionoftheyangtzeyellowriverstibetanplateauofchina".journalofaridland 8.6(2016):881.