摘要
运用景观生态学和地理信息系统(GIS)的方法,对四川省阆中市岳家沟小流域调整前后的土地利用与景观格局进行了对比分析。结果表明:调整后该区土地利用类型发生明显变化,新增斑块类型3个,商品林、水域面积明显增加,防护薪炭林面积显著减小;土地的经济效益、生态效益指数分别由原来的1529.8,1460.94提升到1719.99,1758.21;景观多样性、均匀度指数分别从调整前的1.3028,0.6108上升到2.0920,0.8463;而景观优势度指数则从0.6431下降到0.2106。说明该区土地利用趋于合理,景观斑块的空间分布趋于均匀,斑块聚集分布状况分散化。
With landscape ecology and GIS methods, the land use and landscape structure in the small watershed of Yuejiagou were studied. The results showed that the land's economic benefit and ecologic benefit index were increased from 1529.8 and 1460.9 to 1 719.99 and 1 758.21 respectively; the indices of landscape diversity and evenness were increased from 1.302 8 and 0.610 8 to 2.092 0 and 0.846 3 respectively, while the indices of landscape dominance were decreased from 0.6431 to (0.210 6), which indicated that the land use of this area tended to be reasonable; the spatial distribution of patches trended to be uniformed; path congregation gradually dispersed.
出处
《山西林业科技》
2004年第4期14-17,29,共5页
Shanxi Forestry Science and Technology
基金
国家"十五"攻关课题(2001BA510B0105)
