基于MSPA和MCR模型的秦岭(陕西段)山地生态网络构建

doi:10.13287/j.1001-9332.202105.012

应用生态学报 ›› 2021, Vol. 32 ›› Issue (5): 1545-1553.doi: 10.13287/j.1001-9332.202105.012

基于MSPA和MCR模型的秦岭(陕西段)山地生态网络构建

陈南南¹, 康帅直^2,3, 赵永华^2,3,4*, 周煜杰^2,3, 闫瑾¹, 卢雅茹¹

¹长安大学地球科学与资源学院, 西安 710054;
²长安大学土地工程学院, 西安 710054;
³陕西省土地整治重点实验室, 西安 710054;
⁴自然资源部退化及未利用土地整治工程重点实验室, 西安 710054

收稿日期:2020-09-23 接受日期:2021-01-26 出版日期:2021-05-15 发布日期:2021-11-15
通讯作者: *E-mail: yonghuaz@chd.edu.cn
作者简介:陈南南,女,1993年生,硕士研究生。主要从事地理信息系统和遥感在生态领域的应用研究。E-mail:chen1186185048@163.com
基金资助:
国家自然科学基金项目(31670549,31170664)、自然资源部退化及未利用土地整治工程重点实验室开放基金项目(SXDJ2019-03)和中央高校基本科研项目(300102270206,310827172007)资助

Construction of ecological network in Qinling Mountains of Shaanxi, China based on MSPA and MCR model.

CHEN Nan-nan¹, KANG Shuai-zhi^2,3, ZHAO Yong-hua^2,3,4*, ZHOU Yu-jie^2,3, YAN Jin¹, LU Ya-ru¹

¹College of Earth Sciences and Resources, Chang'an University, Xi'an 710054, China;
²College of Land Engineering, Chang'an University, Xi'an 710054, China;
³Key Laboratory of Land Consolidation of Shaanxi Province, Xi'an 710054, China;
⁴Key Laboratory of Degradation and Unused Land Remediation Engineering of the Ministry of Natural Resources, Xi'an 710054, China

Received:2020-09-23 Accepted:2021-01-26 Online:2021-05-15 Published:2021-11-15
Contact: *E-mail: yonghuaz@chd.edu.cn
Supported by:
National Natural Science Foundation of China (31670549, 31170664), the Open Fund of the Key Laboratory of Degradation and Unused Land Remediation Engineering of the Ministry of Natural Resources (SXDJ2019-03) and the Fundamental Research Funds for the Central Universities (300102270206, 310827172007).

摘要/Abstract

摘要： 快速的城市化发展破坏了生境斑块的连通性,而在应对此环境变化中,从斑块层构建区域生态网络的研究不足。本研究以秦岭(陕西段)为对象,采用形态学空间格局分析(MSPA)辨别生态源地,利用最小阻力模型(MCR)提取潜在生态廊道,构建秦岭生态网络;基于重力模型对生态网络内部斑块的重要性进行分级,并分析了网络的结构特征及景观构成。结果表明: 秦岭(陕西段)生态网络由10个生态源地、45条潜在生态廊道和38个脚踏石构成,生态源地总面积29686.15 km²;网络闭合度(0.11)、线点率(1.18)、网络连接度(0.42)、成本比(0.99)综合表明,网络结构中潜在生态廊道和生态节点的连通性较好,而源地间的连通程度低,构建网络的成本较高;重要生态廊道主要由林地、草地、耕地等景观类型构成,其中,林地面积最大,为571.00 km²,约占廊道总面积的89.2%,景观结构良好;在生态网络中应加强保护生态源地,优先建立并保护重要生态廊道和生态节点。研究结果可为秦岭生态环境保护与高质量发展提供科学的参考和依据。

关键词: 生态网络, 生态源地, 重要廊道, 景观连通性

Abstract: Rapid urbanization destroys the ecological network connectivity among habitat patches. The research on the construction of regional ecological network at the patch level is obviously insufficient. The morphological spatial pattern analysis (MSPA) and minimum cumulative resistance (MCR) were used to identify ecological sources and to extract potential ecological corridors in Qinling Mountains, respectively. The ecological network was effectively constructed. We analyzed the structural characteristics and landscape compositions of the network. Based on the gravity model, the importance of patches in the ecological network was graded and the structural characteristics and landscape composition of the network were analyzed. The results showed that there were 10 ecological sources, 45 potential ecological corridors and 38 stepping stones in the ecological network of Qinling Mountains in Shaanxi Province, with a total area of 29686.15 km². There were good connectivity in potential ecological corridors and ecological network nodes as indicated by network closure (0.11), line point rate (1.18), network connectivity (0.42) and cost ratio (0.99). The connectivity between ecological source was low, but the cost of network reconstruction was high. The important ecological corridors were mainly composed of forest, grassland, and cultivated land. Fore-sts accounted for 89.2% of the total corridor area (571.00 km²), indicating the good landscape structure in Qinling Mountains. The protection of ecological source areas must be strengthened, and priority should be given to the establishment and protection of important ecological corridors and ecological nodes. Our results would provide the scientific reference and basis for the ecological environment protection and high-quality development in Qinling Mountains.

Key words: ecological network, ecological source, important corridor, landscape connectivity

陈南南, 康帅直, 赵永华, 周煜杰, 闫瑾, 卢雅茹. 基于MSPA和MCR模型的秦岭(陕西段)山地生态网络构建[J]. 应用生态学报, 2021, 32(5): 1545-1553.

CHEN Nan-nan, KANG Shuai-zhi, ZHAO Yong-hua, ZHOU Yu-jie, YAN Jin, LU Ya-ru. Construction of ecological network in Qinling Mountains of Shaanxi, China based on MSPA and MCR model.[J]. Chinese Journal of Applied Ecology, 2021, 32(5): 1545-1553.

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基于MSPA和MCR模型的秦岭(陕西段)山地生态网络构建

Construction of ecological network in Qinling Mountains of Shaanxi, China based on MSPA and MCR model.

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