地球上森林面积的减少是人类对大自然影响的重要后果之一。这种情况现在还在继续发生,而且热带森林还在被大量砍伐。当伐尽森林并将这些土地变为农业用地,或是被草木茂盛的灌丛代替时,地面热量平衡、水分平衡、水文学状况、小气侯及中气侯特征都会发生变化。当广大的土地上 The reduction of the forest area on Earth is one of the important consequences of human influence on nature. This is still happening now, and the tropical forests are still being largely deforested. Changes in caloric balance, water balance, hydrological conditions, microclimate, and mid-climatological characteristics of the terrestrial surface can occur when forests are deforested and the lands converted into agricultural land or replaced by lush shrubs. When the vast land