Regionalization and Integrated Assessment of Climate Resource in China based on GIS
Regionalization and Integrated Assessment of Climate Resource in China based on GIS
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发表时间：
2007
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通讯作者：
Guo Zhi-hua;Xiao Wen-fa;Wang Jian-li
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作者：
Guo Zhi-hua;Xiao Wen-fa;Wang Jian-li
根据1973 ~ 2002年中国734个重点气象站的资料，获得了年平均气温、10℃以上积温、干燥度指数、降水量和降水变率，运用聚类分析方法将中国划分为4~7个气候亚区，在每个亚区中，采用“多元回归模型+反距离加权（IDW）残差”的方法对气象数据进行插值，制作空间分辨率为1 km的气候专题图，并采用层次分析法（AHP），建立了中国4个分区的综合气候评价模型，结果表明：年平均气温和10℃以上积温自南向北逐渐降低，南方年平均气温比北方高30℃;干旱度指数和降水变率的值从东南向西北呈增大趋势，全国综合气候评价平均值为4.37，气象条件从东南向西北逐渐变差，在各气候分区中，Ⅰ亚区气候条件最好，气候等级在6级以上，Ⅱ亚区气候等级在4 ~ 5级之间，略低于Ⅰ亚区; Ⅲ亚区气候等级为2 ~ 3级，气候条件较恶劣; Ⅳ亚区气候等级为1 ~ 5级，气候条件由东南向西北变化较大：东南部气候等级在3 - 5级之间，气候条件较好，西北部气候等级在1 - 3级之间，空间数据可以用网格化的气象数据进行定量表达，多尺度的综合分析与评价，综合气候评价是生态环境评价的基础，为生态学、地理学、资源与环境等学科的发展提供基础数据和研究平台。
According to the data during the period of 1973 to 2002 from 734 key meteorological stations in China,annual mean temperature,accumulated temperature over 10℃,aridity index,precipitation and precipitation variability obtained.China was divided into 4～7 Climate sub-areas by means of cluster analysis.In each sub-area,the method of "multiple regression model + Inverse Distance Weighting(IDW) residuals" was used to interpolate meteorological data,and climate thematic maps with a spatial resolution of 1km were produced.With the method of Analysis Hierarchy Process(AHP),the model of integrated climate assessment in China was established with 4 sub-areas.The results show that,the annual mean temperature and accumulated temperature over 10℃ gradually decrease from the south to the north,and the annual mean temperature in south is 30℃ higher than that in north;the value of aridity index and precipitation variability show the increasing trend from the southeast to the northwest,and precipitation gradually decrease from the southeast coast to the northwest inland.The average value of integrated climate assessment in China is 4.37,the meteorological condition gradually becomes more atrocious from the southeast to the northwest.Among all the climate sub-areas,the climate condition in theⅠsub-area is the best where climate grade is above 6;climate grade is between 4 and 5 in the Ⅱ sub-area which is little lower than that in theⅠsub-area;climate grade in the Ⅲ sub-area is ranged between 2 and 3,where the climate condition is rather atrocious;climate grade in the Ⅳ sub-area varies from 1 to 5,where climate condition changes much from the southeast to the northwest: climate grade in the southeast is between 3 and 5,where the climate condition is rather good,while climate grade in the northwest is between 1 and 3,where the climate condition is rather atrocious.Spatial data can be quantitatively expressed with gridded meteorological data.Integrated analysis and assessment of multiple-factors can be realized with superposition of gridded meteorological data,soil data,vegetation data and other spatial data.The integrated climate assessment is the base of eco-environment assessment,it also can offer the basic data and study platform for developing of ecology,geography,resource and environment,etc.