沙漠增温效应特征及绿洲农业热量资源分异规律的研究

Characteristics of Desert Improving Temperature Effect and Distribution of Oasis Agricultural Heat Resource

为了进一步认识绿洲高效农业特殊的热量资源,通过研究沙漠增温效应特征表明:沙漠增温效应强弱随距离沙漠远近而不同,100km范围内沙漠对绿洲的平均增温为1 76℃;另外增温效应导致绿洲日、年温差大、干热风及冷害等气候特征;由于沙漠的面积、地貌特点等的差异,使增温效应产生原因及作用程度不尽相同,表现出绿洲农业资源分异规律,并将西北干旱区绿洲分为5个类型区。

In order to further understand the heat resource distribution about oases high-efficiency agriculture, the study focused on characteristics of desert improving temperature effect was conducted. Results showed that the effect changes along with the distance from desert, and desert will add average temperature about 1.76℃ to oasis in the scope of 100 km. Moreover, the desert improving temperature effect can cause some weather characteristics, such as larger temperature variance of day and year, dry-hot wind and cold damage in oasis. Due to the differentiation about area, landforms of desert, the forming reason and function degree of desert improving temperature effect are not same, which incarnates the different distribution regulation of oasis agriculture heat resource. Further, the oasis of northwest China arid region can be classified into five different types.