基于改进MCR模型的重庆市江津区生态安全格局构建
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摘要
三峡库区县域生态源地的识别和生态安全格局的构建对库区范围的生态保护具有重要的意义。以三峡库区范围的县域江津区为例,基于改进的最小累积阻力(MCR)模型和GIS空间分析技术,构建生态源地扩张最小累积阻力面和建设用地扩张最小累积阻力面,识别生态廊道、辐射通道以及生态战略节点等生态过程,构建生态安全格局。结果表明:确定了10个生态源地扩张阻力因子和9个城镇用地扩张阻力因子;江津区低水平生态安全格局面积较大,为994.71 km~2,占江津区总面积的30.98%;高水平生态安全格局面积仅占江津区总面积的23.66%;识别出区域重要的生态廊道38条,生态战略节点14个;高中低三级生态安全格局可以作为三峡库区县域的生态保护和城镇用地开发重要的参考依据。
The identification of county ecological source and the construction of ecological security pattern are of great significance to the ecological protection of the Three Gorges Reservoir area. Taking the county-level Jiangjin District as an example, based on the improved minimum cumulative resistance(MCR) model and GIS spatial analysis techniques, the minimum cumulative resistance surface for ecological source expansion and for construction land expansion were constructed to identify ecological corridors, radiation pathways, ecological strategic nodes and other ecological processes, then an ecological security pattern was built. The results showed that 10 expansion resistance factors and 9 urban land expansion resistance factors were determined;the low-level ecological security pattern in Jiangjin District was 994.71 km~2, accounting for 30.98% of the total area of Jiangjin District; the high-level ecological security pattern only accounted for 23.66% of the total area of Jiangjin District; 38 ecological corridors and 14 ecological strategic nodes were identified; ecological safety grids of different levels could be used as a basis for ecological protection and urban land development in the Three Gorges Reservoir area.
The identification of county ecological source and the construction of ecological security pattern are of great significance to the ecological protection of the Three Gorges Reservoir area. Taking the county-level Jiangjin District as an example, based on the improved minimum cumulative resistance(MCR) model and GIS spatial analysis techniques, the minimum cumulative resistance surface for ecological source expansion and for construction land expansion were constructed to identify ecological corridors, radiation pathways, ecological strategic nodes and other ecological processes, then an ecological security pattern was built. The results showed that 10 expansion resistance factors and 9 urban land expansion resistance factors were determined;the low-level ecological security pattern in Jiangjin District was 994.71 km~2, accounting for 30.98% of the total area of Jiangjin District; the high-level ecological security pattern only accounted for 23.66% of the total area of Jiangjin District; 38 ecological corridors and 14 ecological strategic nodes were identified; ecological safety grids of different levels could be used as a basis for ecological protection and urban land development in the Three Gorges Reservoir area.
引文
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[20]况达,陈竹安,危小建,等.基于移动窗口与MCR模型的建设用地适宜性评价——以武汉市江夏区为例[J].湖北民族学院学报:自然科学版,2017,35(4):471-476.
[21]卢德彬,毛婉柳,禹真,等.基于改进MCR模型的山区农村居民点空间增长模拟研究[J].水土保持研究,2016,23(5):322-326.
[22]陈竹安,况达,危小建,等.基于MSPA与MCR模型的余江县生态网络构建[J].长江流域资源与环境,2017,26(8):1199-1207.
[23]龙涛,刘学录,黄万状.基于系统耦合的区域生态安全格局构建——以酒泉市肃州区为例[J].中国农学通报,2015,31(5):132-138.
[24]李潇然,李阳兵,王永艳,等.三峡库区县域景观生态安全格局识别与功能分区——以奉节县为例[J].生态学杂志,2015,34(7):1959-1967.
[25]曹玉红.基于自然生态约束评价的县域生态安全格局构建——以无为县为例[J].中国农学通报,2009,25(5):259-263.
[2]彭建,赵会娟,刘焱序,等.区域生态安全格局构建研究进展与展望[J].地理研究,2017,36(3):407-419.
[3]杜世勋,荣月静.山西省生态安全格局空间识别研究[J].水土保持研究,2017,24(6):147-154.
[4]吴健生,岳新欣,秦维.基于生态系统服务价值重构的生态安全格局构建——以重庆两江新区为例[J].地理研究,2017,36(3):429-440.
[5]曹玉红.基于自然生态约束评价的县域生态安全格局构建——以无为县为例[J].中国农学通报,2009,25(5):259-263.
[6]王蓓,赵军,胡秀芳.基于InVEST模型的黑河流域生态系统服务空间格局分析[J].生态学杂志,2016,35(10):2783-2792.
[7]彭建,李慧蕾,刘焱序,等.雄安新区生态安全格局识别与优化策略[J].地理学报,2018,73(4):701-710.
[8]欧定华,夏建国,张莉,等.区域生态安全格局规划研究进展及规划技术流程探讨[J].生态环境学报,2015,24(1):163-173.
[9]杨斌,李茂娇,程璐,等.多时相遥感数据在四川省茂县景观生态安全格局评价中的应用[J].测绘工程,2018,27(4):41-48.
[10]朱军,李益敏,余艳红.基于GIS的高原湖泊流域生态安全格局构建及优化研究——以星云湖流域为例[J].长江流域资源与环境,2017,26(8):1237-1250.
[11]李颖丽.基于MCR模型的县域生态用地识别及安全格局构建[D].重庆:西南大学,2017.
[12]曾黎,杨庆媛,杨人豪,等.三峡库区生态屏障区景观格局优化——以重庆市江津区为例[J].生态学杂志,2017,36(5):1364-1373.
[13]苏丽丽,蒲春玲,王楠,等.县域农地流转现状分析与探索——重庆市江津区为例[J].天津农业科学,2015,21(11):94-97.
[14]高岩红,瞿雪梅,梁颖涛,等.渝西南典型区农田表层土壤有机碳库研究[J].西南大学学报:自然科学版,2014,36(5):120-126.
[15]Knaapen J P,Scheffer M,Harms B.Estimating habitat isolation in landscape planning[J].Landscape&Urban Planning,1992,23(1):1-16.
[16]杨姗姗,邹长新,沈渭寿,等.基于生态红线划分的生态安全格局构建——以江西省为例[J].生态学杂志,2016,35(1):250-258.
[17]李世佳,张安明,郭欢欢,等.三峡库区县域土地生态红线划定研究——以重庆市江津区为例[J].广东农业科学,2017,44(10):52-58.
[18]高俊刚,吴雪,张镱锂,等.基于等级层次分析法的金沙江下游地区生态功能分区[J].生态学报,2016,36(1):134-147.
[19]叶玉瑶,苏泳娴,张虹鸥,等.生态阻力面模型构建及其在城市扩展模拟中的应用[J].地理学报,2014,69(4):485-496.
[20]况达,陈竹安,危小建,等.基于移动窗口与MCR模型的建设用地适宜性评价——以武汉市江夏区为例[J].湖北民族学院学报:自然科学版,2017,35(4):471-476.
[21]卢德彬,毛婉柳,禹真,等.基于改进MCR模型的山区农村居民点空间增长模拟研究[J].水土保持研究,2016,23(5):322-326.
[22]陈竹安,况达,危小建,等.基于MSPA与MCR模型的余江县生态网络构建[J].长江流域资源与环境,2017,26(8):1199-1207.
[23]龙涛,刘学录,黄万状.基于系统耦合的区域生态安全格局构建——以酒泉市肃州区为例[J].中国农学通报,2015,31(5):132-138.
[24]李潇然,李阳兵,王永艳,等.三峡库区县域景观生态安全格局识别与功能分区——以奉节县为例[J].生态学杂志,2015,34(7):1959-1967.
[25]曹玉红.基于自然生态约束评价的县域生态安全格局构建——以无为县为例[J].中国农学通报,2009,25(5):259-263.