期刊论文

Ecological Vulnerability Assessment Based on SPR Model in Nanxiong Danxia Indus Nature Reservation Area

中文

西北林学院学报

1001-7461

2021

36

5

152-160

10.3969/j.issn.1001-7461.2021.05.23

国家林业局野生植物保护项目（2016ZWZY06）； 国家林业和草原局重点学科（风景园林学）（林人发[2016]21号）； 湖南省高等学校“双一流”建设项目（湘教通[2018]469号）；

本校为第一机构

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 hm~2和773.58 hm~2,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 hm~2和676.73 hm~2,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 hm~2和1 205.12 hm~2,占比之和＞60%,主...

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 hm~2,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 fac...