Arid
DOI10.1002/ece3.2710
Effects of soil C:N:P stoichiometry on biomass allocation in the alpine and arid steppe systems
Wang, Xiaodan; Ma, Xingxing; Yan, Yan
通讯作者Wang, Xiaodan
来源期刊ECOLOGY AND EVOLUTION
ISSN2045-7758
出版年2017
卷号7期号:5页码:1354-1362
英文摘要

Soil nutrients strongly influence biomass allocation. However, few studies have examined patterns induced by soil C:N:P stoichiometry in alpine and arid ecosystems. Samples were collected from 44 sites with similar elevation along the 220-km transect at spatial intervals of 5km along the northern Tibetan Plateau. Aboveground biomass (AGB) levels were measured by cutting a sward in each plot. Belowground biomass (BGB) levels were collected from soil pits in a block of 1mx1m in actual root depth. We observed significant decreases in AGB and BGB levels but increases in the BGB:AGB ratio with increases in latitude. Although soil is characterized by structural complexity and spatial heterogeneity, we observed remarkably consistent C:N:P ratios within the cryic aridisols. We observed significant nonlinear relationships between the soil N:P and BGB:AGB ratios. The critical N:P ratio in soils was measured at approximately 2.0, above which the probability of BGB:AGB response to nutrient availability is small. These findings serve as interesting contributions to the global data pool on arid plant stoichiometry, given the previously limited knowledge regarding high-altitude regions.


英文关键词biomass allocation soil stoichiometry soil-plant interaction Tibetan Plateau
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000395012000004
WOS关键词C-N-P ; NORTHERN TIBETAN PLATEAU ; NET PRIMARY PRODUCTION ; BELOW-GROUND BIOMASS ; NUTRIENT LIMITATION ; BIOLOGICAL STOICHIOMETRY ; PHOSPHORUS-NUTRITION ; TERRESTRIAL PLANTS ; GLOBAL PATTERNS ; USE EFFICIENCY
WOS类目Ecology ; Evolutionary Biology
WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198491
作者单位Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China
推荐引用方式
GB/T 7714
Wang, Xiaodan,Ma, Xingxing,Yan, Yan. Effects of soil C:N:P stoichiometry on biomass allocation in the alpine and arid steppe systems[J],2017,7(5):1354-1362.
APA Wang, Xiaodan,Ma, Xingxing,&Yan, Yan.(2017).Effects of soil C:N:P stoichiometry on biomass allocation in the alpine and arid steppe systems.ECOLOGY AND EVOLUTION,7(5),1354-1362.
MLA Wang, Xiaodan,et al."Effects of soil C:N:P stoichiometry on biomass allocation in the alpine and arid steppe systems".ECOLOGY AND EVOLUTION 7.5(2017):1354-1362.
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