摘要
在RS与G IS技术的支持下,该文对鄱阳湖区1990-2002年间的土地利用景观变化进行了分析。研究结果表明,1990-2002年鄱阳湖区面积变化的趋势是耕地减少、林地增加、草地减少、水体增加、居民点与工矿用地大幅度增加,未利用地维持不变。利用二级土地利用景观类型,对景观变化的原因进行了分析。利用多样性指数、优势度、分维数、破碎度等景观指数对鄱阳湖区土地利用景观格局特征的研究表明,1990-2002年鄱阳湖区土地利用景观格局总体变化趋势是多样性增加、优势度减少、分数维减少、破碎度增加。最后,该文利用典型相关分析法对鄱阳湖区景观格局变化的社会经济驱动力进行了定量分析,认为导致景观分维数、景观破碎度变化的主要驱动力是人口与国内生产总值,导致景观多样性和优势度变化的主要驱动力是境内公路里程与农村居民年均纯收入。
Under the support of RS and GIS, the landscape changes were analyzed from 1990 to 2002 in Poyang Lake region. Results indicate that forest, water body, industrial and residential land increase while cultivated land and grassland decrease. The reasons of landscape changes were analyzed by landscape types of secondary land use. The study on land use pattern changes from 1990 to 2002 by adopting landscape indices such as diversity, dominance, fractal dimension and fragmentation demonstrate that diversity and fragmentation increase while dominance and fractal dimension decrease. Finally, the driving forces were quantitatively analyzed using canonical correlation analysis. Results show that population and GDP are the major driving forces for landscape fractal dimension and fragmentation change, while road length and annual net income of farmers are the ones for diversity and dominance change.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2007年第4期79-83,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
江西省教育厅项目(GL06209)
江西省社科规划项目(06YJ10)资助
关键词
鄱阳湖区
土地利用
景观格局
驱动力
Poyang Lake region
land use
landscape pattern
driving force
