摘要
随着第二次全国土地调查成果的完成,区域土地利用结构研究对新一轮土地利用总体规划的编制划意义重大。该文采用景观生态学景观结构指数与GIS技术相结合方法,以四川绵阳市涪城区为例,对川西北丘陵区土地利用结构的空间分异进行了定量研究。研究结果表明:(1)研究区土地利用数量结构空间分异十分明显,土地利用多样化和土地利用组合类型数整体水平较高,且城市近郊与远郊差异明显;土地利用的集中程度则恰恰相反,与多样化呈显著负相关;农用地(耕地、园地、林地)区位熵优势在城市远郊乡镇,而建设用地区位熵优势位于城市近郊乡镇。(2)空间格局分异总体水平较高,但从城市近郊到远郊差异明显,破碎度表现为由弱变强,多样性表现为由简单到复杂,优势度表现为由高降低;均匀度表现为由低变高。
With the completion of the second national land survey, regional land use structure of the new round of regulations for the preparation of the overall land use plan is of great significance. In this paper, by applying landscape ecology, landscape structure indices and GIS technology combined approach to Fucheng District, Mianyang City, Sichuan Province, for example, Northwest Sichuan hilly area of land use structure of the spatial variation of a quantitative is discussed. The results show that： （1） The number of land use structure of spatial variation is clear, land - use type of diversification and the overall land use is somewhat in high level, and the city suburbs and outer suburbs significantly have clear differences; the land - use concentration is just opposite, and the diversity is significantly negatively correlated; agricultural land （cropland, orchard, woodland） the advanta- ges of location quotient exurban towns, while the construction of the entropy with the areas of our advantages in the suburban towns. （2） The spatial pattern of the higher overall level of differentiation, but from the city suburbs to the outer suburbs, there exist significant differences, fragmentation from weak to strong, the diversity from to complex, the high -dominance from high to low; and the uniformity is from low to high.
出处
《绵阳师范学院学报》
2012年第5期96-104,共9页
Journal of Mianyang Teachers＇ College
基金
地方横向合作项目(HX2009001)
关键词
土地利用
景观结构
空间分异
绵阳市涪城区
Land use
landscape structure
spatial variation
Mianyang Fucheng district simple
