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

	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; Hirota Mitsuru; Wuyunna; Kawada Kiyokazu; Li Hao; Meng Shikang; Tamura Kenji; Kamijo Takashi
来源期刊	Journal of Arid Land
ISSN	1674-6767
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 Roshev. and Allium polyrhizum Turcz. ex Regel) 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 (GPPAGB) of A. polyrhizum remarkably increased from 0.033 (0.018) to 0.185 (0.055) mumol CO_2/(gdw·s) by 5.6-fold and that of S. krylovii decreased from 0.068 (0.021) to 0.034 (0.011) mumol CO_2/(gdw·s) by 0.5-fold on the 1st and 2nd d after a 9.1 mm rainfall event compared to the values before the rainfall at low temperatures below 35°C. However, on the 1~(st) and 2~(nd) d after the rainfall, both of the saturated GPPAGB values of S. krylovii and A. polyrhizum were significantly lower at high temperatures above 35°C (0.018 (0.007) and 0.110 (0.061) mumol CO_2/(gdw·s), respectively) than at low temperatures below 35°C (0.034 (0.011) and 0.185 (0.055) mumol CO_2/(gdw·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
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6623008
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336217
作者单位	Hu Xiaoxing, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan.; Li Hao, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan.; Meng Shikang, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan.; Kamijo Takashi, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan.; Hirota Mitsuru, Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan.; Kawada Kiyokazu, Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan.; Tamura Kenji, Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, 305-8572, Japan.; Wuyunna, College of Environment and Resources, Dalian Minzu University, Dalian, Liaoning 116600, 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.