气候变化领域集成服务门户(CCPortal): Extreme rainfall events can alter inter-annual biomass responses to water and N enrichment

CCPortal

DOI	10.5194/bg-10-8129-2013
	Extreme rainfall events can alter inter-annual biomass responses to water and N enrichment
	Kong, D. L.; Lu, X. T.; Jiang, L. L.; Wu, H. F.; Miao, Y.; Kardol, P.
通讯作者	Kong, DL (通讯作者)
发表日期	2013
ISSN	1726-4170
EISSN	1726-4189
起始页码	8129
结束页码	8138
卷号	10 期号:12
英文摘要	Water availability has profound effects on plant growth and productivity in temperate and semiarid grasslands. However, it remains unclear how variation of inter-annual precipitation by extreme rainfall events will alter the aboveground and belowground responses of plants, and how these responses may be contingent on N availability. In this study, we examined the interactive effects of inter-annual precipitation variation and N addition on aboveground and live fine root biomass of a semiarid grassland in northern China for two consecutive years (2007 and 2008). Inter-annual variation in precipitation resulting mainly from the occurrence of extreme rainfall events in 2008 significantly affected above-and belowground plant biomass responses to water addition. In addition, variation of inter-annual precipitation by this extreme rainfall event suppressed plant responses to nitrogen addition and reduced the interaction effects between water and nitrogen addition. These effects of inter-annual precipitation fluctuation could be attributed to the negative influence of the extreme rainfall event on soil N and water availability, ultimately reducing plant rainfall use efficiency and nitrogen use efficiency. In conclusion, our results suggest ecosystem responses to water and N enrichment could be altered by inter-annual variation of precipitation regime caused by the naturally occurring extreme rainfall events.
关键词	TERRESTRIAL ECOSYSTEMS USE EFFICIENCY CLIMATE-CHANGE GRASSLAND PRODUCTIVITY NITROGEN LIMITATION PRECIPITATION SOIL TEMPERATURE VARIABILITY PATTERNS
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Geology
WOS类目	Ecology ; Geosciences, Multidisciplinary
WOS记录号	WOS:000329054600021
来源期刊	BIOGEOSCIENCES
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258177
推荐引用方式 GB/T 7714	Kong, D. L.,Lu, X. T.,Jiang, L. L.,et al. Extreme rainfall events can alter inter-annual biomass responses to water and N enrichment[J]. 中国科学院青藏高原研究所,2013,10(12).
APA	Kong, D. L.,Lu, X. T.,Jiang, L. L.,Wu, H. F.,Miao, Y.,&Kardol, P..(2013).Extreme rainfall events can alter inter-annual biomass responses to water and N enrichment.BIOGEOSCIENCES,10(12).
MLA	Kong, D. L.,et al."Extreme rainfall events can alter inter-annual biomass responses to water and N enrichment".BIOGEOSCIENCES 10.12(2013).