自然资源学报 ›› 2019, Vol. 34 ›› Issue (4): 771-784.doi: 10.31497/zrzyxb.20190408
收稿日期:
2018-12-07
修回日期:
2019-02-19
出版日期:
2019-04-20
发布日期:
2019-04-20
作者简介:
作者简介:黄木易(1978- ),男,安徽芜湖人,博士,副教授,主要从事城镇化、流域生态环境的空间信息挖掘及耦合模型研究。E-mail: huangyang78@163.com
基金资助:
HUANG Mu-yi1(), YUE Wen-ze2(
), FENG Shao-ru1, CAI Jie-jie1
Received:
2018-12-07
Revised:
2019-02-19
Online:
2019-04-20
Published:
2019-04-20
摘要:
以大别山核心区精准扶贫对象岳西县为研究单元,选择10个生态阻力因子建立生态安全评价指标体系,利用ArcGIS构建生态阻力面,应用空间数据探索分析方法(Exploratory Spatial Data Analysis,ESDA)、最小累积阻力模型(Minimum Cumulative Resistance,MCR)和重力模型对生态安全进行诊断和潜在生态廊道识别提取。研究表明:(1)岳西县生态安全较高及高等级区域占县域总面积37.79%,而较低及低等级区域占51.89%,整体呈现北低南高的空间特征,生态安全水平总体偏低。(2)ESDA分析显示,生态安全空间分布全局Moran's I指数为0.6374,LISA图显示岳西县生态安全等级主要以高高(HH)、低低(LL)两种聚集类型为主,在空间上呈明显的片状集聚分布特征。在此基础上,选择生境良好的自然保护区及大型风景区斑块为生态源,生成累积耗费阻力面,基于MCR最小累积阻力模型构建生态源之间的最小累积耗费路径,提取潜在生态廊道90条,生态节点103个,利用重力模型识别出21条重要潜在生态廊道,其中,一级和二级潜在生态廊道分别为13条和8条。(3)结合岳西县旅游产业空间发展规划,提出了“一环三带”生态网络框架空间布局模式及优化对策,该模式可作为岳西县生态经济产业发展格局的有效补充。
黄木易, 岳文泽, 冯少茹, 蔡接接. 基于MCR模型的大别山核心区生态安全格局异质性及优化[J]. 自然资源学报, 2019, 34(4): 771-784.
HUANG Mu-yi, YUE Wen-ze, FENG Shao-ru, CAI Jie-jie. Analysis of spatial heterogeneity of ecological security based on MCR model and ecological pattern optimization in the Yuexi county of the Dabie Mountain Area[J]. JOURNAL OF NATURAL RESOURCES, 2019, 34(4): 771-784.
表1
岳西县生态安全因子等级划分"
评价因子 | 序号 | 分级参考 来源 | 单位 | 阻力值 | 权重 | |||
---|---|---|---|---|---|---|---|---|
1级 | 2级 | 3级 | 4级 | |||||
高程 | A | 文献[ | m | <200 | 200~400 | 400~600 | >600 | 0.150 |
坡度 | B | 文献[ | ° | <7 | 7~15 | 15~25 | >25 | 0.200 |
土地利用类型 | C | 文献[ | — | 林地 | 水域 | 农用地 | 建设用地 | 0.050 |
植被覆盖度 | D | 文献[ | — | >65% | 50%~65% | 35%~50% | <35% | 0.150 |
土壤侵蚀 | E | 文献[ | t·km-2·a-1 | <2500 | 2500~5000 | 5000~10000 | >10000 | 0.050 |
距景点距离 | F | 文献[24,29] | m | <1000 | 1000~5000 | >5000 | 0.005 | |
距工业用地距离 | G | 文献[ | m | >1500 | 1000~1500 | 500~1000 | <500 | 0.045 |
距水体距离 | H | 文献[ | m | <100 | 100~500 | 500~1000 | >1000 | 0.200 |
距道路距离 | I | 文献[ | m | >2000 | 1000~2000 | 500~1000 | <500 | 0.100 |
距居民点距离 | J | 文献[22,30] | m | >1500 | 1000~1500 | 500~1000 | <500 | 0.050 |
表2
岳西县潜在生态廊道重要性识别"
重要 性值 | 生态源斑块 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||
生态源斑块 | 1 | — | 220.7892 | 96.5339 | 57.4688 | 31.7698 | 47.9108 | 32.7094 | 58.6744 | 44.8643 | 29.8911 |
2 | — | — | 775.7783 | 200.6901 | 70.7435 | 118.2498 | 49.2884 | 30.1409 | 28.1914 | 20.4705 | |
3 | — | — | — | 600.5939 | 123.3771 | 267.0343 | 58.9505 | 22.0793 | 22.0166 | 18.0512 | |
4 | — | — | — | — | 388.4055 | 522.7442 | 64.3838 | 16.1716 | 16.1476 | 14.0607 | |
5 | — | — | — | — | — | 214.0658 | 58.4684 | 11.4995 | 11.4219 | 11.1292 | |
6 | — | — | — | — | — | — | 165.3681 | 19.9354 | 20.5207 | 19.0215 | |
7 | — | — | — | — | — | — | — | 15.1764 | 18.7530 | 21.8282 | |
8 | — | — | — | — | — | — | — | — | 203.1091 | 65.0220 | |
9 | — | — | — | — | — | — | — | — | — | 274.5304 | |
10 | — | — | — | — | — | — | — | — | — | — |
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