摘要
分析沙漠化形成的气候原因,指出气候的变干、变暖及局地性暴雨的增强,导致沙漠化进程的加快。根据全区各沙漠化土地面积动态变化情况,提出沙漠化面积的变化率与气温的升高、降水日数的减少有关。并在科尔沁沙地选用(119°43′16″E～121°39′38″E、42°33′43″N～43°46′16″N)区域作为示范区,分别给出了沙化面积增长率与气温距平、降水日数距平之间的定量评估模型。
The climate causes of desertification was analyzed. The climate getting drier and warmer, as well as the reinforcement of local heavy rain, made desertification speed up. Based on the dynamics of desertification area in whole region, it pointed out that the variability of desertification area had relations with the increase of the temperature and the reduction of the precipitation days. The area of (119°43′16″E- 121°39′38″E, 42°33′43″N- 43°46′16″N in Horqin sandland was selected as model area, And the quantitative assessment model between the variability of desertification area and the anomalies of temperature and precipitation days were given, respectively.
出处
《气候与环境研究》
CSCD
2002年第4期457-464,共8页
Climatic and Environmental Research
基金
中国气象局青年气象科学基金资助
关键词
气候变化
沙漠化
气温
降水
评估模型
temperature
precitation
desertification
assessment model
