| 基于SRP模型的南雄丹霞梧桐自然保护区生态脆弱性评价 |
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| 引用本文： | 李芮芝,胡希军,,杜心宇,雷雨菁,张伟.基于SRP模型的南雄丹霞梧桐自然保护区生态脆弱性评价[J].西北林学院学报,2021,36(5):152-160. |
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| 作者姓名： | 李芮芝 胡希军 杜心宇 雷雨菁 张伟 |
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| 作者单位： | （1.中南林业科技大学 风景园林学院，湖南 长沙 410004；2.中南林业科技大学 城乡景观生态研究所，湖南 长沙 410004） |
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| 摘 要： | 通过建立生态敏感性-生态恢复力-生态压力度（SRP）模型，利用主成分分析法确定指标权重，对南雄丹霞梧桐自然保护区进行生态脆弱性评价。结果表明:1）从生态敏感性角度，研究区高度脆弱和极度脆弱面积分别为756.50 hm2和773.58 hm2，占比之和>50%，主要集中分布于北部和中部，而主要影响要素为土壤侵蚀强度，其次为距水源距离；2）从生态恢复力角度，研究区不脆弱和轻度脆弱面积分别为777.71 hm2和676.73 hm2，占比之和>50%，主要集中分布于西部和西南部，主要影响要素为生物多样性，其次为植被覆盖度；3）从生态压力度角度，研究区不脆弱和轻度脆弱面积分别为551.33 hm2和1 205.12 hm2，占比之和>60%，主要集中分布于西部及东部，而主要影响要素为GDP密度和人口密度；4）研究区整体生态脆弱性较高，中度及以上脆弱性面积之和达到67.72%，主要集中于研究区的中部和北部，其中生态敏感性对生态脆弱性的影响最大，说明研究区整体生态脆弱性较强，应做好生态保护工作。
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| 关 键 词： | 生态敏感性 生态恢复力 生态压力度 生态脆弱性 南雄丹霞梧桐自然保护区 |
Ecological Vulnerability Assessment Based on SPR Model in Nanxiong Danxia Indus Nature Reservation Area |
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| LI Rui-zhi,HU Xi-jun,' target="_blank" rel="external">,DU Xin-yu,LEI Yu-jing,ZHANG Wei. Ecological Vulnerability Assessment Based on SPR Model in Nanxiong Danxia Indus Nature Reservation Area[J].Journal of Northwest Forestry University,2021,36(5):152-160. |
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| Authors: | LI Rui-zhi HU Xi-jun " target="_blank">' target="_blank" rel="external"> DU Xin-yu LEI Yu-jing ZHANG Wei |
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| Institution: | (1.College of Landscape Architecture,Central South University of Forestry & Technology,Changsha 410004,Hunan,China; 2.Institute of Urban and Rural Landscape Ecology,Central South University of Forestry & Technology,Changsha 410004,Hunan,China) |
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| Abstract: | The ecological vulnerability of Danxia Indus Nature Reserve in Nanxiong District was evaluated by establishing the ecological sensitivity-ecological restoration-ecological pressure (SRP) model and by using principal component analysis to determine the index weight.The results showed that 1) from the perspective of ecological sensitivity,the highly vulnerable and extremely vulnerable areas in the study area were 756.50 and 773.58 hm2,respectively,accounting for more than 50% of the total area.The vulnerable area were mainly distributed in the north and the central part.The main influencing factor was soil erosion intensity,followed by the distance from the water source.2) From the perspective of ecological resilience,the not vulnerable and mild vulnerable areas in the study area were 777.71 and 676.73 hm2,respectively,accounting for more than 50% of the total area.They were mainly distributed in the west and southwest part,and the main influencing factor was biodiversity,followed by vegetation coverage.3) From the perspective of ecological pressure,the not vulnerable and mild vulnerable areas in the study area were 551.33 and 1 205.12 hm2,respectively,accounting for more than 60% of the total area.They were mainly distributed in the west and east parts,and the main influencing factors were GDP density and population density.4) Generally,the overall ecological vulnerability of the study area was relatively high,the areas with moderate and above vulnerability accounted for 67.72%,mainly concentrated in the middle and north parts of the study area,among which ecological sensitivity had the greatest impact on ecological vulnerability,indicating that the overall ecological vulnerability of the study area was relatively high,ecological protection should be done properly. |
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| Keywords: | ecological sensitivity ecological resilience ecological pressure ecological vulnerability Nanxiong Danxia Indus Nature Reserve |
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