Study of canopy transpiration based on a distributed hydrology model in a small karst watershed of southwest China

详细信息    查看全文

• 作者：Zhi-cai Zhang (1)
  Xi Chen (1)
  Peng Shi (1)
  Geng-xin Ou (2)
  
• 关键词：Canopy transpiration ; Distributed hydrology model ; Karst ; Epikarst
• 刊名：Carbonates and Evaporites
• 出版年：2013
• 出版时间：2 - May 2013
• 年：2013
• 卷：28
• 期：1
• 页码：111-117
• 全文大小：549KB
• 参考文献：1. Baker JM, van Bavel CHM (1987) Measurements of mass flow of water in the stems of herbaceous plants. Plant Cell Environ 10(9):777-82
  2. Denmead OT, Shaw RT (1962) Availability of soil water to plants as affected by soil moisture content and meteorological conditions. Agron J 54:358-90
  3. Jara J, Stockle CO, Kjelgaard J (1998) Measurement of evapotranspiration and its components in a corn (Zea Mays L.) field. Agric For Meteorol 92(2):131-45 CrossRef
  4. Kite G (2000) Using a basin-scale hydrological model to estimate crop transpiration and soil evaporation. J Hydrol 229(1):50-9 CrossRef
  5. Lagergren F, Lindroth A (2002) Transpiration response to soil moisture in pine and spruce trees in Sweden. Agric For Meteorol 112(2):67-5 CrossRef
  6. Li R, Wang S, Zhang D (2002) The role of man-made factors in ecoenvironmental detection in Guizhou karst areas. Bull Miner Petrol Geochem 21(1):43-7
  7. Monteith JL (1965) Evaporation and environment. In: Fogg GE (ed.) The state and movement of water in living organisms. University Press, Cambridge, pp 205-34
  8. Mu QZ, Jones LA, Kimball JS, McDonald KC, Running SW (2009) Satellite assessment of land surface evapotranspiration for the pan-Arctic domain. Water Resour Res 45(9):W09420 CrossRef
  9. Peng T, Wang SJ, Zhang XB, Rong L, Chen B, Yang T, Wan JY (2008) Results of preliminary monitoring of surface runoff coefficients for karst slopes. Earth and Environment 36(2):25-29 (in Chinese)
  10. Scanlon BR, Mace RE, Barrett ME, Smith B (2003) Can we simulate regional groundwater flow in a karst system using equivalent porous media models? Case study, Barton Springs Edwards aquifer, USA. J Hydrol [Amsterdam] 276(1-):137-58 CrossRef
  11. Sturm N, Reber S, Kessler A, Tenhunen JD (1996) Soil moisture variation and plant water stress at the Hartheim Scots pine plantation. Theoret Appl Climatol 53(1-):123-33 CrossRef
  12. Wang S, Rong L, Du X, Ge Y (2008) Water source partitioning and water use strategy among karst trees growing on shallow karst—perspectives from stable isotope composition. Bull Miner Petrol Geochem 27(z1):513-14
  13. Wigmosta MS, Vail LW, Lettenmaier DP (1994) A distributed hydrology-vegetation model for complex terrain. Water Resour Res 30(6):1665-679 CrossRef
  14. Xiang C, Song L, Zhang P, Pan G, Wang J (2004) Preliminary study on soil fauna diversity in different vegetation cover in Shilin National Park, Yunnan, China. Resour Sci 26:98-03
  15. Xue X, Chen X, Zhang Z, Wei L (2009) Effect of karst fracture on saturated subsurface flow confluence: Water Resour. Power 27(6):20-3 (in Chinese)
  16. Yuan DX, Cai GH (1988) The science of karst environment: Chongqing. Chongqing Press (in Chinese), China
  17. Zhang ZC, Xi C, Ghadouani A, Peng C (2011) Modeling hydrological processes influenced by soil, rock and vegetation in a small karst basin of southwest China. Hydrol Process 25(15):2456-470 CrossRef
  
• 作者单位：Zhi-cai Zhang (1)
  Xi Chen (1)
  Peng Shi (1)
  Geng-xin Ou (2)
  
  1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China
  2. School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE, 68583-0996, USA
  
• ISSN：1878-5212

文摘

Understanding temporal and spatial distribution of canopy transpiration is indispensable in hydrology and hydroecology. Canopy transpiration in a karst basin is controlled by meteorological conditions, plant species, and water in soil and rock fractures. Estimation of canopy transpiration at catchment scale in such heterogeneously hydrogeological conditions is challenging. Hydrological modeling is a useful method to estimate canopy transpiration at catchment scale, and it can be used to evaluate the effect of land-cover change. In this study, a distributed hydrological model was used to estimate canopy transpiration within a small karst watershed for the period July 28, 2007, to October 19, 2007. The results show that transpiration was about 19.2 percent of total rainfall, and daily transpiration rate in this basin ranged from 0.01 to 3.4?mm/day with an average of 0.8?mm/day during the study period. Epikarst water is an important water source for canopy transpiration in addition to soil water in the karst basin. And land-cover change has important effects on canopy transpiration in this area.