基于MaxEnt模型的广西黑颈长尾雉潜在栖息地预测与保护空缺分析

Potential Predation and Conservation Vacancy Analysis of Syrmaticus humiae in Guangxi Based on MaxEnt Model

了解物种生境的空间分布以及和环境因子的关系,对物种的保护有重要意义。黑颈长尾雉Syrmaticus humiae作为在广西壮族自治区分布的鸟类,通过查阅文献与分布名录得到其分布点,以GIS空间技术运用Max Ent模型对区内黑颈长尾雉的生境适应性和其主要影响因子进行分析,模型评价结果为优秀水平。通过划分出的适宜生境和现有保护区进行保护空缺分析。模型预测黑颈长尾雉的生境适宜区主要分布在广西的西北区域,适宜生境总面积为6 771.84 km^2,已建立的保护区覆盖了16.72%的适宜生境,尚有4 985.86 km2的适宜生境在保护区之外。为更有效地实行保护,应对保护空缺区域进行填补。

It is very important to understand the distribution of the living space and the relationship with the environmen-tal factors. Guangxi Zhuang Autonomous Region is one of the distribution areas of Hume＇s pheasant （ Syrmaticus humiae） . In this study, the distribution points were collected by searching the literature and distribution lists, and the MaxEnt model of GIS spatial technology was used to get the main influencing factors and adaptability habitat. The results of model evalua-tion were confirmed to be excellent. Gap analysis was conducted by delineating suitable habitats and existing nature re-serves. The habitat suitable area predicted by the model was mainly distributed in the northwestern region of Guangxi, and the total suitable habitat area was 6 771. 84 km^2. The established protected areas covered 16. 72% of the suitable habitat. However, there were still 4 985. 86 km2 of suitable habitats outside the protected area. For more effective protection, the vacant areas should be enriched in the future.