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Biomass Components and Environmental Controls in Ningxia Grasslands
Wang, KB (Wang Kai-bo)[1]; Li, JP (Li Jian-ping)[2]; Shangguan, ZP (Shangguan Zhou-ping)[3]
2012-12-30
Source PublicationJOURNAL OF INTEGRATIVE AGRICULTURE
Volume11Issue:12Pages:2079-2087
Subtype期刊论文
Abstract

Grassland plays an important role in the global carbon cycle and climate regulation. However, there are still large uncertainties in grassland carbon pool and also its role in global carbon cycle due to the lack of measured grassland biomass at regional scale or global scale with a unified survey method, particular for below-ground biomass. The present study, based on a total of 44 grassland sampling plots with 220 quadrats across Ningxia, investigated the characteristics of above-ground biomass (AGB), below-ground biomass (BGB), litter biomass (LB), total biomass (TB) and root:shoot ratios (R:S) for six predominantly grassland types, and their relationships with climatic factors. AGB, BGB, LB and TB varied markedly across different grassland types, the median value ranging from 28.2-692.6 g m(-2) for AGB, 130.4-2036.6 g m(-2) for BGB, 9.2-82.3 g m(-2) for LB, and 168.0-2681.3 g m(-2) for TB. R:S showed less variation with median values from 3.2 to 5.3 (excluding marshy meadow). The different grassland types showed similar patterns of biomass allocation, with more than 70% BOB for all types. There is evidence of strong positive effects associated with mean annual precipitation (MAP) and negative effects associated with mean annual temperature (MAT) on AGB, BGB, and LB, although both factors have the opposite effect on R:S.

KeywordGrasslands Above-ground Biomass (Agb) Below-ground Biomass (Bgb) Root:Shoot Ratios (r:s) Meanannual Precipitation (Map) Mean Annual Temperature (Mat)
Indexed BySCIE
Language英语
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10233
Collection生态环境研究室
Corresponding AuthorShangguan, ZP (Shangguan Zhou-ping)[3]
Affiliation1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075,P.R.China;
2.School of Agriculture, Ningxia University, Yinchuan 750021, P.R.China;
3.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, ChineseAcademy of Sciences, Yangling 712100, P.R.China
Recommended Citation
GB/T 7714
Wang, KB ,Li, JP ,Shangguan, ZP . Biomass Components and Environmental Controls in Ningxia Grasslands[J]. JOURNAL OF INTEGRATIVE AGRICULTURE,2012,11(12):2079-2087.
APA Wang, KB ,Li, JP ,&Shangguan, ZP .(2012).Biomass Components and Environmental Controls in Ningxia Grasslands.JOURNAL OF INTEGRATIVE AGRICULTURE,11(12),2079-2087.
MLA Wang, KB ,et al."Biomass Components and Environmental Controls in Ningxia Grasslands".JOURNAL OF INTEGRATIVE AGRICULTURE 11.12(2012):2079-2087.
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