地形因子对福州市水热空间分布影响的分析

山区地形复杂,水热资源分布差异显著,为了研究福州的水热分布规律,利用地理信息技术、遥感技术、并结合数字高程模型,通过提取坡度、坡向等因素,分别对福州的水热与高程、坡度等因素之间的关系进行分析,发现水热分布随高程呈现递减规律,同时热量变化与高程呈负的相关关系。研究福州的水热分布规律有助于山地气候资源调查与利用、生态环境建设乃至精细农业的实施提供重要依据。

Primary Study on the Relationship of Distribution of Water and Heat with Topographic Parameters in Fuzhou City

Temperature and water,as a kind of agriculture resource,formed mainly by solar radiation to atmosphere,their distribution on earth surface are interwoven with topographic characteristics of the surface,especially in mountain area.In order to studg about their distribution,a series of related topographic parameters,such as slope gradient,aspect,elevation is extracted by the means of GIS based on RS,DEM of the test area.Through studying their relationship among these parameters,the result is that the variation of temperature and water with the elevation rising is downside.The experiment shows that the regional distribution of water and heat could be effectively visualized and quantified.It could be of critical significance for the research of regional microclimate,agricultural planning and application of solar energy.