Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers, Tibetan Plateau of China | |
Wang Haiming1; Sun Jian2; Li Weipeng3; Wu Jianbo1; Chen Youjun4; Liu Wenhui5 | |
刊名 | JOURNAL OF ARID LAND |
2016-12-01 | |
卷号 | 8期号:6页码:881-889 |
关键词 | belowground biomass soil organic carbon soil nitrogen and phosphorus climate factor alpine meadow Tibetan Plateau |
ISSN号 | 1674-6767 |
通讯作者 | Sun Jian |
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. |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
类目[WOS] | Environmental Sciences |
研究领域[WOS] | Environmental Sciences & Ecology |
关键词[WOS] | ORGANIC-CARBON ; INCREASED PRECIPITATION ; GRASSLAND DEGRADATION ; ELEVATED-TEMPERATURE ; NITROGEN ; ECOSYSTEM ; IMPACT ; POOLS ; DECOMPOSITION ; DYNAMICS |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000386126200006 |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/18132] |
专题 | 成都山地灾害与环境研究所_山区发展研究中心 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Synth Res Ctr Chinese Ecosyst Res Network, Key Lab Ecosyst Network Observat & Modelling, Beijing 100101, Peoples R China 3.China West Normal Univ, Land & Resource Coll, Nanchong 637002, Peoples R China 4.Southwest Univ Nationalities Sichuan, Inst Qinghai Tibetan Plateau, Chengdu 610041, Peoples R China 5.Qinghai Acad Anim Sci & Vet Med, Xining 810016, Peoples R China |
推荐引用方式 GB/T 7714 | Wang Haiming,Sun Jian,Li Weipeng,et al. Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers, Tibetan Plateau of China[J]. JOURNAL OF ARID LAND,2016,8(6):881-889. |
APA | Wang Haiming,Sun Jian,Li Weipeng,Wu Jianbo,Chen Youjun,&Liu Wenhui.(2016).Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers, Tibetan Plateau of China.JOURNAL OF ARID LAND,8(6),881-889. |
MLA | Wang Haiming,et al."Effects of soil nutrients and climate factors on belowground biomass in an alpine meadow in the source region of the Yangtze-Yellow rivers, Tibetan Plateau of China".JOURNAL OF ARID LAND 8.6(2016):881-889. |
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