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1990-2017年喀斯特自然保护区土地利用变化对生境质量的影响
黄贤峰1, 杨永菊2, 武艺3, 高亚红4, 顾羊羊5, 袁忠民6
1.贵州省环境科学研究设计院, 贵州 贵阳 550081;2.河南理工大学 测绘与国土信息工程学院, 河南 焦作 454003;3.中国电建集团贵阳勘测设计研究院有限公司, 贵州 贵阳 550081;4.南京铱迅信息技术股份有限公司, 江苏 南京 210000;5.环境保护部南京环境科学研究所, 江苏 南京 210042;6.贵州省义龙新区农林水务和移民局, 贵州 义龙 562409
摘要:
[目的] 探讨自然保护区生境质量变化规律及其影响因素,为制定有效的区域生态保护政策提供科学依据。[方法] 基于Landsat系列影像数据,采用生境质量估算模型与土地利用转型生境贡献率,以贵州省兴义市坡岗自然保护区为例,分析土地利用变化对不同功能分区生境质量的影响并定量评估退耕还林还草政策情景对生境质量改善效果。[结果] 1990—2017年自然保护区土地流转主要发生在草地和耕地转为林地、其他类型转为草地和林地间。28 a保护区平均生境质量提高15.71%,且呈现先增加后减少的趋势。1990年保护区平均生境质量表现为:缓冲区 > 核心区 > 试验区,2001年以后转换为:核心区 > 缓冲区 > 试验区。在退耕还林还草政策情景下,坡岗自然保护区平均生境质量从当前情景的0.88提高到0.92,生境质量改善。[结论] 坡岗自然保护区的建立、退耕还林还草工程的实施以及人类活动的增加是影响保护区生境质量变化的主要原因。
关键词:  土地利用变化  InVEST-Habitat Quality模型  生境贡献率  坡岗自然保护区
DOI:10.13961/j.cnki.stbctb.2018.06.052
分类号:
基金项目:国家重点研发计划项目“区域生态安全综合评估预警技术与示范”(2017YFC0506606);“西南生态安全格局调控技术途径与措施”(2016YFC0502106);河南理工大学创新型科研团队项目(T2018-4);河南省教育厅人文社科基金(2017-ZZJH-199)
Land Use Change and Its Impact on Habitat Quality in Karst Nature Reserve from 1990 to 2017
HUANG Xianfeng1, YANG Yongju2, WU Yi3, GAO Yahong4, GU Yangyang5, YUAN Zhongmin6
1.Guizhou Institute of Environmental Sciences Research and Design, Guiyang, Guizhou 550081, China;2.School of Surveying and Land Information Engineering, He'nan Polytechnic University, Jiaozuo, He'nan 454003, China;3.Guiyang Engineering Corporation Limited, Power Construction Corporation of China, Guiyang, Guizhou 550081, China;4.Nanjing Yixun Information Technology Co., Ltd., Nanjing, Jiangsu 210000, China;5.Nanjing Institute of Environmental Science, Ministry of Environmental Protection, Nanjing, Jiangsu 210042, China;6.Bureau of Agriculture, Forestry, Water and Domestic Immigration, Yilong, Guizhou 562409, China
Abstract:
[Objective] The changes of habitat quality and its affecting factors in the nature reserve were studied for the formulation of effective local ecological protection policies.[Methods] Taking the Pogang nature reserve in Xingyi City of Guizhou Province as an example, based on the images of Landsat-5 TM, Landsat-7 ETM+, Landsat-8 OLI, and combining ArcGIS with ENVI software, we used habitat quality estimation model and habitat quality contribution rate of land use transformation to analyze the land use change and its impact on habitat quality from 1990 to 2017 and to quantitatively assess the effect of the policy of grain for green on the improvement of habitat quality.[Results] The land transformation of reserve mainly occurred from grassland and cultivated land to forest land, and from other land types to grassland and forest land from 1990 to 2017. During the past 28 years, the overall habitat quality of the reserve showed a trend of first increase and subsequent decrease. The increase was by 15.71% in comparison with the value in 1990. The average habitat quality of the reserve in 1990 was ranked as:buffer area > core area > pilot area; whereas the average habitat quality of the reserve after 2001 was the core area > buffer area > pilot area. As the policy of grain for green was carried out, the average habitat quality index of Pogang Nature Reserve increased significantly from 0.88 to 0.92.[Conclusion] The establishment of Pogang Nature Reserve, the implementation of the reforestation project and the increase of human activities are the main reasons for the change of the habitat quality.
Key words:  land use change  InVEST-Habitat quality model  habitat quality contribution rate  Pogang nature reserve