干旱区生态环境知识资源中心(Arid): Responses in gross primary production of Stipa krylovii and Allium polyrhizum to a temporal rainfall in a temperate grassland of Inner Mongolia, China

Arid

DOI	10.1007/s40333-019-0127-1
	Responses in gross primary production of Stipa krylovii and Allium polyrhizum to a temporal rainfall in a temperate grassland of Inner Mongolia, China
	Hu, Xiaoxing 1; Hirota, Mitsuru 2; Wuyunna 3; Kawada, Kiyokazu 2; Li, Hao 1; Meng, Shikang 1; Tamura, Kenji 2; Kamijo, Takashi 1
通讯作者	Kamijo, Takashi
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2019
卷号	11 期号:6 页码:824-836
英文摘要	In the arid and semi-arid areas of China, rainfall and drought affect the growth and photosynthetic activities of plants. Gross primary productivity (GPP) is one of the most important indices that measure the photosynthetic ability of plants. This paper focused on the GPP of two representative grassland species (Stipa krylovii and Allium polyrhizum) to demonstrate the effect of a temporal rainfall on the two species. Our research was conducted in a temperate grassland in New Barag Right Banner, Hulun Buir City, Inner Mongolia Autonomous Region of China, in a dry year 2015. We measured net ecosystem productivity (NEP) and ecosystem respiration flux (ER) using a transparent chamber system and monitored the photosynthetically active radiation (PAR), air and soil temperature and humidity simultaneously. Based on the measured values of NEP and ER, we calculated the GPP of the two species before and after the rainfall. The saturated GPP per aboveground biomass (GPP(AGB)) of A. polyrhizum remarkably increased from 0.033 (+/- 0.018) to 0.185 (+/- 0.055) mu mol CO2/(gdw center dot s) by 5.6-fold and that of S. krylovii decreased from 0.068 (+/- 0.021) to 0.034 (+/- 0.011) mu mol CO2(gdw center dot s) by 0.5-fold on the 1(st) and 2(nd) d after a 9.1 mm rainfall event compared to the values before the rainfall at low temperatures below 35 degrees C. However, on the 1(st) and 2(nd) d after the rainfall, both of the saturated GPP(AGB) values of S. krylovii and A. polyrhizum were significantly lower at high temperatures above 35 degrees C (0.018 (+/- 0.007) and 0.110 (+/- 0.061) mu mol CO2/(gdw center dot s), respectively) than at low temperatures below 35 degrees C (0.034 (+/- 0.011) and 0.185 (+/- 0.055) mu mol CO2/(gdw center dot s), respectively). The results showed that the GPP responses to the temporal rainfall differed between S. krylovii and A. polyrhizum and strongly negative influenced by temperature. The temporal rainfall seems to be more effective on the GPP of A. polyrhizum than S. krylovii. These differences might be related to the different physiological and structural features, the coexistence of the species and their species-specific survival strategies.
英文关键词	temperate grassland gross primary productivity temporal rainfall survival strategy dry year drought
类型	Article
语种	英语
国家	Japan ; Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000495675600001
WOS关键词	NET PRIMARY PRODUCTIVITY ; CARBON-DIOXIDE EXCHANGE ; CHIHUAHUAN DESERT ; PRECIPITATION ; STEPPE ; WATER ; RESPIRATION ; DYNAMICS ; DROUGHT ; PULSES
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-11-12
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310829
作者单位	1.Univ Tsukuba, Grad Sch Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan; 2.Univ Tsukuba, Fac Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan; 3.Dalian Minzu Univ, Coll Environm & Resources, Dalian 116600, Peoples R China
推荐引用方式 GB/T 7714	Hu, Xiaoxing,Hirota, Mitsuru,Wuyunna,et al. Responses in gross primary production of Stipa krylovii and Allium polyrhizum to a temporal rainfall in a temperate grassland of Inner Mongolia, China[J],2019,11(6):824-836.
APA	Hu, Xiaoxing.,Hirota, Mitsuru.,Wuyunna.,Kawada, Kiyokazu.,Li, Hao.,...&Kamijo, Takashi.(2019).Responses in gross primary production of Stipa krylovii and Allium polyrhizum to a temporal rainfall in a temperate grassland of Inner Mongolia, China.JOURNAL OF ARID LAND,11(6),824-836.
MLA	Hu, Xiaoxing,et al."Responses in gross primary production of Stipa krylovii and Allium polyrhizum to a temporal rainfall in a temperate grassland of Inner Mongolia, China".JOURNAL OF ARID LAND 11.6(2019):824-836.