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Variability in Minimal-Damage Sap Flow Observations and Whole-Tree Transpiration Estimates in a Coniferous Forest

文献类型：期刊论文

作者Yang, Junjun1,2; He, Zhibin2; Lin, Pengfei2; Du, Jun2; Tian, Quanyan2; Feng, Jianmin1; Liu, Yufeng1; Guo, Lingxia1; Wang, Guohua3,4; Yan, Jialiang5
刊名WATER
出版日期2022-08-01
卷号14期号:16页码:15
关键词Qinghai spruce sap flow transpiration heat ratio method (HRM) upper Heihe River Basin
DOI10.3390/w14162551
通讯作者He, Zhibin(hzbmail@lzb.ac.cn)
英文摘要Transpiration is fundamental to the understanding of the ecophysiology of planted forests in arid ecosystems, and it is one of the most uncertain components in the ecosystem water balance. The objective of this study was to quantify differences in whole-tree transpiration estimates obtained with a heat ratio probe in a secondary Qinghai spruce (Picea crassifolia) forest. To do this, we analyzed the sap flux density values obtained with sensors installed in (1) holes drilled in the preceding growing season (treatment) and (2) holes drilled in the current year (control). The study was conducted in a catchment in the Qilian Mountains of western China. The results showed that an incomplete diameter at breast height (DBH) range contributed to 28.5% of the overestimation of the sapwood area when the DBH > 10 cm and 22.6% of the underestimation of the sapwood area when the DBH < 5 cm. At daily scales, there were significant differences in both the quantity and magnitude of the sap flux density between the treatment and control groups. Furthermore, a linear regression function (R-2 = 0.96, p < 0.001), which was almost parallel to the 1:1 reference line, was obtained for the sap flux density correction for the treatment group, and the daily sap flux density and whole-tree transpiration were underestimated by 36.8 and 37.5%, respectively, at the half-hour scale. This study illustrates uncertainties and a correction function for sap flow estimations in young Qinghai spruce trees when using heat ratio sensors with minimal damage over multiple growing seasons.
WOS关键词SPRUCE PICEA-CRASSIFOLIA ; HEAT PULSE VELOCITY ; HEIHE RIVER-BASIN ; FLUX-DENSITY ; THERMAL DISSIPATION ; WATER-USE ; STAND ; BALANCE ; PINE
资助项目National Natural Sciences Foundation of China[41901050] ; National Natural Sciences Foundation of China[41901044] ; National Natural Sciences Foundation of China[41621001] ; Strategic Priority Program of the Chinese Academy of Sciences[XDA23060301] ; Key Program of the Chinese Academy of Sciences[QYZDJ-SSW-DQC040]
WOS研究方向Environmental Sciences & Ecology ; Water Resources
语种英语
出版者MDPI
WOS记录号WOS:000845111900001
资助机构National Natural Sciences Foundation of China ; Strategic Priority Program of the Chinese Academy of Sciences ; Key Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/182107]  
专题中国科学院地理科学与资源研究所
通讯作者He, Zhibin
作者单位1.Xianyang Normal Univ, Coll Geog & Environm, Xianyang 712000, Peoples R China
2.Chinese Acad Sci, Linze Inland River Basin Res Stn, Chinese Ecosyst Res Network, Key Lab Ecohydrol Inland River Basin,Cold & Arid, Lanzhou 730000, Peoples R China
3.Shanxi Normal Univ, Coll Geog Sci, Taiyuan 030000, Peoples R China
4.Chinese Acad Sci, Key Lab Desert & Desertificat, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China
5.Taiyuan Normal Univ, Inst Geog Sci, Jinzhong 030619, Peoples R China
6.Acad Water Resources Conservat Forests Qilian Mt, Zhangye 734000, Peoples R China
推荐引用方式
GB/T 7714		 Yang, Junjun,He, Zhibin,Lin, Pengfei,et al. Variability in Minimal-Damage Sap Flow Observations and Whole-Tree Transpiration Estimates in a Coniferous Forest[J]. WATER,2022,14(16):15.
APA Yang, Junjun.,He, Zhibin.,Lin, Pengfei.,Du, Jun.,Tian, Quanyan.,...&Zhao, Weijun.(2022).Variability in Minimal-Damage Sap Flow Observations and Whole-Tree Transpiration Estimates in a Coniferous Forest.WATER,14(16),15.
MLA Yang, Junjun,et al."Variability in Minimal-Damage Sap Flow Observations and Whole-Tree Transpiration Estimates in a Coniferous Forest".WATER 14.16(2022):15.

入库方式： OAI收割

来源：地理科学与资源研究所

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