1995—2015年贵州省陡坡土地利用景观干扰度变化

郜红娟, 韩会庆, 刘悦, 汪田归, 白玉梅, 马淑亮, 陈思盈

南京林业大学学报(自然科学版) ›› 2020, Vol. 44 ›› Issue (4) : 183-190.

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南京林业大学学报(自然科学版) ›› 2020, Vol. 44 ›› Issue (4) : 183-190. DOI: 10.3969/j.issn.1000-2006.201907009
研究论文

1995—2015年贵州省陡坡土地利用景观干扰度变化

作者信息 +

Changes in landscape disturbance degree of steep slope land use in Guizhou Province from 1995 to 2015

Author information +
文章历史 +

摘要

目的

陡坡为山区土地资源开发利用的重要组成部分,强烈影响着景观格局的稳定性和安全性。研究人类活动对陡坡土地利用景观干扰程度,为合理利用和保护陡坡土地资源提供理论依据。

方法

以贵州省坡度大于25°的土地利用景观为研究对象,基于构建的景观干扰度指数,借助ArcGIS软件的空间分析工具,分析了1995—2015年间贵州省陡坡土地利用景观干扰度时空变化。

结果

1995—2005年间研究区除耕地和水域外,有林地、灌木林、草地、建设用地和未利用地景观类型的干扰度均呈增加趋势,而2005—2015年间全部景观类型的干扰度均表现出下降趋势。1995—2005年间除了东部小部分地区和中西部地区,贵州省大部分地区陡坡景观的干扰度增加,导致水土流失加剧;2005—2015年间除东南部和西部小部分地区外,贵州省大部分地区陡坡景观的干扰度下降,使得水土流失得到缓解。1995—2005年和2005—2015年间,贵州省景观破碎度、景观分离度和景观干扰度与水土流失存在正相关关系,而景观优势度与水土流失存在负相关关系。

结论

人口增长、生态治理等干扰下,耕地、有林地、灌木林和草地景观的变化是导致贵州省陡坡景观干扰度变化的重要因素,景观干扰度与水土流失之间存在明显的相关性。

Abstract

Objective

Land use landscapes on steep slopes are an important part of the development and utilization of land resources in mountainous areas. These are heavily disturbed by human activities, which strongly affect the stability and security of this landscape. In order to rationally use and protect the steep slope land resources, it is necessary to study the disturbance degree of human activities in this landscape.

Method

The spatial and temporal changes of land use landscape disturbance degree on steep slopes in Guizhou Province from 1995 to 2015 were analyzed based on the landscape disturbance index using the spatial analysis tool of ArcGIS software.

Result

The disturbance degree of landscape types for forestland, shrub, grassland, built-up land and unused land, except farmland and water body, increased from 1995 to 2005, while the disturbance degree of all landscape types decreased from 2005 to 2015. Except for a small part of the eastern region and the central-western region, the disturbance degree on steep slope landscape increased in most areas of Guizhou Province from 1995 to 2005, which resulted in the aggravation of soil erosion. Howe?ver, the disturbance degree on steep slope landscapes decreased in most areas of Guizhou Province from 2005 to 2015, except for southeastern region and a small part of the western region, which restrained soil erosion. Landscape fragmentation, separation and disturbance in Guizhou Province were positively correlated with soil erosion, while landscape dominance was negatively correlated with soil erosion from 1995 to 2015 in Guizhou Province.

Conclusion

Changes in landscape of farmland, forestland, shrub and grassland under the disturbance of population growth and ecological management are important factors resulting in changes in the degree of landscape disturbance on steep slopes in Guizhou Pro?vince. There is a significant correlation between landscape disturbance and soil erosion.

关键词

土地利用 / 陡坡 / 水土流失 / 景观干扰度 / 时空格局 / 贵州省

Key words

land use / steep slope / soil erosion / landscape disturbance / spatio-temporal pattern / Guizhou Province

引用本文

导出引用
郜红娟, 韩会庆, 刘悦, 汪田归, 白玉梅, 马淑亮, 陈思盈. 1995—2015年贵州省陡坡土地利用景观干扰度变化[J]. 南京林业大学学报(自然科学版). 2020, 44(4): 183-190 https://doi.org/10.3969/j.issn.1000-2006.201907009
GAO Hongjuan, HAN Huiqing, LIU Yue, WANG Tiangui, BAI Yumei, MA Shuliang, CHEN Siying. Changes in landscape disturbance degree of steep slope land use in Guizhou Province from 1995 to 2015[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2020, 44(4): 183-190 https://doi.org/10.3969/j.issn.1000-2006.201907009
中图分类号: F301. 2   

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基金

贵州省教育厅青年科技人才成长项目(黔教合KY字[2018]262);教育部人文社会科学研究项目(18YJCZH042);贵州理工学院学术新苗培养及探索创新项目(黔科合平台人才[2017]5789-23)

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