奈曼沙漠化地表小气候的观测与研究

Study on Microclimate of Desertified Land in Naiman Area

简要叙述了奈曼沙地的小气候观测方法;通过沙地小气候各类要素的特征分析,论述沙漠化地表所产生的反馈作用与小气候各要素的变化,以及小气候变化与沙漠化环境过程的关系。

Preliminary microclimatic observations on sandy land showed that with the development of desertification environment and increasingly intensified feedback effects occurred on ground surface various elements of nearsurface microclimate are firstly affected. This causes great loss of solar radiation, e. g. it lost up to 572 w/m2 and the net radiation averaged about 50% in the noon. The daily mean reflectivity is 36% or so. The air temperature and ground temperature also showed great variations. The reduction of roughness and intensifying of turbulent motion cuase wind erosion on land surface. All these climatic elements directly reflect the deterioration of desertification environment.