The influences of climate factors caused by changing vegetation with development

植被随发展变化对气候因素的影响

• 批准号: 60302086
• 负责人: HORIGUCHI Ikuo
• 金额: $ 2.62万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60302086/
• 关键词: Vegetation; Climate factor; air temperature; net radiation; 地中環境; Vegetation; Climate factor; air temperature; net radiation; 地中環境

The influences of the climate factors, i. e. air temperature, net radiation, evapotranspiratio and solar radiation, caused by changing vegetation were studied.The canopy temperature above paddy rice and grass higher than that of the forest, when the density of vegetations was thin. Howver, the canopy temperature of forest became equal to that of paddy rice and grass, when the canopys were grown up and the density of vegetations became thick. In conclusion, air temperature will be variable and will raise up, when the forest was changed to the paddy field and the grass land.The ratio of effective radiation to net radiation increased with increasing green covered area for above 60 % of greencovered area, and greencovered area was affected by the albedo that was expressed a equation;0.121 G + 10.321 C + 0.835 S + 3.406 ( G:greencovered area, C: continuous rain fall days, S: solar radiation over atmosphere ). Also the changing of the net radiation and the effect of night cooling by difference of vegetation were obsereved by using various canopy models. The longwave radiations from canopies are different for each canopy model, and consequently their surface temperatures and air temperatures changed.The heat budget under canopy is affected by thickness of vegetation and the heat transfer into soil became small with its thickness, otherhand, sensible heat and latent heat became large with it.

气候因素的影响，即。 e。研究了由植被变化引起的空气温度，净辐射，蒸散液和太阳辐射。当植被密度稀薄时，植被变化引起的植被温度高于森林。霍弗（Howver），森林的冠层温度等于帕迪稻和草的温度，当山anopy的长大并且植被的密度变厚时。总之，当森林更改为稻田和草地时，空气温度将是可变的，并将升高。有效的辐射与净辐射的比率随着格林内覆盖面积的60％以上的绿色覆盖面积的增加而增加，而格林覆盖面积的面积和格林覆盖的面积受到了方程式的反击; 0.121 g + 10.321 c + 0.321 c + 0.835 s + 0.835 s：GRE;连续下雨的日子，S：大气上的太阳辐射）。同样，通过使用各种冠层模型，可以观察到净辐射的变化以及植被差异的夜间冷却效果。每种冠层模型的长角辐射都不同，因此它们的表面温度和空气温度发生了变化。冠层下的热预算受植被厚度的影响，并且热量转移到土壤中，其厚度，又有其厚度，明智的热量，潜在的热量和潜热的热量变得很大。