干旱区生态环境知识资源中心(Arid): Effect of rainfall on Artemisia ordosica Krasch anual net primary production and allocation in sandy land in China

Arid

DOI	10.1016/j.ecolind.2021.108023
	Effect of rainfall on Artemisia ordosica Krasch anual net primary production and allocation in sandy land in China
	Wang Chunyuan; Yu Minghan; Ding Guodong; Gao Guanglei; Zhang Linlin
通讯作者	Yu, MH ; Ding, GD (corresponding author), Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China. ; Yu, MH ; Ding, GD (corresponding author), Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China.
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2021
卷号	130
英文摘要	The adjustment of aboveground biomass allocation is an important part of plant growth adaptation strategies. Due to global climate change, rising temperatures are causing changes in global air circulation patterns. Therefore, more extreme drought and flood events will happen in the future. Xerophytic shrubs are the main vegetation types of dryland ecosystems and are expected to be sensitive to changes in rainfall, which would inevitably affect the stability of the ecosystem. We conducted field experiments to simulate the effects of rainfall on Artemisia ordosica Krasch annual net primary productivity (ANPP) and allocation in the Mu Us Desert in northern China. This study examined six different rainfall levels: natural rainfall level (control); natural rainfall level reduced by 30%, 50%, and 70% (-30%, -50%, -70% treatment); and natural rainfall level increased by 30% and 50% (+30%, +50% treatment). The plant height, cover/volume, size/number of vegetative and reproductive twigs, and dry weight of vegetative and reproductive twigs were measured. The results showed the following: (1) Twig size and number are more sensitive to rainfall changes than the cover/volume of this species. (2) Rainfall has a significant influence on shrub ANPP (maximum ANPP was reached at + 30% treatment, and the minimum value was reached at -70% treatment). (3) With the increase or decrease of rainfall, A. ordosica number of twigs increased, and the length became shorter. (4) Rainfall had a significant effect on ANPP allocation (vegetative growth and reproductive growth). With the increase or decrease of rainfall, vegetative growth and reproductive growth of A. ordosica showed a trade-off strategy. Under the condition of adding rainfall, vegetative twig ANPP increased significantly. Under severe drought stress (-70% treatment), ANPP decreased significantly. Adding or subtracting rainfall caused a significant decrease in the vegetative twig ANPP ratio and a significant increase in the reproduction twig ANPP ratio. Our results highlight the sensitivity of twig size and number as indicators of shrub production estimation and the mechanism underpinning desert shrub ANPP response to global environmental changes.
英文关键词	Vegetative and reproductive growth Shrub current-year twig Twig size and number Shrub cover/volume Biomass ANPP Trade-off Rainfall change
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000693399700003
WOS关键词	CLIMATE-CHANGE ; BIOMASS ALLOCATION ; LARREA-TRIDENTATA ; DESERT GRASSLAND ; 5 TREE ; WATER ; GROWTH ; PRECIPITATION ; PLANTS ; RESISTANCE
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362992
作者单位	[Wang Chunyuan; Yu Minghan; Ding Guodong; Gao Guanglei] Beijing Forestry Univ, Sch Soil & Water Conservat, Yanchi Res Stn, Beijing 100083, Peoples R China; [Wang Chunyuan; Yu Minghan; Ding Guodong; Gao Guanglei; Zhang Linlin] Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Wang Chunyuan,Yu Minghan,Ding Guodong,et al. Effect of rainfall on Artemisia ordosica Krasch anual net primary production and allocation in sandy land in China[J]. 北京林业大学,2021,130.
APA	Wang Chunyuan,Yu Minghan,Ding Guodong,Gao Guanglei,&Zhang Linlin.(2021).Effect of rainfall on Artemisia ordosica Krasch anual net primary production and allocation in sandy land in China.ECOLOGICAL INDICATORS,130.
MLA	Wang Chunyuan,et al."Effect of rainfall on Artemisia ordosica Krasch anual net primary production and allocation in sandy land in China".ECOLOGICAL INDICATORS 130(2021).