福州市土地利用景观格局变化及驱动力研究

以1995年、2005年和2015年福州市遥感影像解译数据以及自然和社会经济统计数据为基础,运用景观指数、 Shannon多样性t检验和土地利用信息熵等方法,结合Logistic回归模型分析福州市20年间土地利用景观格局动态变化规律及驱动机制.结果表明:①20年间福州市林地、农地和未利用土地面积呈减少趋势,而建设用地和水体面积持续上升;建设用地大量蚕食林地和农地,自然景观聚集度下降,破碎化程度日益严重.②区域整体景观格局空间结构分布更加平均,景观多样性逐渐增加,在3个时期内福州市景观格局多样性均呈现极显著变化.③通过Logistic回归模型分析可知,林地转变机率主要受地形因素影响,农地、水体和未利用土地转变机率主要受可达性因素影响,建设用地的转变机率主要受人口因素影响.

On Landuse Landscape Pattern Change and Driving Forces in Fuzhou

Based on the interpretation data of remote sensing images of Fuzhou in 1995, 2005 and 2015, and natural and socio-economic statistics, studies have been done with landscape index, Shannon''s t-test, landuse information entropy and other methods, combined with Logistic regression model analysis of the dynamic changes and driving mechanisms of landuse landscape pattern in Fuzhou during the 20 years. The results show that, 1) In the past 20 years, the area of forestland, farmland and unused land in Fuzhou City has shown a decreasing trend, while the construction land and water area had continued to rise; a large number of construction land sites erode forestland and farmland, and the degree of aggregation of natural landscapes has declined, the degree of fragmentation had become increasingly serious. 2) The spatial structure of the overall landscape pattern of the region was more evenly distributed, and the landscape diversity was gradually increasing. In the three periods, the landscape pattern diversity of Fuzhou has changed significantly. (3) The Logistic regression model analysis results show that the forestland transformation probability was mainly affected by topographic factors, and the transformation probability of farmland, water and unused land was mainly affected by accessibility factors. The transformation probability of construction land was mainly affected by population factors.