WANG An-zhou,ZHANG Gui-bin,GENG Xiu-li.Research on Urban Landscape Dynamics of Zhengzhou City during 1988-2002[J].Research of Soil and Water Conservation,2010,17(02):190-194.
1988-2002年郑州市景观格局演变分析
- Title:
- Research on Urban Landscape Dynamics of Zhengzhou City during 1988-2002
- Keywords:
- landscape pattern; 3S technologies; urban growth; Zhengzhou city
- 分类号:
- F301.24
- 摘要:
- 以郑州市区1988年、1995年和2002年3幅遥感影像为基础数据源，在3S技术支持下，利用景观生态学理论和方法，通过遥感影像解译、景观格局指数选取与计算、逐步回归分析等，对郑州市景观格局动态及其城市扩展的时空分异特征进行了全面分析。结果表明：（1）1988-2002年郑州市建设用地、林地显著增加，景观空间结构仍以农业用地为主。其中建设用地增加85.27 km2，主要由农村居民点和水浇地转化而来。（2）郑州市景观破碎度增大、优势度指数降低、整体分维数略有增加，城市景观格局趋于复杂化、破碎化和多元化。（3）城市景观具有显著的空间梯度变化特点，且存在明显方向分异，NW-SE向为城市扩展中轴线。（4）城市扩展主要集中在三环路内，扩展强度达1.36，且多为内部填充式扩展；三环与绕城公路间，扩展倍数为1.56，扩展强度仅0.37，城市主要沿道路外延式扩展。
- Abstract:
- Based on remote sensing images in 1988, 1995 and 2002, the principle of landscape ecology and the techniques of RS and GIS, this paper comprehensively analyzes urban landscape pattern changes and driving factors in Zhengzhou city by remote sensing image interpretation, landscape pattern indexes for selection and calculation, stepwise regression analysis. The area of construction land and forest land increased rapidly while that of cultivated land decreased significantly. Construction land area increased 85.95 km2 during 1988-2002, which was transformed mainly from the resident and irrigable land. The patch characteristics of urban landscape changed obviously. The patch number, the edge density, the diversity index and the fragmentation index of landscape increased by 28.82%, 9.64%, 0.97% and 14.63% respectively, while the patch fractal dimension decreased from 0.137 in 1988 to 0.118 in 2002, which meant that the who1e shape turned irregular and the fragment of the landscape degree became serious. The gradient features of urban landscape pattern were analyzed based on the profile graph of land use degree, there was obvious diversification in different direction and the NW-SE is urban expansion’s central axis. Urban expansion entered fast growing period from 1990, internal filled growth of Zhengzhou city centralized mainly within the third ring road while extensive expansion between the third ring road and ringroad.
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备注/Memo
收稿日期:2009-9-11。
基金项目:国家社会科学基金项目（40771065）
作者简介:王安周（1981- ），男，河南林州人，硕士研究生，研究方向：景观生态学。E-mail：birdlz@126.com