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首页> 外文期刊>Mountain Research & Development >Species Diversity Patterns in Natural Secondary Plant Communities and Man-made Forests in a Subtropical Mountainous Karst Area, Yunnan, SW China
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Species Diversity Patterns in Natural Secondary Plant Communities and Man-made Forests in a Subtropical Mountainous Karst Area, Yunnan, SW China

机译：中国云南亚热带山地喀斯特地区天然次生植物群落和人工林的物种多样性格局

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摘要

We quantified plant diversity patterns according to changes in species composition, floristic richness, and species diversity in various plant communities in the Shilin karst area (24 deg 38' -24 deg 58' N, 103 deg 11' -103 deg 29' E, altitude 1600-2203 m) of central Yunnan, China, in which the previous land use had been documented. Cluster analysis of floristic similarity of all the stands showed that plant species composition and diversity were primarily influenced by the legacies of land use (as coppices, pastures, and plantations). The DCA (detrended correspondence analysis) grouped 14 sampling transects into 3 plant communities, including a shrubland, a mixed deciduous and evergreen broad-leaved stand (secondary forest), and a premature semihumid evergreen broad-leaved stand (natural premature forest), along a disturbance gradient. We also analyzed Pinus plantations. While plant species diversity was particularly low in the Pinus plantation, stands developing (secondary forest) on former coppice sites were becoming increasingly similar to the natural premature forest. The results would indicate that vegetation and plant species diversity is more efficiently restored by letting degraded vegetation regrow rather than establishing plantations.
机译：我们根据士林喀斯特地区（24 deg 38'-24 deg 58'N，103 deg 11'-103 deg E，29 deg，E）的各种植物群落中物种组成，植物丰富度和物种多样性的变化来量化植物多样性模式。中国云南中部海拔1600-2203 m），以前的土地利用已被记录在案。所有林分植物区系相似性的聚类分析表明，植物物种的组成和多样性主要受土地利用遗产（如林地，牧场和人工林）的影响。 DCA（去趋势对应分析）将14个样点分为3个植物群落，包括灌木丛，落叶和常绿阔叶阔叶林（次生林）和过早的半湿性常绿阔叶林（天然早林）。干扰梯度。我们还分析了松树人工林。尽管松属人工林的植物物种多样性特别低，但在原先的小灌木林地上生长的林分（次生林）与天然早熟林越来越相似。结果表明，通过让退化的植被重新生长而不是建立人工林，可以更有效地恢复植被和植物物种的多样性。

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