Arid
DOI10.3389/fpls.2016.00663
Eco-Physiological Responses of Dominant Species to Watering in a Natural Grassland Community on the Semi-Arid Loess Plateau of China
Niu, Furong1; Duan, Dongping1; Chen, Ji1; Xiong, Peifeng1; Zhang, He1; Wang, Zhi1,2,3; Xu, Bingcheng1,2,3
通讯作者Xu, Bingcheng
来源期刊FRONTIERS IN PLANT SCIENCE
ISSN1664-462X
出版年2016
卷号7
英文摘要

Altered precipitation regimes significantly affect ecosystem structure and function in arid and semi-arid regions. In order to investigate effects of precipitation changes on natural grassland community in the semi-arid Loess Plateau, the current research examined eco-physiological characteristics of two co-dominant species (i.e., Bothriochloa ischaemum and Lespedeza davurica) and community composition following two watering instances (i.e., precipitation pulses, July and August, 2011, respectively) in a natural grassland community. Results showed that the photosynthetic rate, transpiration rate, stomatal conductance and intercellular CO2 concentration rapidly increased on the first to third day following watering in both species, and both months. Under watering treatments, the maximum net photosynthetic rates appeared on the second to third day after watering, which increased 30-80% in B. ischaemum and 40-50% in L. davurica compared with non-watering treatments, respectively. Leaf water use efficiency kept stable or initially decreased in both species under watering treatments. Watering in July produced more promoting effects on grass photosynthesis than in August, particularly in B. ischaemum. Community above-ground biomass at the end of the growing season increased after watering, although no significant changes in species diversity were observed. Our results indicated that timing and magnitude of watering could significantly affect plant eco-physiological processes, and there were species-specific responses in B. ischaemum and L. davurica. Pulsed watering increased community productivity, while did not significantly alter community composition after one growing season. The outcomes of this study highlight eco-physiological traits in dominant species may playing important roles in reshaping community composition under altered precipitation regimes.


英文关键词Bothriochloa ischaemum Lespedeza davulica photosynthetic parameters community biomass precipitation regime
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000375976800001
WOS关键词ASIAN DESERT SHRUBS ; LEAF GAS-EXCHANGE ; PRECIPITATION VARIABILITY ; EXTREME PRECIPITATION ; SUMMER PRECIPITATION ; TEMPERATE GRASSLAND ; RAINFALL REGIMES ; GREAT-PLAINS ; C-4 GRASS ; PULSES
WOS类目Plant Sciences
WOS研究方向Plant Sciences
来源机构西北农林科技大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/193068
作者单位1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Peoples R China;
2.Chinese Acad Sci, Inst Soil & Water Conservat, Yangling, Peoples R China;
3.Minist Water Resources, Yangling, Peoples R China
推荐引用方式
GB/T 7714
Niu, Furong,Duan, Dongping,Chen, Ji,et al. Eco-Physiological Responses of Dominant Species to Watering in a Natural Grassland Community on the Semi-Arid Loess Plateau of China[J]. 西北农林科技大学,2016,7.
APA Niu, Furong.,Duan, Dongping.,Chen, Ji.,Xiong, Peifeng.,Zhang, He.,...&Xu, Bingcheng.(2016).Eco-Physiological Responses of Dominant Species to Watering in a Natural Grassland Community on the Semi-Arid Loess Plateau of China.FRONTIERS IN PLANT SCIENCE,7.
MLA Niu, Furong,et al."Eco-Physiological Responses of Dominant Species to Watering in a Natural Grassland Community on the Semi-Arid Loess Plateau of China".FRONTIERS IN PLANT SCIENCE 7(2016).
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