Development of the model of estimating evapotranspiration using climate data and vegetation factors.

开发利用气候数据和植被因素估算蒸散量的模型。

• 批准号: 08458143
• 负责人: AOKI Masatoshi
• 金额: $ 3.71万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08458143/
• 关键词: climate conditions; soil moisture; vegetation coverage; stomatal conductance; vegetation height; evapotranspiration; Bowen ratio; model inprovement; 実蒸発散量; ボ-エン比; 推定モデル; 微気象条件; 植生被覆率; モデル検証; 推定誤差

The aim of the research project is to develop the model of estimating evapotranspiration using simple climate data and vegetation factors.For this porpose, the authors measured actual evapotranspiration using Bowen ratio technique and micrometeorological conditions such as temeprature, relative humidity, soil moisture tension, vegetation coverage, vegetation hight and leaf stomatal conductance at different climite regions, places, and different types of vegetation as follows : (1) Sri-Lanka, (2) Thailand, (3) Sweden, (4)Hokkaido, (5) Kantho Region. By addint wind speed and vegetation coverage, the author sucesseeded to improv the epirical model of evapotrans-coverage, the autor sucsseeded to improv the empirical model of evapotranspiration made by Aoki et al. (1993).Further improvement was made by putting stomatal conductance and vegetaion height. But the equation was not clear becase of less data and valiety of stomatal conductance, although the equation showed to decrease the error of estimate evapotranspiration if two factors were added by the model.

本研究的目的是建立一个利用简单气候资料和植被因子估算蒸散量的模型。为此，作者利用波文比技术，在不同气候区、不同地点，（1）斯里兰卡，（2）泰国，（3）瑞典，（4）北海道，（5）官渡地区。通过增加风速和植被覆盖度，改进了蒸散-覆盖度的经验模型，改进了Aoki等（1993）的蒸散经验模型，并通过增加气孔导度和植被高度进一步改进。但由于资料较少，气孔导度的变异性较大，方程的解不清楚，虽然加入两个因子后，方程的解可以减小蒸散量的误差。

项目成果

M.AOKI: "Estimation of Bowen ratio by climatic factors" Proceedings of ASAE International Conference on Evapotranspiration & Irrigation Scheduling,Nor.1996,San Antonio,Texas,USA. 341-346 (1996)

M.AOKI：“Estimation of Bowen Ratio by climatic Factors”ASAE 国际蒸发蒸腾会议论文集

青木 正敏: "タイ国Sukhothai付近の天水田における微気象・蒸発散・熱収支長期観測計画 -GAME-Tropics計画に参加して-" 日本熱帯生態学会ニューズレター(Aug.25,1997). 28号. 7-13 (1997)

青木正敏：“泰国素可泰附近雨养田的微气象、蒸散量和热平衡的长期观测计划 - 参与 GAME-Tropics 项目 -”日本热带生态学会通讯（1997 年 8 月 25 日） ）第 28 .7-13 号（1997 年）。

K.Nakamura: "Forcast of evapotranspiration bymeteorological information." Proceedings of International Conference on Evapotranspiration and Irrigation Scheduling.Nov.4-7,1996.San Antonio.Texas,USA.463-467 (1996)

K.Nakamura：“通过气象信息预测蒸散量。”

Y.Hideshima: "Regional network of irrigation scheduling information." Proceedings of International Conference on Evapotranspiration and Irrigation Scheduling.Nov.4-7,1996.San Antonio.Texas,USA.716-721 (1996)

Y.Hideshima：“灌溉调度信息的区域网络。”

K.Nakamura: "Forcast of evapotranspiration by meteological information." Proceedings of International Conference on Evapotranspiration and Irrigation Scheduling. Nov.4-7,1996. San Antonio, Texas, USA.463-467 (1996)

K.Nakamura：“通过气象信息预测蒸散量。”