小尺度下湛江市土地利用景观格局变化及驱动力

以湛江市1986年和2000年的遥感影像为信息源,在小尺度下通过RS、GIS技术计算和分析湛江市城市土地利用景观格局的变化情况.结果表明,景观的多样性指数和优势度指数分别由1.720增加到1.886和由0.193增加到0.359;而平均斑块面积和景观镶嵌度指数分别由3.220减小为3.103和27.361减小为26.878.这说明在人类活动的强干扰下该区的景观破碎化程度增加,景观格局发生了明显改变,并分析了景观格局变化的驱动力.

Study on the Changes and Driving Forces of Urban Landscape Patterns in Small Scale in Zhanjiang City

Based on the source of Remote Sensing (RS) images in 1986 and 2000, this paper analyses the changes of urban landscape patterns in Zhanjiang city by using the RS and GIS technology in small scale. The result shows that the landscape diversity index, dominance index, patch average area and patchiness have changed respectively from 1.720 to 1.886, 0.139 to 0.359, 3.220 to 3.103 and from 27.361 to 26.878 in different time from 1986 to 2000, which shows that the degree of landscape fragmentation has increased and the landscape pattern has changed greatly over the severe interference of humankind. Finally, this paper analyses the driving forces of the changes.