基于ZONATION的岷山山系多物种保护规划

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 基于ZONATION的岷山山系多物种保护规划 DOI: 10.5846/stxb201403170458 作者: 作者单位: 中国林业出版社 作者简介: 通讯作者: 中图分类号: 基金项目: 林业公益性行业科研专项(201404422) Zonation-based conservation planning for multiple species in Minshan, China Author: Affiliation: China Forestry Press Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:空间布局不尽合理是我国的自然保护区发展面临的问题之一,优化现有的自然保护区体系是在资源有限的情况下实现自然保护区的保护效益最大化的最佳途径。以岷山地区为主要研究区域,以25种珍稀濒危物种为主要研究对象,通过MAXENT与ZONATION模型模拟,鉴别出岷山地区珍稀濒危物种保护优先区,并提出了自然保护区空间选址的优化方案。研究结果表明,(1)在物种出现点记录较少的情况下,MAXENT模型依然能够比较准确地预测出物种的分布状况;(2)目前建立的保护区对25个物种的平均保护比例为51.8%;(3)通过ZONATION鉴定的优先区总面积为19958.7 km2,岷山地区现有的29个自然保护区只保护了目标优先区的47.1%,九寨沟中部与南部,平武北部,平武与北川的交界处,北川西北部等地都存在保护空缺。建议在保护空缺的6个地方新建或扩建自然保护区,并在规划时考虑这些区域内部的优先次序。新提出的保护体系能将物种栖息地的保护比例提高至77.9%。研究结果对于岷山及全国其他生物多样性保护关键地区保护体系的规划都具有重要的借鉴意义。 Abstract:Irrational spatial patterns are one of the main problems for nature reserve development. Optimization of current nature reserve systems is one of the best approaches for achieving maximal conservation biodiversity effectiveness with limited conservation resources. In this study, habitat evaluation and priority identification were undertaken in the Minshan Mountains in southwest China, one of the most important areas for biodiversity conservation in the world. A total number of 25 endangered species, including 15 mammals and 10 birds, were selected to identify priority areas based on MAXENT and ZONATION, which were further used to optimize the current nature reserve systems. In total, 3213 occurrence points for the 25 species, and several environmental variables, including the Wide Dynamic Range Vegetation Index from MODIS data, slope and aspect from DEM data, and distance to roads and residential areas, were selected for habitat modeling. The results showed that(1) MAXENT could predict the distributions of study species well with relatively small numbers of occurrence records;(2) Average ratio for the 25 species' habitats in the current nature reserve systems was 51.8%;(3) The total area of the priority areas was 19958.7 km2, only 47.1% of which had been protected in the existing nature reserves, and protection gaps existed in the middle and south of Jiuzhaigou County, the north of Pingwu County, and the border between the southwest of Pingwu County and the Northeast of Beichuan County. Therefore, it was proposed to build new nature reserves or expand the existing nature reserves in 6 protection gap areas, and to take the priority rank within the areas into account during future planning. After expansion of the reserves in the six key areas, the proportion in new nature reserves to the entire area will increase to 33.3% from the current 23.8%.The average ratio for the 25 species could be raised to 77.9%, with a net increase of 26.1% compared to the current ratio. Finally, species with small habitat areas will have a high proportion of habitat protected in the new reserve planning regime. The approach used in this study could be applied to other biodiversity hotspots in China. 参考文献 相似文献 引证文献