Precipitation consistently promotes, but temperature inversely drives, biomass production in temperate vs. alpine grasslands

doi:10.1016/j.agrformet.2022.109277

	Precipitation consistently promotes, but temperature inversely drives, biomass production in temperate vs. alpine grasslands
	Wu, Wenjuan 1; Sun, Ruojun 1; Liu, Leren 1; Liu, Xiaodi 1; Yu, Hongying 1; Ma, Quanhui 1; Qi, Miao 1; Li, Lang 1; Li, Yibo 1; Zhou, Guangsheng 2; Xu, Zhenzhu1
	2023
发表期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
卷号	329
摘要	Comparisons of vegetation production between temperate and alpine grasslands are not well studied, and the understanding of the underlying mechanisms is still incomplete. To address this issue, we selected the Inner Mongolia and Tibet regions to conduct large-transect surveys for temperate grassland (TG) and alpine grassland (AG), respectively, in China, to reveal the universal and differential mechanisms of above-and belowground biomass production (GB, AGB and BGB) and precipitation use efficiencies (PUE) in the two grasslands. The relative importance of climatic factors on biomass and PUE is greater than that of soil and biological factors. Elevated mean annual precipitation (MAP) consistently increased GB in both TG and AG. Increased mean annual temperature (MAT) reduced GB by weakening the soil nutrient status in TG, whereas it increased GB by improving the soil nutrient status in AG. MAP promoted more AGB than BGB in TG, whereas MAT affected BGB more than AGB in AG. When the multicomponent heterogeneity of other factors in grasslands was eliminated, the effect of MAP on GB remained significant for both TG and AG. After removing the effect of multifactorial het-erogeneity, however, the significant effect of MAP on PUE of the two grasslands was largely enhanced. From these results, we can conclude that climatic factors do not always exert identical effects on different grasslands. In particular, highlighting the divergent mechanisms of biomass production and precipitation use efficiency between temperate and alpine grasslands can improve the understanding of the carbon sink and hydraulic sensitivity of various grasslands.
关键词	Alpine grassland Belowground part Climatic factor Differential mechanism Temperate grassland
学科领域	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
DOI	10.1016/j.agrformet.2022.109277
收录类别	SCI
语种	英语
WOS关键词	NET PRIMARY PRODUCTIVITY ; ABOVEGROUND BIOMASS ; USE EFFICIENCY ; TERRESTRIAL ECOSYSTEMS ; MICROBIAL COMMUNITY ; NITROGEN DEPOSITION ; PLANT DIVERSITY ; CLIMATE ; METAANALYSIS ; RESPONSES
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000899205600001
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1873-2240
资助机构	Second Tibetan Plateau Scientific Expedition and Research (STEP) program ; Strategic Priority Research Program of Chinese Academy of Sciences ; [2019QZKK0106] ; [XDA26010103]
作者邮箱	xuzz@ibcas.ac.cn
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/29145
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Meteorol Adm, Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Wu, Wenjuan,Sun, Ruojun,Liu, Leren,et al. Precipitation consistently promotes, but temperature inversely drives, biomass production in temperate vs. alpine grasslands[J]. AGRICULTURAL AND FOREST METEOROLOGY,2023,329.
APA	Wu, Wenjuan.,Sun, Ruojun.,Liu, Leren.,Liu, Xiaodi.,Yu, Hongying.,...&Xu, Zhenzhu.(2023).Precipitation consistently promotes, but temperature inversely drives, biomass production in temperate vs. alpine grasslands.AGRICULTURAL AND FOREST METEOROLOGY,329.
MLA	Wu, Wenjuan,et al."Precipitation consistently promotes, but temperature inversely drives, biomass production in temperate vs. alpine grasslands".AGRICULTURAL AND FOREST METEOROLOGY 329(2023).

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