基于DEM的农业指标温度分析——以甘肃河东地区为例  

Analysis of the Agriculture Index Temperature Based on DEM——A Case Study in Hedong Region of Gansu Province

作　　者：张旭东[1,2] 秘晓东[3] 辛吉武[4] 尹东[3] 王润元[1] 

机构地区：[1]中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州730020 [2]兰州区域气候中心,甘肃兰州73002 [3]甘肃省气象局,甘肃兰州730020 [4]海南省气象局,海南海口570203

出　　处：《冰川冻土》2009年第5期880-884,共5页Journal of Glaciology and Geocryology

基　　金：甘肃省科技攻关计划项目"基于‘3S’技术的甘肃省河东地区特种作物气候生态研究";公益性行业(气象)科研专项(GYHY200806021)资助

摘　　要：基于甘肃河东地区61个气象近30a(1971—2000年)的气温资料计算了≥0℃、≥10℃积温;利用地理信息系统(GIS)技术对≥0℃和≥10℃积温进行了数据栅格化.结果表明:甘肃省河东地区≥0℃积温、≥10℃活动和有效积温与经度和海拔的相关性达到极显著水平,推算积温与实际积温的相对误比较小,数据栅格化的≥0℃积温、≥10℃活动和有效积温空间分布比实际积温更突显地域差别,这种巨大差异对农业结构的多样性发展提供了条件;气候变暖使热量资源增加,对农业的影响还与降水资源有关系.Based on the air temperature data from 61 meteorological observation stations in Hedong region of Gansu province in the latest 30 years （1971- 2000）, the cumulative temperatures above 0 ℃ and 10 ℃ have been calculated. The geographic information system （GIS） was used to rasterize the cumulative temperature data. The results showed that the cumulative temperature above 0℃ and the active and effective cumulative temperature above 10℃ have significant correlation with longitude and altitude. This indicated that the relative error is minor between predicted and observed cumulative temperatures. The space distribution of the rastering cumulative temperature above 0℃ and the active and effective cumulative temperature above 10 ℃ could make fine geographical distinctions as compared with the observed cumulative temperature. This enormous distinction provides favorable conditions for diversity of agriculture structure. The thermal resource increase due to climate warming, together with precipitation increase, has an effect on the agriculture.

关 键 词：甘肃河东 农业指标温度 DEM 

分 类 号：S161.25[农业科学—农业气象学]