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Remote Sensing for Land & Resources    2020, Vol. 32 Issue (4) : 219-226     DOI: 10.6046/gtzyyg.2020.04.27
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A study on regional ecological barrier construction based on landscape ecological risk
JIANG Lei1(), HAN Weizheng1, SUN Lina2
1. Changchun Urban and Rural Planning and Design Institute, Changchun 130022, China
2. Department of Environmental Science and Engineering, Changchun Institute of Technology, Changchun 130022, China
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Abstract  

Carrying out territory virescence action and ecological barrier construction is one of the important measures of eco-civilization construction in China. At present, the ecological problems in the northwestern part of Changchun economic circle are relatively prominent, which have become the shortcoming of regional ecological security. Based on the ecological background characteristics and main ecological problems of the study area, the authors constructed a quantitative assessment method for landscape ecological risk including ecological barrier factor. The results are as follows: ① The key areas of ecological barrier construction in the study area include two categories: areas where landscape ecological risk is relatively high, and areas where ecological barrier construction is relatively weak; ② the areas with relatively high landscape ecological risk are mainly distributed in the central part of Nong’an County, accounting for 1.25% and 1.74% of the total area of the study area; ③ the relatively weak areas of ecological barrier construction are the areas where the landscape ecological risk increases after the introduction of ecological barrier factor, mainly distributed in the border zone between Changlin County and Nong’an County, accounting for about 1/4 of the total area. Based on the comprehensive problem-oriented and target-oriented approach, the authors put forward strategies from two aspects of strengthening the control of landscape ecological risk and promoting ecological construction in relatively weak areas, so as to promote the high-quality and sustainable development of Changchun economic circle. This study provides not only a feasible idea for the study of regional ecological barrier construction and related ecological planning but also a useful reference for the optimization of land space spatial pattern.
Keywords ecological barrier      landscape ecological risk assessment      ecological security      optimization of land space spatial pattern      Changchun economic circle     
:  TP79  
  X826  
Issue Date: 23 December 2020
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Lei JIANG
Weizheng HAN
Lina SUN
Cite this article:   
Lei JIANG,Weizheng HAN,Lina SUN. A study on regional ecological barrier construction based on landscape ecological risk[J]. Remote Sensing for Land & Resources, 2020, 32(4): 219-226.
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https://www.gtzyyg.com/EN/10.6046/gtzyyg.2020.04.27     OR     https://www.gtzyyg.com/EN/Y2020/V32/I4/219
Fig.1  Location of study area
序号 遥感解译地类 景观生态类型
1 草地 草地
2 旱地、水田 耕地
3 采矿场、工业用地、交通用地、居住地 建设用地
4 森林 林地
5 河流、湖泊、沼泽、水库/坑塘、运河/水渠 湿地
6 裸土、沙漠/沙地、盐碱地 未利用地
Tab.1  Comparison table of remote sensing interpretation land types and landscape ecological types in study area
Fig.2  Landscape ecological types and sampling units of study area
Fig.3  Flow chart of research method
Fig.4  Spatial distribution of landscape pattern indexes of study area
Fig.5  Original result of landscape ecological risk assessment of study area (grading)
Fig.6  Spatial distribution of corrected result of landscape ecological risk assessment and related indexes of study area
Fig.7  Corrected result of landscape ecological risk assessment of study area (grading)
序号 分级 生态风险评价
修正值范围		 面积/km2 占研究区总
面积比例/%
1 低风险 [1.0,2.0) 2 497.6 21.03
2 较低风险 [2.0,9.0) 7 130.2 60.04
3 中等风险 [9.0,26.0) 1 892.3 15.94
4 较高风险 [26.0,68.0) 207.0 1.74
5 高风险 [68.0,169.8] 148.2 1.25
Tab.2  Compartment area of in corrected result of landscape ecological risk assessment of study area
序号 差值 分区 面积/km2 占比/%
1 -4,-3 显著降低 1 022.61 8.61
2 -2,-1 略有降低 5 566.87 46.88
3 0 基本不变 2 299.33 19.36
4 1,2 略有提高 2 946.46 24.81
5 3,4 显著提高 39.94 0.34
Tab.3  Compartment area of in corrected result of landscape ecological risk assessment of study area
Fig.8  Comparison result of landscape ecological risk assessment of study area
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