干旱区生态环境知识资源中心(Arid): Water use pattern and transpiration of Mongolian pine plantations in relation to stand age on northern Loess Plateau of China

Arid

DOI	10.1016/j.agrformet.2023.109320
	Water use pattern and transpiration of Mongolian pine plantations in relation to stand age on northern Loess Plateau of China
	Pei, Yanwu; Huang, Laiming; Shao, Ming'an; Zhang, Yinglong; Pan, Yanhui
通讯作者	Shao, MA
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2023
卷号	330
英文摘要	Understanding the water use pattern and transpiration rate of revegetation species is crucial for efficient water management and sustainable vegetation restoration. Mongolian pine (P. sylvestris) plantation has been imple-mented for decades in desert regions of northwest China, achieving significant improvements in combating soil erosion and desertification. However, the characteristics of water use pattern and transpiration of P. sylvestris at different ages remain poorly understood. We investigated seasonal variations in water uptake pattern and transpiration of different-aged P. sylvestris (4-, 10-, and 18-yr) based on stable isotope and sap flow measurements over two growing seasons. The canopy transpiration of P. sylvestris and its discrepancy between the dry and rainy season increased with increasing stand age. The 4-yr P. sylvestris extracted water mainly from shallow soil layer (0-120 cm) across the growing season (63.21-69.40%). In contrast, the older P. sylvestris (10-and 18-yr) dis-played a greater degree of ecological plasticity as they shifted water uptake to deeper soils and groundwater in times of drought. In the rainy season, 10-, and 18-yr P. sylvestris extracted water predominantly from shallow soil layer (68.62%) and shallow plus middle soil layers (0-200 cm) (66.04%), respectively; in the dry season, however, they both shifted main water sources to the middle plus deep soil layers (120-300 cm) (61.29% and 63.45%). The older P. sylvestris also increased absorption of groundwater in the dry season, leading to more severe soil desiccation and faster groundwater decline. The changes in water use patterns of P. sylvestris were related to differences in root distribution and biomass, seasonal variations of plant transpiration, and changes in soil water condition. As a consequence, the variations and controls of age-dependent plant water uptake and transpiration should be considered to implement the corresponding management measures in future reforesta-tion activities to achieve sustainable development goals.
英文关键词	Plant water uptake Stable isotope Transpiration MixSIAR model Northern loess plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000922869400001
WOS关键词	SYLVESTRIS VAR. MONGOLICA ; RING-DOWN SPECTROSCOPY ; SOIL-WATER ; STABLE-ISOTOPE ; SANDY LAND ; CANOPY TRANSPIRATION ; DESERT ECOSYSTEM ; INNER-MONGOLIA ; TREE SIZE ; DROUGHT
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394998
推荐引用方式 GB/T 7714	Pei, Yanwu,Huang, Laiming,Shao, Ming'an,et al. Water use pattern and transpiration of Mongolian pine plantations in relation to stand age on northern Loess Plateau of China[J],2023,330.
APA	Pei, Yanwu,Huang, Laiming,Shao, Ming'an,Zhang, Yinglong,&Pan, Yanhui.(2023).Water use pattern and transpiration of Mongolian pine plantations in relation to stand age on northern Loess Plateau of China.AGRICULTURAL AND FOREST METEOROLOGY,330.
MLA	Pei, Yanwu,et al."Water use pattern and transpiration of Mongolian pine plantations in relation to stand age on northern Loess Plateau of China".AGRICULTURAL AND FOREST METEOROLOGY 330(2023).