高度梯度及其与巴基斯坦斯瓦特的达拉尔山谷植物多样性的相关性,使用多变量分析
Maroof Shah1, Hassan Sher1, Haidar Ali1
1Center for Plant Sciences and Biodiversity, University of Swat, Charbagh, Swat, Khyber Pakhtunkhwa, Pakistan.
BMC ecology and evolution
|October 11, 2025
概括
达拉尔山谷的高度梯度对植物多样性产生了重大影响,不同的高度面临着独特的气候和人类压力. 保护工作必须针对每个区域进行量身定制,以保护植物息地.
科学领域:
- 生态生态学 生态生态学
- 植物学 植物学
- 环境科学 环境科学
背景情况:
- 生物多样性受到气候变化和人类活动的威胁.
- 达拉尔山谷,斯瓦特,因其高度变化而被选中,涵盖了从潮湿温带森林到高山地区 (海拔1400米至5001米) 的各种生态系统. ) 的情况.
研究的目的:
- 为了调查海拔梯度对达拉尔山谷植物多样性的影响,斯瓦特.
- 确定不同的植被区及其相关的生态因素.
主要方法:
- 采用方格采样 (300个方格) 来收集草药,灌木和树木的植物社会学数据.
- 计算了重要性价值指数 (IVI) 并使用了诸如法典对应分析 (CCA) 这样的排序技术.
- 应用了沃德的聚合集群分析来识别植被关联.
主要成果:
- 记录了381种植物种类,其中阿斯特拉,罗莎和拉米亚是最占主导地位的家族.
- 确定了三个不同的植被区:阿尔卑斯山 (3582-5001米),亚阿尔卑斯山 (2900-3580米) 和潮湿温带森林 (1432-2900米).
- 热植物和微叶形态占主导地位,物种丰富度高 (0.99) 和均.
结论:
- 高度梯度显著塑造了Swat的Daral谷的植物多样性,受不同生物和非生物压力的影响.
- 较低的海拔地区面临人为压力 (森林砍伐,过度放牧),而较高的海拔地区面临气候挑战 (温度,降雪).
- 针对性的保护战略对于每个海拔区域至关重要,以确保植物息地和生物多样性的长期可持续性.
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