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Remote Sensing for Natural Resources    2025, Vol. 37 Issue (2) : 194-203     DOI: 10.6046/zrzyyg.2023376
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Construction of an ecological security pattern in the Guanzhong Plain based on ecosystem services
HUI Le1(), WANG Hao1(), LIU Jiamin1, TANG Butian1, ZHANG Weijuan2
1. School of Geography and Tourism of Shaanxi Normal University, Xi’an 710119, China
2. College of Marxism, Fujian Normal University, Fuzhou 350117, China
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Abstract  

The ecological security pattern serves as an indicator of ecosystem health and sustainability, playing a crucial role in enhancing human well-being. This study identified ecological source areas in the Guanzhong Plain based on three ecosystem services, including water conservation, soil conservation, and habitat provision. Considering regional characteristics, this study selected soil erosion sensitivity index, normalized difference vegetation index (NDVI), and nighttime lighting as disturbance factors to correct the basic resistance surface and identify ecological corridors. The results indicate that the primary and secondary ecological source areas in the Guanzhong Plain cover 3 011.85 km2 and 8 434.51 km2, respectively, corresponding to 5.22% and 14.62% of the total area. These areas, characterized by mountainous terrain and high vegetation cover, are primarily distributed in the Qinling Mountains in the south, the hilly and gully regions in northern Baoji City, and the junctions of Xianyang, Tongchuan, and Weinan cities. The resistance surface correction for Guanzhong Plain reduced 61 ecological corridors (total length: 1 613.4 km), leading to significant changes in their distribution, and ultimately rationalizing corridor identification. Overall, this study provides a novel case for constructing regional ecological security patterns and data support for ecological conservation and urban planning in the Guanzhong Plain.
Keywords Guanzhong Plain      ecological security pattern      ecosystem services      ecological corridor     
ZTFLH:  TP79  
Issue Date: 09 May 2025
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Le HUI
Hao WANG
Jiamin LIU
Butian TANG
Weijuan ZHANG
Cite this article:   
Le HUI,Hao WANG,Jiamin LIU, et al. Construction of an ecological security pattern in the Guanzhong Plain based on ecosystem services[J]. Remote Sensing for Natural Resources, 2025, 37(2): 194-203.
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https://www.gtzyyg.com/EN/10.6046/zrzyyg.2023376     OR     https://www.gtzyyg.com/EN/Y2025/V37/I2/194
Fig.1  Location of the study area
数据名称 数据来源 数据描述 数据用途
土地利用 http://www.gscloud.cn/ 人工解译2020年Landsat8影像 计算综合阻力面中区位动力指标
气象数据 http://www.geodata.cn/ 基于地形因子采用全国气象站点数据插值并计算平均值获得 计算水源涵养、生物栖息地提供和水土流失敏感性指标
土壤数据 https://www.resdc.cn/ 基于第二次土壤普查数据获得 计算水源涵养、土壤保持和水土流失敏感性指标
高程数据 http://www.gscloud.cn/ 基于此产品计算坡度 计算水源涵养、生物栖息地提供和本底条件指标
植被覆盖 https://www.resdc.cn/ 基于归一化植被指数数据产品获得 计算水土流失敏感性指数和本底条件指标
净初级生产力 http://www.geodata.cn/ Carnegie-Ames-Stanford Approach(CASA)模型计算获得 计算水源涵养、土壤保持和生物栖息地提供指标
基础地理数据 http://ngcc.sbsm.gov.cn/ 行政区划、道路交通、河流水系等数据 计算综合阻力面中区位动力指标
Tab.1  Data sources used for the study
Fig.2  Technology roadmap
扩张类型 生态用地扩张
阻力因子		 赋值 方向赋值 权重
1 3 5 7 9
本底条件 高程/m [0,200) [200,350) [350,500) [500,650) [650,3 800) 正 0.2
坡度/(°) [0,8) [8,15) [15,25) [25,35) [35,90) 正 0.2
植被覆盖度 (0.5,1] (0.4,0.5] (0.3,0.4] (0.2,0.3] [0,0.2] 负 0.2
土地利用类型 林地 水域 草地 耕地 建设及未利用地 正 0.4
区位动力 距主要道路距离/km [0,1) [1,1.5) [1.5,2) [2,3) ≥3 负 0.45
距居民点距离/km [0,1.5) [1.5,3) [3,5) [5,7) ≥7 负 0.55
生态阻力 土壤保持重要性 一般重要 轻度重要 中度重要 高度重要 极重要 负 0.4
水源敏感性 一般重要 轻度重要 中度重要 高度重要 极重要 负 0.35
生物多样性 一般重要 轻度重要 中度重要 高度重要 极重要 负 0.25
Tab.2  Evaluation index of resistance surface in the study area
Fig.3  Evalution of ecosystem service importance and identification of ecological source areas
生态系统服务
重要性评价		 水源涵养 土壤保持 生物栖息地提供
一般重要 14 391.17 1 698.07 2 807.03
轻度重要 20 946.63 9 708.81 18 475.48
中度重要 10 694.14 21 241.56 15 780.17
高度重要 6 335.01 17 444.72 11 678.72
极重要 2 564.98 4 738.22 6 205.42
Tab.3  Evaluation results of ecosystem service importance (km2)
Fig.4  Ecological sensitivity assessment and calculation results of resistance surface
城市 平均水土流
失敏感性值		 平均归一化
植被指数值		 平均夜间
灯光值		 平均基本
阻力值		 平均修正
阻力值
宝鸡 0.09 0.82 0.001 0.52 0.003
咸阳 0.23 0.70 0.007 0.61 0.005
铜川 0.12 0.79 0.002 0.63 0.004
渭南 0.22 0.68 0.003 0.68 0.005
西安 0.13 0.75 0.019 0.55 0.005
Tab.4  Average value of soil erosion sensitivity index, normalized difference vegetation index and nighttime lighting in cities of Guanzhong Plain
Fig.5  Ecological corridor of the Guanzhong Plain before and after resistance surface correction
Fig.6  Ecological security pattern of Guanzhong Plain
城市 生态廊道长度 生态廊道
长度变化
基本阻力面 修正阻力面
宝鸡 6 041.02 5 445.91 -595.11
咸阳 2 750.40 1 509.09 -1 241.31
铜川 266.73 377.98 111.25
渭南 1 876.60 1 460.57 -416.03
西安 3 678.54 4 206.35 527.81
Tab.5  Changes in the length of ecological corridors before and after resistance surface correction in the Guanzhong Plain (km)
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