Evapotranspiration of an oasis-desert transition zone in the middle stream of Heihe River, Northwest China
LiWen ZHAO1,2, WenZhi ZHAO1,2*
1 Linze Inland River Basin Research Station, Chinese Ecosystem Network Research, Lanzhou 730000, China;
2 Key Laboratory of Ecohydrology of Inland River Basin, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
Evapotranspiration of an oasis-desert transition zone in the middle stream of Heihe River, Northwest China
LiWen ZHAO1,2, WenZhi ZHAO1,2*
1 Linze Inland River Basin Research Station, Chinese Ecosystem Network Research, Lanzhou 730000, China;
2 Key Laboratory of Ecohydrology of Inland River Basin, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
摘要 As a main component in water balance, evapotranspiration is of great importance for water saving and irrigation-measure making, especially in arid or semiarid regions. Although studies of evapotranspiration have been conducted for a long time, studies concentrated on oasis-desert transition zone are very limited. On the basis of the meteorological data and other parameters (e.g. leaf area index (LAI)) of an oasis-desert transition zone in the middle stream of Heihe River from 2005 to 2011, this paper calculated both reference (ET0) and actual evapotranspiration (ETc) using FAO56 Penman-Monteith and Penman-Monteith models, respectively. In combination with pan evaporation (Ep) measured by E601 pan evaporator, four aspects were analyzed: (1) ET0 was firstly verified by Ep; (2) Characteristics of ET0 and ETc were compared, while the influencing factors were also analyzed; (3) Since meteorological data are often unavailable for estimating ET0 through FAO56 Penman-Monteith model in this region, pan evaporation coefficient (Kp) is very important when using observed Ep to predict ET0. Under this circumstance, an empirical formula of Kp was put forward for this region; (4) Crop coefficient (Kc), an important index to reflect evapotranspiration, was also analyzed. Results show that mean annual values of ET0 and ETc were 840 and 221 mm, respectively. On the daily bases, ET0 and ETc were 2.3 and 0.6 mm/d, respectively. The annual tendency of ET0 and ETc was very similar, but their amplitude was obviously different. The differences among ET0 and ETc were mainly attributed to the different meteorological variables and leaf area index. The calculated Kc was about 0.25 and showed little variation during the growing season, indicating that available water (e.g. precipitation and irrigation) of about 221 mm/a was required to keep the water balance in this region. The results provide an comprehensive analysis of evapotranspiration for an oasis-desert transition zone in the middle stream of Heihe River, which was seldom reported before.
Abstract: As a main component in water balance, evapotranspiration is of great importance for water saving and irrigation-measure making, especially in arid or semiarid regions. Although studies of evapotranspiration have been conducted for a long time, studies concentrated on oasis-desert transition zone are very limited. On the basis of the meteorological data and other parameters (e.g. leaf area index (LAI)) of an oasis-desert transition zone in the middle stream of Heihe River from 2005 to 2011, this paper calculated both reference (ET0) and actual evapotranspiration (ETc) using FAO56 Penman-Monteith and Penman-Monteith models, respectively. In combination with pan evaporation (Ep) measured by E601 pan evaporator, four aspects were analyzed: (1) ET0 was firstly verified by Ep; (2) Characteristics of ET0 and ETc were compared, while the influencing factors were also analyzed; (3) Since meteorological data are often unavailable for estimating ET0 through FAO56 Penman-Monteith model in this region, pan evaporation coefficient (Kp) is very important when using observed Ep to predict ET0. Under this circumstance, an empirical formula of Kp was put forward for this region; (4) Crop coefficient (Kc), an important index to reflect evapotranspiration, was also analyzed. Results show that mean annual values of ET0 and ETc were 840 and 221 mm, respectively. On the daily bases, ET0 and ETc were 2.3 and 0.6 mm/d, respectively. The annual tendency of ET0 and ETc was very similar, but their amplitude was obviously different. The differences among ET0 and ETc were mainly attributed to the different meteorological variables and leaf area index. The calculated Kc was about 0.25 and showed little variation during the growing season, indicating that available water (e.g. precipitation and irrigation) of about 221 mm/a was required to keep the water balance in this region. The results provide an comprehensive analysis of evapotranspiration for an oasis-desert transition zone in the middle stream of Heihe River, which was seldom reported before.
This work was founded by the National Natural Science Foundation of China (40930634, 41125002).
通讯作者:
WenZhi ZHAO
E-mail: zhaowzh@lzb.ac.cn
引用本文:
LiWen ZHAO, WenZhi ZHA. Evapotranspiration of an oasis-desert transition zone in the middle stream of Heihe River, Northwest China[J]. 干旱区科学, 2014, 6(5): 529-539.
LiWen ZHAO, WenZhi ZHA. Evapotranspiration of an oasis-desert transition zone in the middle stream of Heihe River, Northwest China. Journal of Arid Land, 2014, 6(5): 529-539.
Allen R G, Smith M, Pereira L S, et al. 1994. An update for the calculation of reference evapotranspiration. ICID Bulletin, 43(2): 35–92.Allen R G, Pereira L S, Raes D, et al. 1998. Crop evapotranspiration- guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56. FAO, Rome.Allen R G, Pereira L S, Howell T A, et al. 2011. Evapotranspiration information reporting: I. factors governing measurement accuracy. Agricultural Water Management, 98(6): 899–920.ASCE-EWRI. 2005. The ASCE standardized reference evapotranspiration equation. In: Allen RG, Walter IA, Elliot RL, et al. Reported by the American Society of Civil Engineers (ASCE) Task Committee on Standardization of Reference Evapotranspiration. ASCE, Reston, 0-7844-0805-X, 204.Brutsaert W, Parlange M B. 1998. Hydrologic cycle explains the evaporation paradox. Nature, 396(6706): 30.Chiew F H S, Kamaladasa N N, Malano H M, et al. 1995. Penman-Monteith, FAO-24 reference crop evapotranspiration and class-A pan data in Australia. Agricultural Water Management, 28(1): 9–21.Cuenca R H. 1989. Irrigation System Design: An Engineering Approach. Englewood Cliffs, NJ: Prentice Hall.De La Fuente A, Bing N, Hoeschele I, et al. 2004. Discovery of meaningful associations in genomic data using partial correlation coefficients. Bioinformatics, 20(18): 3565–3574.Doorenbos J, Pruitt W O. 1977. Crop water requirements. FAO Irrigation and Drainage. Paper 24. Land and Water Development Division, FAO, Rome.Doorenbos J, Pruitt W O. 1984. Guidelines for predicting crop water requirements, Irrigation and Drainage Paper 24. Land and Water Development Division, FAO, Rome.Ehlers E, Krafft T. 1996. German global change research. National Committee on Global Change Research, Bonn: 128.Fisher J B, Whittaker R J, Malhi Y. 2011. ET come home: potential evapotranspiration in geographical ecology. Global Ecology and Biogeography, 20(1): 1–18.Fu G, Liu C, Chen S, et al. 2004. Investigating the conversion coefficients for free water surface evaporation of different evaporation pans. Hydrological Processes, 18(2): 2247–2262.Gao S, Su P X, Yan Q D, et al. 2010. Canopy and leaf gas exchange of Haloxylon ammodendron under different soil moisture regimes. Science China Life Sciences, 53(6): 718–728.Howell T, Steiner J, Schneider A, et al. 1995. Evapotranspiration of irrigated winter wheat: Southern High Plains. Transactions of the ASAE, 38(3): 745–759.Jensen D, Hargreaves G, Temesgen B, et al. 1997. Computation of ET0 under nonideal conditions. Journal of Irrigation and Drainage Engineering, 123(5): 394–400.Jensen M E. 1974. Consumptive Use of Water and Irrigation Water Requirements. New York: American Society of Civil Engineers.Jensen M E, Burman R D, Allen R G. 1990. Evapotranspiration and irrigation water requirements. ASCE.Jia J H, Zhao W Z, Li S B. 2012. Regional evapotranspiration rate of oasis and surrounding desert. Hydrological Processes, doi: 10.1002/hyp.9447.Li S B, Zhao W Z. 2010. Satellite-based actual evapotranspiration estimation in the middle reach of the Heihe River Basin using the SEBAL method. Hydrological Processes, 24(23): 3337–3344.Li X M, Lu L, Yang W F, et al. 2011. Estimation of evapotranspiration in an arid region by remote sensing–A case study in the middle reaches of the Heihe River Basin. International Journal of Applied Earth Observation and Geoinformation, 17: 85–93.Li Y, Horton R, Ren T, et al. 2010. Prediction of annual reference evapotranspiration using climatic data. Agricultural Water Management, 97(2): 300–308.Liu B, Zhao W Z. 2009. Ecological adaptability of photosynthesis and water metabolism for Tamarix Ramosissima and Nitraria Sphaerocarpa in desert-oasis ecotone. Journal of Desert Research, 29(1): 101–107.Liu B, Zhao W Z, Chang X X, et al. 2010. Water requirements and stability of oasis ecosystem in arid region, China. Environmental Earth Sciences, 59(6): 1235–1244.Molina H P, Navarro A M, Osorio M R, et al. 2006. Social and irrigation water management issues in some water user’s associations of the Low Segura River Valley (Alicante, Spain). Sustainable Irrigation Management, Technologies and Policies, 96: 205.Monteith J L. 1965. Evaporation and Environment. In: Symposium of the Society of Experimental Biology. Cambridge, UK: Cambridge University Press, 205–234.Monteith J L. 1981. Evaporation and surface temperature. Quarterly Journal of the Royal Meteorological Society, 107(451): 1–27.Penman H L. 1948. Natural evaporation from open water, bare soil and grass. Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 193(1032): 120–145.Pereira L S, Perrier A, Allen R G, et al. 1999. Evapotranspiration: concepts and future trends. Journal of Irrigation and Drainage Engineering, 125(2): 45–51.Priestley C, Taylor R. 1972. On the assessment of surface heat flux and evaporation using large-scale parameters. Monthly Weather Review, 100(2): 81–92.Rana G, Katerji N. 2000. Measurement and estimation of actual evapotranspiration in the field under Mediterranean climate: a review. European Journal of Agronomy, 13(2): 125–153.Raupach M. 2001. Combination theory and equilibrium evaporation. Quarterly Journal of the Royal Meteorological Society, 127(574): 1149–1181.Shuttleworth W J, Wallace J. 1985. Evaporation from sparse crops–an energy combination theory. Quarterly Journal of the Royal Meteorological Society, 111(469): 839–855.Snyder R L. 1992. Equation for evaporation pan to evapotranspiration conversions. Journal of Irrigation and Drainage Engineering, 118(6): 977–980.Snyder R L, Orang M, Matyac S, et al. 2005. Simplified estimation of reference evapotranspiration from pan evaporation data in California. Journal of Irrigation and Drainage Engineering, 131(3): 249–253.Stannard D I. 1993. Comparison of Penman-Monteith, Shuttleworth-Wallace, and modified Priestley-Taylor evapo-transpiration models for wildland vegetation in semiarid rangeland. Water Resources Research, 29(5): 1379–1392.Steiner J L, Howell T A, Schneider A D. 1991. Lysimetric evaluation of daily potential evapotranspiration models for grain sorghum. Agronomy Journal, 83(1): 240–247.Su Y Z, Zhao W Z, Su P X, et al. 2007. Ecological effects of desertification control and desertified land reclamation in an oasis–desert ecotone in an arid region: a case study in Hexi Corridor, northwest China. Ecological Engineering, 29(2): 117–124.Szeicz G, Long I. 1969. Surface resistance of crop canopies. Water Resources Research, 5(3): 622–633.Tasumi M, Allen R G, Trezza R, et al. 2005. Satellite-based energy balance to assess within-population variance of crop coefficient curves. Journal of Irrigation and Drainage Engineering, 131(1): 94–109.Thornthwaite C W. 1948. An approach toward a rational classification of climate. Geographical Review, 38(1): 55–94.Verstraeten W W, Veroustraete F, Feyen J. 2008. Assessment of evapotranspiration and soil moisture content across different scales of observation. Sensors, 8(1): 70–117.Wu J K, Ding Y J, Wei Z, et al. 2005. Study on the reference evapotranspiration of natural steppes in arid areas―a case study in the Middle Reaches of the Heihe River, Gansu Province. Arid Zone Research, 22(4): 514–519.Xing Z, Chow L, Meng F, et al. 2008. Testing reference evapotranspiration estimation methods using evaporation pan and modeling in Maritime region of Canada. Journal of Irrigation and Drainage Engineering, 134(4): 417–424.Xu C, Gong L, Jiang T, et al. 2006. Analysis of spatial distribution and temporal trend of reference evapotranspiration and pan evaporation in Changjiang (Yangtze River) catchment. Journal of Hydrology, 327(1): 81–93.Zhang Y Q, Liu C M, Tang Y H, et al. 2007. Trends in pan evaporation and reference and actual evapotranspiration across the Tibetan Plateau. Journal of Geophysical Research, Atmospheres (1984–2012), 112(D12).Zhao L W, Ji X B. 2010. Quantification of transpiration and evaporation over agricultural field using the FAO-56 dual crop coefficient approach–a case study of the maize field in an oasis in the middlestream of the Heihe River Basin in northwest China. China Agriculture Science, 43(19): 4016–4026.Zhao W Z, Ji X B, Kang E S, et al. 2010a. Evaluation of Penman-Monteith model applied to a maize field in the arid area of northwest China. Hydrology and Earth System Sciences, 7(1): 461–491.Zhao W Z, Liu B, Zhang Z H. 2010b. Water requirements of maize in the middle Heihe River basin, China. Agricultural Water Management, 97(2): 215–223.Zhou L H, Yang G J. 2006. Ecological economic problems and development patterns of the Arid Inland River Basin in Northwest China. Ambio: 316–318.
2014, Vol. 6 
