行事案内

平成19年度　第30回 地球研セミナー

¶ 講演要旨

　   The water balance of Australia is precariously balanced, with 90 % of annual rainfall evapotranspired and 10 % lost as run-off in river flow. Australian vegetation has evolved to minimise the amount of water lost either as recharge to groundwater or river flow. Recharge under Australian native woodlands is less than 2 % of rainfall and replacing native woodlands with annual grasses or crops has significantly influenced the ecohydrology of many temperate landscapes in Australia. Recent work modelling vegetation water use, using a detailed mechanistic soil-plant-atmosphere model (Williams et al.1998) and also a simple 3 parameter Jarvis-Stewart type model will be discussed.

  Eamus氏は、集水域スケールでの植生と水循環の相互作用から、環境応答に関連した植物の個葉レベルでの生理生態学まで、幅広い視点で精力的な仕事されている方です。また、水文学、生態学、環境学、植物生理学の複合的な観点から、植生と水環境の相互作用について扱った「Ecohydrology」という本の執筆にも、編者の一人として関わっています。

  地球研との関わりとしては、2008年10月にIAHSやGWSPとの共催という形で京都で開かれる国際シンポジウム「HydroChange2008」の中で、「地下水資源と生態系の相互作用」というセッションにてコンビナーを務めていただく予定です。

We invited Prof. Derek Eamus (University of Technology, Sydney) to give a
talk to us at RIHN seminar on 26th July. Please feel free to join the seminar.

¶ Abstract

　   The water balance of Australia is precariously balanced, with 90 % of annual rainfall evapotranspired and 10 % lost as run-off in river flow. Australian vegetation has evolved to minimise the amount of water lost either as recharge to groundwater or river flow. Recharge under Australian native woodlands is less than 2 % of rainfall and replacing native woodlands with annual grasses or crops has significantly influenced the ecohydrology of many temperate landscapes in Australia. Recent work modelling vegetation water use, using a detailed mechanistic soil-plant-atmosphere model (Williams et al.1998) and also a simple 3 parameter Jarvis-Stewart type model will be discussed.

  Prof. Eamus ( http://www.science.uts.edu.au/des/StaffPages/DerekEamus/derek_eamus.html ) has been focusing the interaction between water resources and plants from catchment scale processes (vegetation and groundwater interactions) to leaf scale processes (photosynthesis and transpiration).

  Such a study are introduced in the recently published book "Ecohydrology"( http://www.csiro.au/resources/ps25g.html）, for which he is involved as co-editor. He'll also join the coming international symposium "HydroChange2008"（ http://www.chikyu.ac.jp/HC_2008）as a convener at a session "Interaction between the groundwater resources and ecosystems" This symposium is co-organized by RIHN, IAHS and GWSP, and held at Kyoto in October, 2008.