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PILOT PRODUCTION OF TRANSPIRATION MEASURING SYSTEM AND ITS PRACTICAL APPLICATION

蒸腾量测量系统的中试及实际应用

基本信息

批准号：
62860017
负责人：
KAKUBARI Yoshitaka
金额：
$ 4.48万
依托单位：
SHIZUOKA UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1989
项目状态：
已结题

项目摘要

A special characteristic of transpiration measuring system developed in this project is described in following points. 1. It's easy to use this measuring system in the field condition because of small designed and light-weight system controller, air controller, gas analyzer and chamber. 2. It's possible to measure photosynthesis and transpiration rates under natural condition. It's better measuring system than that of dry-inlet supplying to chamber. 3. We can develop new single cell-type gas analyzer and are successful to make light weight, saving energy and high responsibility. 4. It's easy to operate measuring system by using micro-computer. 5. We get the highest, state of efficiency by use of high storage memory, various interfaces to another devices and data processing.We evaluated the new measuring system at the field conditions in the beech and oak forests and obtained insufficient results. Because we had not sufficient techniques developing gas analyzer, humidity sensor and function of computer under restriction of light weighting, high responsibility and saving energy.We have already developed an eco-physiological computer simulation model to estimate total transpiration based on an individual tree level and use this model to analyze the differences of transpiration before and after thinning. As we could not develop new system as a first step, it was impossible to get the combination between hardware and software. If we get the next chance, we try to make this system better.

本计画所开发之蒸腾量测系统，其特色如下：1.由于系统控制器、空气控制器、气体分析仪和气室的体积小、重量轻，便于现场使用。2.在自然条件下测定光合速率和蒸腾速率是可能的。该系统比干进气向燃烧室供气的测量系统更优越。3.我们可以开发新的单细胞型气体分析仪，并成功地使重量轻，节能和高响应。4.测量系统采用微机控制，操作方便。5.我们通过使用高存储内存，各种接口到另一个设备和数据处理获得最高的效率状态。我们在山毛榉和橡树林的野外条件下评估了新的测量系统，并获得了不足的结果。由于我国在开发气体分析仪、湿度传感器和计算机功能方面的技术水平不高，受轻量化、高响应性和节能等方面的限制，我们已经建立了一个基于单木水平的蒸腾量的生态生理计算机模拟模型，并利用该模型分析了疏伐前后蒸腾量的差异。由于我们不能开发新的系统作为第一步，这是不可能的硬件和软件之间的结合。如果我们有下一次机会，我们会努力让这个系统变得更好。