The Study of Water and Carbon Dioxide Circulation over Semi-Arid Fields in China

我国半干旱地区水和二氧化碳循环研究

• 批准号: 02044102
• 负责人: OHTAKI Eiji
• 金额: --
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Overseas Scientific Survey.
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02044102/
• 关键词: Carbon dioxide flux; Water vapor flux; Eddy correlation method; Aerodynamic method; Heat balance method

The scientists of Okayama University in Japan and Institute of Geography in China have planned to make a joint effort on The Study of Water and Carbon Dioxide Circulation over Semi-Arid Fields in China. The results of this program contribute to development of micrometeorology and crop physiology of both countries.The present program is a preliminary stage of the comprehensive cooperative experiment that may be accepted in near future. In this year, three Japanese scientists visited the Institute of Geography in China from May 30 to June 14 in 1990, and inspected the experimental field of Yucheng Experimental Station situated in the Shatung Province. The field has an area of 5km x 5km. One scientist visited Okayama University from October 1 to 15 in 1990. He joined to the field experiment and workshop held in Okayama University. We discussed about research subjects. Following scientific problems will be solved by the cooperative experiment.(1) Energy budget over semi-arid field.(2) Transport mechanisms of water vapor over crop field.(3) Water distribution over crop field estimated by a remote sensing technique.(4) Observational study of evaporation and water balance in semi-arid fields.(5) Study on water requirement and techniques of water-saving irrigation for main crops in semi-arid fields.(6) Observational study of Km/Kh under advective conditions.(7) Transport mechanisms of carbon dioxide over crop field.(8) Observational study of carbon dioxide flux and carbon dioxide budget in semi-arid fields.(9) Numerical study of atmospheric boundary layer over semi-arid fields.

日本冈山大学和中国地理研究所的科学家计划共同开展中国半干旱地区水和二氧化碳循环研究。该项目的成果有助于两国​​微气象学和作物生理学的发展。本项目是近期可能接受的综合合作实验的初步阶段。今年，三名日本科学家于1990年5月30日至6月14日访问中国地理研究所，考察了位于沙东省的雨城实验站实验田。场地面积为5km x 5km。 1990年10月1日至15日，一位科学家访问冈山大学，参加了在冈山大学举办的现场实验和研讨会。我们讨论了研究课题。合作实验将解决以下科学问题：（1）半干旱田地能量收支。（2）农田水汽输送机制。（3）遥感技术估算农田水分分布。（ 4）半干旱田蒸发与水分平衡观测研究。（5）半干旱田主要农作物需水量及节水灌溉技术研究。（6）平流条件下Km/Kh观测研究.(7)作物田间二氧化碳输送机制。(8)半干旱田二氧化碳通量和收支观测研究。(9)半干旱田大气边界层数值研究。