Interannual variation in stand transpiration estimated by sapflow measurement in a semi-arid black locust plantation, LoessPlateau, China
Zhang,JG(Zhang,Jianguo)[1,2,5]; Guan,JH(Guan,Jinhong)[1,2,5]; Shi,WY(Shi,Weiyu)[3]; Yamanaka,N(Yamanaka,Norikazu)[4]; Du,S(Du,Sheng)[1,2]
2014-04
发表期刊Ecohydrology
卷号8期号:1页码:137-147
文章类型期刊论文
摘要

The semiarid region of the Loess Plateau in China is characterized by its fragile ecosystems. Soil erosion and water shortage are major factors influencing the ecology and hydrology of vegetation in this area. For proper management of watershed ecosystems, quantification of water use by major vegetation types is needed. We used Granier-type thermal dissipation probes in a black locust (Robinia pseudoacacia) plantation, and up-scaled stand transpiration from individual measurements of stem sap flow. Stand transpiration water use during the growing seasons of 2008–2010 was estimated based on measured sap flux densities and sapwood areas. Seasonal and interannual variations were observed in stand-scale transpiration. Within a monthly time scale, water use by daily transpiration was correlated with daily solar radiation and daytime average vapor pressure deficit. The monthly changes in stand transpiration were mainly correlated with changes in leaf area index, and with mean daytime vapor pressure deficit, solar radiation and potential evapotranspiration at lower significance. A positive relationship between stand transpiration and soil moisture conditions was detected at an annual scale but not at a monthly scale. Precipitation did not show a clear correlation with stand transpiration at either seasonal or annual timescale. The results suggest that while the stand transpiration is controlled by multiple factors, those contributing to a significant difference vary with time-scales. Some factors (e.g. soil moisture) may only be detected upon long-term observations.

关键词Black Locust Robinia Pseudoacacia Loess Plateau Sap Flow Stand Transpiration Thermal Dissipation Probe
DOI10.1002/eco.1495
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9479
专题黄土与第四纪地质国家重点实验室(2010~)
作者单位1.State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciencesand Ministry of Water Resources, Yangling, Shaanxi 712100, China;
2.Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi 712100, China;
3.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, Shaanxi 710075, China;
4.Arid Land Research Center, Tottori University, Tottori 680-0001, Japan;
5.University of Chinese Academy of Sciences, Beijing 100049, China
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GB/T 7714
Zhang,JG,Guan,JH,Shi,WY,et al. Interannual variation in stand transpiration estimated by sapflow measurement in a semi-arid black locust plantation, LoessPlateau, China[J]. Ecohydrology,2014,8(1):137-147.
APA Zhang,JG,Guan,JH,Shi,WY,Yamanaka,N,&Du,S.(2014).Interannual variation in stand transpiration estimated by sapflow measurement in a semi-arid black locust plantation, LoessPlateau, China.Ecohydrology,8(1),137-147.
MLA Zhang,JG,et al."Interannual variation in stand transpiration estimated by sapflow measurement in a semi-arid black locust plantation, LoessPlateau, China".Ecohydrology 8.1(2014):137-147.
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