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Small rainfall pulses affected leaf photosynthesis rather than biomass production of dominant species in semiarid grassland community on Loess Plateau of China
Xiong, Peifeng1; Shu, Jiali1; Zhang, He1; Jia, Zhao1; Song, Jinxi1,2; Palta, Jairo A.3,4,5; Xu, Bingcheng1,2
2017
Source PublicationFUNCTIONAL PLANT BIOLOGY
ISSN1445-4408
Volume44Issue:12Pages:1229-1242
Corresponding AuthorXu, Bingcheng(bcxu@ms.iswc.ac.cn)
AbstractIn the semiarid region Loess Plateau of China, rainfall events, typically characterised as pulses, affect photosynthesis and plant community characteristics. The response of dominant species and grassland community to rainfall pulses was evaluated through a simulation experiment with five pulse sizes (0, 5, 10, 20 and 30 mm) in the semiarid Loess Plateau of China in June and August of 2013. The study was conducted in a natural grassland community dominated by Bothrichloa ischaemum (L.) Keng and Lespedeza davurica (Lax.) Schindl. In June, the leaf photosynthetic rate (P-n), transpiration rate, stomatal conductance, intercellular CO2 concentration of both species and soil water content increased rapidly after rainfall pulses. B. ischaemum was more sensitive to the pulses and responded significantly to 5 mm rainfall, whereas L. davurica responded significantly only to rainfall events greater than 5 mm. The magnitude and duration of the photosynthetic responses of the two species to rainfall pulse gradually increased with rainfall sizes. The maximum P-n of B. ischaemum appeared on the third day under 30 mm rainfall, whereas for L. davurica it appeared on the second day under 20 mm rainfall. Soil water storage (0-50 cm) was significantly affected under 10, 20 and 30 mm rainfall. Only large pulses (20, 30 mm) increased community biomass production by 21.3 and 27.6% respectively. In August, the effect of rainfall on the maximum P-n and community characteristics was generally not significant. Rainfall pulses affected leaf photosynthesis because of a complex interplay between rainfall size, species and season, but might not induce a positive community-level feedback under changing rainfall patterns.
Keywordbiomass production Bothrichloa ischaemum Lespedeza davurica photosynthesis rainfall pulse soil moisture
DOI10.1071/FP17040
WOS KeywordEXTREME PRECIPITATION ; TERRESTRIAL ECOSYSTEMS ; MONSOON PRECIPITATION ; TEMPERATE GRASSLAND ; PLANT-RESPONSES ; ARID ECOSYSTEMS ; SONORAN DESERT ; GAS-EXCHANGE ; WATER PULSES ; SOIL TEXTURE
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of China[41071339] ; Natural Science Foundation of China[41371509] ; Hundred Talents Project of the Chinese Academy of Sciences[A315021406]
Funding OrganizationNatural Science Foundation of China ; Hundred Talents Project of the Chinese Academy of Sciences
WOS Research AreaPlant Sciences
WOS SubjectPlant Sciences
WOS IDWOS:000414666800008
PublisherCSIRO PUBLISHING
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/61155
Collection中国科学院地理科学与资源研究所
Corresponding AuthorXu, Bingcheng
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
3.Univ Western Australia, Inst Agr, LB 5005, Perth, WA 6001, Australia
4.Sch Agr & Environm, LB 5005, Perth, WA 6001, Australia
5.CSIRO Agr 7 Food, Private Bag 5, Wembley, WA 6913, Australia
Recommended Citation
GB/T 7714
Xiong, Peifeng,Shu, Jiali,Zhang, He,et al. Small rainfall pulses affected leaf photosynthesis rather than biomass production of dominant species in semiarid grassland community on Loess Plateau of China[J]. FUNCTIONAL PLANT BIOLOGY,2017,44(12):1229-1242.
APA Xiong, Peifeng.,Shu, Jiali.,Zhang, He.,Jia, Zhao.,Song, Jinxi.,...&Xu, Bingcheng.(2017).Small rainfall pulses affected leaf photosynthesis rather than biomass production of dominant species in semiarid grassland community on Loess Plateau of China.FUNCTIONAL PLANT BIOLOGY,44(12),1229-1242.
MLA Xiong, Peifeng,et al."Small rainfall pulses affected leaf photosynthesis rather than biomass production of dominant species in semiarid grassland community on Loess Plateau of China".FUNCTIONAL PLANT BIOLOGY 44.12(2017):1229-1242.
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