【摘要】 森林植被通过两种途径对气候产生影响:"碳"库和下垫面。森林是陆地上最大的碳库,森林生态系统的光合作用和呼吸作用的相对变化决定着森林生态系统是一个汇还是一个源,从而对气候产生着不同的影响。人类干扰对森林的碳收支过程具有明显影响。森林又是一个特殊的下垫面,它的粗糙度、反射率、地表水利用性、热量平衡、水分平衡与其他下垫面具有明显的不同。这些特征对降水、局地环流的形成具有明显的促进作用,从而对不同尺度和区域范围的气候产生影响。更多还原

【Abstract】 Forest vegetation affects climate in two ways:as a carbon pool;as a special underlying surface. Forest is the biggest carbon pool in the terrene,and it is a carbon sink or a source depends on the elative change in photosynthetic rate and respiration rate,which have different impacts on climates.Disturbance of humankind greatly affects the absorption and release of carbon.Moreover, forest differs from other underlying surface in roughness, reflectance ratio, surface water availability,heat balance and hydrological balance distinctly,which facilitate the precipitation and local atmosphere circulation, so that it affects the climate in different scale and range.更多还原