干旱区生态环境知识资源中心(Arid): Precipitation temporal repackaging into fewer, larger storms delayed seasonal timing of peak photosynthesis in a semi-arid grassland

Arid

DOI	10.1111/1365-2435.13980
	Precipitation temporal repackaging into fewer, larger storms delayed seasonal timing of peak photosynthesis in a semi-arid grassland
	Zhang, Fangyue; Biederman, Joel A.; Pierce, Nathan A.; Potts, Daniel L.; Devine, Charles John; Hao, Yanbin; Smith, William K.
通讯作者	Zhang, FY (corresponding author), Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA. ; Zhang, FY (corresponding author), USDA ARS, Southwest Watershed Res Ctr, Tucson, AZ 85719 USA.
来源期刊	FUNCTIONAL ECOLOGY
ISSN	0269-8463
EISSN	1365-2435
出版年	2022
英文摘要	1. Against a backdrop of rising temperature, large portions of the western United States are experiencing fewer, larger and less frequent precipitation events. How such temporal 'repackaging' of precipitation alters the magnitude and timing of seasonal maximum gross primary productivity (GPP(max)) remains unknown. Addressing this knowledge gap is critical, since changes to GPP(max) magnitude and timing can impact a range of ecosystem services and management decisions. 2. Here we used a field-based precipitation manipulation experiment in a semi-arid mixed annual/perennial bunchgrass ecosystem with mean annual precipitation similar to 384 mm to investigate how temporal repackaging of a fixed total seasonal precipitation amount impacts seasonal GPP(max) and its timing. 3. We found that temporal repackaging of precipitation profoundly influenced the seasonal timing of GPP(max). Many/small precipitation events advanced the seasonal timing of GPP(max) by similar to 13 days in comparison with climatic normal precipitation. Conversely, few/large events led to deeper soil water infiltration, which delayed the timing of GPP(max) by up to 16 days in comparison with climatic normal precipitation, and altered end-of-season community composition by increasing the diversity of shallow-rooted annual plants. While GPP(max) magnitude did not differ across precipitation treatments, it was positively correlated with the abundance and biomass of deeper-rooted perennial bunchgrasses. The sensitivity of plant growth, biomass accumulation and plant life histories to the timing and magnitude of precipitation events and the resulting temporal patterns of soil moisture regulated ecosystem responses to altered precipitation patterns. 4. Our results highlight the sensitivity of semi-arid grassland ecosystem to the temporal repackaging of precipitation. We find that already-observed and model-forecasted shifts toward few/large precipitation events could drive significant delays in the timing of peak productivity for this ecosystem. Adaptive land management frameworks should consider these findings since shifts in peak ecosystem productivity would have major implications for multiple land user communities. Additional research is needed to better understand the role of climate, community composition and soil properties in mediating variability in the seasonal timing of maximum ecosystem productivity.
英文关键词	community composition maximum photosynthetic production precipitation repackaging semi-arid grasslands vegetation greenness
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000732469400001
WOS关键词	GROSS PRIMARY PRODUCTIVITY ; INTERANNUAL VARIABILITY ; ECOSYSTEM CARBON ; PLANT PHENOLOGY ; INNER-MONGOLIA ; CO2 ; WATER ; PATTERNS ; EXCHANGE ; PULSES
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374736
作者单位	[Zhang, Fangyue; Pierce, Nathan A.; Devine, Charles John; Smith, William K.] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA; [Zhang, Fangyue; Biederman, Joel A.; Pierce, Nathan A.] USDA ARS, Southwest Watershed Res Ctr, Tucson, AZ 85719 USA; [Potts, Daniel L.] SUNY Buffalo, Biol Dept, Buffalo, NY USA; [Hao, Yanbin] Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Fangyue,Biederman, Joel A.,Pierce, Nathan A.,et al. Precipitation temporal repackaging into fewer, larger storms delayed seasonal timing of peak photosynthesis in a semi-arid grassland[J],2022.
APA	Zhang, Fangyue.,Biederman, Joel A..,Pierce, Nathan A..,Potts, Daniel L..,Devine, Charles John.,...&Smith, William K..(2022).Precipitation temporal repackaging into fewer, larger storms delayed seasonal timing of peak photosynthesis in a semi-arid grassland.FUNCTIONAL ECOLOGY.
MLA	Zhang, Fangyue,et al."Precipitation temporal repackaging into fewer, larger storms delayed seasonal timing of peak photosynthesis in a semi-arid grassland".FUNCTIONAL ECOLOGY (2022).