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, HM; Sun, J; Li, WP; Wu, JB; Chen, YJ; Liu, WH
2016
Source PublicationJOURNAL OF ARID LAND
ISSN1674-6767
Volume8Issue:6Pages:881-889
AbstractImproving 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.
SubtypeJournal
Keywordbelowground biomass soil organic carbon soil nitrogen and phosphorus climate factor alpine meadow Tibetan Plateau
Subject AreaEnvironmental Sciences & Ecology
WOS Subject ExtendedEnvironmental Sciences
WOS KeywordORGANIC-CARBON ; INCREASED PRECIPITATION ; GRASSLAND DEGRADATION ; ELEVATED-TEMPERATURE ; NITROGEN ; ECOSYSTEM ; IMPACT ; POOLS ; DECOMPOSITION ; DYNAMICS
Indexed BySCI
Language英语
WOS IDWOS:000386126200006
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44152
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Wang, HM,Sun, J,Li, WP,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, HM,Sun, J,Li, WP,Wu, JB,Chen, YJ,&Liu, WH.(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, HM,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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