Wang Weize, Gao Xiaoyan, Cen Chunhua, Jian Mengping, Wang Zijin, Yang Jingyi
College of Forestry Guizhou University Guiyang China.
Ecol Evol. 2024 Aug 15;14(8):e70194. doi: 10.1002/ece3.70194. eCollection 2024 Aug.
The conversion of urban montane forest resources into urban parks requires careful assessment to understand its impacts on plant diversity over time. This study aims to enhance urban biodiversity conservation strategies by analyzing how habitat type and park age affect woody plant diversity. We surveyed woody plant species in 60 sample plots across two different habitats (remnant forest vs. artificial green space) within three mountain parks in Guiyang, China, established at different times. The alpha diversity of saplings/seedlings was significantly higher in remnant forests than in artificial green spaces. Artificial green spaces exhibited more homogenous woody plant composition compared with remnant forests. Newer parks showed greater variation in plant composition between the two habitats than older parks. Indicative species in remnant forests were predominantly native, whereas those in artificial green spaces were mainly ornamental species. The transformation of karst mountainous forests into urban parks leads to the homogenization of woody plant composition and impedes the regeneration of saplings/seedlings. Therefore, it is crucial to manage these conversions carefully and strive to preserve as many native species as possible to support urban plant diversity conservation.
将城市山地森林资源转变为城市公园需要进行仔细评估，以了解其随时间推移对植物多样性的影响。本研究旨在通过分析栖息地类型和公园建成年代如何影响木本植物多样性，来加强城市生物多样性保护策略。我们对中国贵阳三个不同时期建成的山地公园内两种不同栖息地（残余森林与人工绿地）的60个样地中的木本植物物种进行了调查。幼树/幼苗的α多样性在残余森林中显著高于人工绿地。与残余森林相比，人工绿地的木本植物组成更为单一。新建公园在这两种栖息地之间的植物组成差异比旧公园更大。残余森林中的指示物种主要是本地物种，而人工绿地中的指示物种主要是观赏物种。喀斯特山地森林转变为城市公园导致了木本植物组成的同质化，并阻碍了幼树/幼苗的更新。因此，谨慎管理这些转变并努力保护尽可能多的本地物种以支持城市植物多样性保护至关重要。
