银川盆地土地利用变化对景观格局脆弱性的影响

应用生态学报

银川盆地土地利用变化对景观格局脆弱性的影响

任志远^1,2,3*,张晗^1,2,3

(¹陕西师范大学旅游与环境学院, 西安 710062; ²陕西师范大学西北国土资源研究中心, 西安 710062; ³陕西师范大学西北历史环境与经济社会发展研究院, 西安 710062)

出版日期:2016-01-18 发布日期:2016-01-18

Effects of land use change on landscape pattern vulnerability in Yinchuan Basin, Northwest China.

REN Zhi-yuan^1,2,3*, ZHANG Han^1,2,3

(¹College of Tourism and Environment Sciences, Shaanxi Normal University, Xi’an 710062, China; ²Center for Land Resources Research in Northwest China, Shaanxi Normal University, Xi’an 710062, China; ³Center for Historical Environment and SocioEconomic Development in Northwest China, Shaanxi Normal University, Xi’an 710062, China)
.

Online:2016-01-18 Published:2016-01-18

摘要/Abstract

摘要： 景观格局脆弱性能反映生态系统的不稳定性和对外界干扰的敏感性，有助于了解生态环境的状态和变化趋势.以银川盆地为研究对象，结合景观敏感性和景观适应性2个维度获取2001和2013年研究区景观格局脆弱度的分布情况，并探讨土地利用程度综合指数、综合土地利用动态度、土地利用变化重要性指数和多种土地转移类型对景观格局脆弱度的影响.结果表明：土地利用程度综合指数的增加主要由耕地、林地、建设用地引起，耕地、林地的比例越高脆弱度越低，建设用地作用相反；随着综合土地利用类型动态度的增加，建设用地显著提高景观格局脆弱度，其次是草地，林地显著降低景观格局脆弱度，其次是耕地；随着土地利用变化重要性指数的增加，耕地显著降低景观格局脆弱度，其次是林地，草地有较弱趋势，规律不明显，建设用地显著提高景观格局脆弱度；耕地、林地、草地为主要转移类型时，建设用地的增加会提高景观格局脆弱度，建设用地为主要转移类型时，林地和草地会提高景观格局脆弱度，耕地作用相反.土地利用类型数量的变化在一定程度上可以影响土地空间结构变化，为合理开发利用土地资源提供参考依据.三元图能有效地反映多种土地利用变化类型对景观格局脆弱度的影响，丰富了土地利用变化研究的内容.

Abstract: Landscape pattern vulnerability reflects the instability and sensitivity of ecological system to external disturbances and helps to understand the status and trend of ecological environment. This paper used landscape sensitivity index and landscape adaptability index to construct the landscape pattern vulnerability index of Yinchuan Basin, and got the distribution of the landscape pattern vulnerability in 2001 and 2013. Our study explored the effect of the land use degree composite index, the integrated land use dynamic degree, the importance index of land use change and various types of land transfer on landscape pattern vulnerability. Results showed that the land use degree composite index was mainly caused by the increase of the arable land, forest and the construction land. The higher proportion of the arable land or forest, the lower the vulnerability was, and the construction land had the opposite effect. With the increase of integrated land use dynamic degree, the construction land significantly increased the vulnerability, followed by grassland, and the forest significantly decreased the vulnerability, followed by the arable land. As the importance index of land use change increasing, the arable land could significantly decrease the vulnerability, followed by the forest, the grassland had a weaker trend with no obvious pattern, and the construction land significantly increased the vulnerability. When the arable land, forest and the grassland were the main types of land use transfer, the increasing proportion of the construction land increased the vulnerability. When the construction land was the main type of land use transfer, the grassland and forest improved the vulnerability and the arable land had the opposite effect. Changes in the number of land use types influenced the spatial structure of land use to a certain extent, which could offer a reference on using and developing the land resources scientifically. The ternary diagram could reflect the impact of various types of land use change on the landscape vulnerability, which diagram enriched the content of the research on the land use and change.

任志远1,2,3*,张晗1,2,3. 银川盆地土地利用变化对景观格局脆弱性的影响[J]. 应用生态学报.

REN Zhi-yuan1,2,3*, ZHANG Han1,2,3. Effects of land use change on landscape pattern vulnerability in Yinchuan Basin, Northwest China.[J]. Chinese Journal of Applied Ecology.