气候变化领域集成服务门户(CCPortal): Determining Water Use Patterns for the Betula platyphylla in the Southern Greater Khingan Mountains and Its Adaptation to Drought

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DOI	10.3390/w16070927
	Determining Water Use Patterns for the Betula platyphylla in the Southern Greater Khingan Mountains and Its Adaptation to Drought
	Zhao, Pengwu; Wu, Yiheng; Yao, Huaxia; Li, Yuanqiao; Liu, Bingbing; Zhou, Mei; Shu, Yang; Zhou, Liwen; Xiang, Changlin
发表日期	2024
EISSN	2073-4441
起始页码	16
结束页码	7
卷号	16 期号:7
英文摘要	Due to global climate change, seasonal droughts have intensified and become more frequent in certain semi-arid regions, and plants often adjust their water uptake depths to adapt to shifting environmental conditions. The southern Greater Khingan Mountains have a large natural secondary forest area and act as an important ecological barrier. This study focused on examining the water use patterns of the primary plant species, Betula platyphylla, within the natural secondary forest of the southern Greater Khingan Mountains. The investigation utilized oxygen stable isotope techniques and covered a timeframe spanning from July 2019 to September 2020. The findings indicate that the adaptable water utilization strategies and rapid response to precipitation could facilitate plants fully utilizing water from all depths, thereby enabling them to better adapt to arid environments. When the rainfall was low (390.4 mm in the growing season of 2019), the developed shallow roots quickly absorbed shallow soil water (0-20 cm, with a utilization ratio of 40.4% for the entire root depth), but when the rainfall increased (501.5 mm in the growing season of 2020), Betula platyphylla gradually transitioned to extracting soil water from deeper soil layers (40-60 cm) and deepened its root system (with a utilization ratio of 39.4%), indicating its adaptability to semi-arid environments. Therefore, the flexible water use strategy of Betula platyphylla in the same habitat may give it a competitive advantage during low rainfall periods. The findings are important for the protection of natural forests and water management in the southern Greater Khingan Mountains.
英文关键词	Betula platyphylla; water use pattern; stable isotopes; MixSIAR model; southern Greater Khingan Mountains
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:001201588700001
来源期刊	WATER
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/289203
作者单位	Inner Mongolia Agricultural University; Chinese Academy of Forestry; Research Institute of Forest Ecology, Environment and Protection, CAF; Nipissing University; Beijing Normal University
推荐引用方式 GB/T 7714	Zhao, Pengwu,Wu, Yiheng,Yao, Huaxia,et al. Determining Water Use Patterns for the Betula platyphylla in the Southern Greater Khingan Mountains and Its Adaptation to Drought[J],2024,16(7).
APA	Zhao, Pengwu.,Wu, Yiheng.,Yao, Huaxia.,Li, Yuanqiao.,Liu, Bingbing.,...&Xiang, Changlin.(2024).Determining Water Use Patterns for the Betula platyphylla in the Southern Greater Khingan Mountains and Its Adaptation to Drought.WATER,16(7).
MLA	Zhao, Pengwu,et al."Determining Water Use Patterns for the Betula platyphylla in the Southern Greater Khingan Mountains and Its Adaptation to Drought".WATER 16.7(2024).