The Research on the Effect of the River Flow Condition Change on the Agricultural Water Utilization by the Global Warming

全球变暖导致河流水流状况变化对农业用水的影响研究

基本信息

批准号：
16580203
负责人：
KATO Toru
金额：
$ 1.79万
依托单位：
Miyagi University (2005-2006)Miyagi Agricultural College (2004)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2006
项目状态：
已结题

项目摘要

1. In April in the snowmelt mature stage, total runoff depth is 371mm at the Okura dam(Miyagi prefecture), and 742mm at the Touri dam(Toyama prefecture). The depth decreases 33mm at the Okura dam, and 82mm at the Touri dam on the temperature 3℃ rise.2. Snowmelt runoff is 262mm at the Okura dam, and 620mm at the Touri dam. And the mean ratio of the snowmelt runoff to the total runoff is 70%, and 83% at the Touri dam. When the temperature increases 4℃, the mean ratio is 35% at the Okura dam, and 45% at the Touri dam. Like this, it was able to be demonstrated the fact that the dam function of the snow remarkably lowered, if the global warming advanced.3. It tried to observe the relationship between rice paddy crop bill time and agricultural water with Okura dam which is one of the research object basin in Sendai Plain.4. It is almost equalized with present temperature of Hiroshima and Fukuoka, when the temperature of Sendai increases 4℃, and it consists. The high temperature injury will be received in the ripening stage, when rice transplanting is done by accelerating May early month or April early month. Therefore, it is guessed with that it does the rice transplanting in Miyagi Prefecture in June early month, if global warming advances, and will harvest it in the October early month.5. However, it is anticipated June that it is the time in which there are most small river flow, and again, that the snowmelt runoff volume can not be expected by the warming either, and that it faces the extreme water shortage. On this problem, further examination is necessary.

1. 4月，融雪成熟期，大仓水库（宫城县）总径流深度为371毫米，图里水坝（富山县）总径流深度为742毫米。大仓水库深度减少33毫米，图里水库深度减少82毫米。气温上升3℃。2.大仓水坝融雪径流为262毫米。气温升高4℃时，融雪径流占总径流的平均比例为70%，图里坝为83%，大仓坝为45%。这样，可以证明如果全球变暖加剧，积雪的水坝功能会显着降低。3。仙台平原的研究对象盆地之一的大仓水库的水稻作物生长时间与农业用水之间的关系。4．当仙台气温上升4℃时，与广岛和福冈现在的气温基本持平。 5月上旬或4月上旬进行插秧时，在成熟期会受到高温损伤，因此宫城县的插秧预计在6月上旬进行。 5．如果全球变暖进一步加剧，将在10月上旬收获。但预计6月是河流流量最小的时期，融雪径流量也无法减少。气候变暖的预期，以及面临的极端缺水问题，有必要进一步审视。