摘要
在ArcGIS支持下,基于数字高程模型(DEM),采用聚焦分析和相关分析方法,对1997-2006年黑龙江省旬平均气温与地面高程的相关性进行定量分析。结果表明,旬平均气温与高程有较高的相关性,与高程值value及50 km左右邻域内高程均值mean的函数相关系数较大,但各旬内的相关程度不同。作物生长期各旬平均气温与地面高程的相关系数较大,最大相关系数在-0.4889^-0.8209,平均为-0.6905。这对农业气候资源研究中旬平均气温精确插值具有重要意义。
Supported by ArcGIS software,adopting focal analysis and correlation analysis methods,using 10-day air temperature,based on digital elevation model（DEM）,the quantitative relativity between average 10-day air temperature from 1997 to 2006 and ground elevation in Heilongjiang Province has been worked out.The results show that there are higher relativity between average 10-day air temperature and ground elevation but different correlation coefficients in each 10-day period,representing larger correlation coefficients between average 10-day air temperature and the function value of elevation mean within approximate 50 km radius of focal neighborhood and those in crop growth periods are greater than that in other periods. All maximal correlation coefficients in all 10 days are between -0. 4889--0. 8209 with an average of -0. 6905. The result of this study has a great significance to air temperature interpolation in the course of agro-climatic resources research.
出处
《地理与地理信息科学》
CSCD
北大核心
2009年第6期37-40,共4页
Geography and Geo-Information Science
基金
东北农业大学创新团队基金"黑土区保护与可持续利用"(CXT003-4-2)
关键词
黑龙江省
气温
DEM
聚焦分析
相关分析
GIS
Heilongjiang Province
air temperature
DEM
focal analysis
correlation analysis
GIS
