长江中下游四省森林植物多样性初步分析

A Preliminary Analysis on Forest Biodiversity of Four Provinces along the Middle and Lower Reaches of Changjiang

分析了长江中下游湘、赣、鄂、皖四省的森林植物多样性现状和潜在危机。统计结果表明，该区植物（包括种子植物、蕨类植物和苔藓植物）物种多样性水平估计为１万种，具古老性、特有性、稀有性和复杂性等特点。该区生物多样性现状是不容乐观的，物种、基因和生态系统诸层次的多样性均受不同程度的破坏，它对经济持续发展、环境保护等方面有潜在的负面影响。提出了该区生物多样性保护的若干对策。

This paper dealt with forest biodiversity of four provinces, Hunan, Jiangxi, Hubei, and Anhui, along the middle and lower Changjiang, focusing on the current biodiversity state and its potential crisis. Based on a diagnostic census, this forest flora embraces nearly 10000 species of higher plants, e.g. seed plants, pteridophytes, and bryophytes. The flora is significantly characteristic, namely,primitive, endemic, rare, and complicated. Unfortunately, the biodiversity on the levels of gene, species, and ecological system is more or less suffering fragmentation or damage, which may have negative effects on sustainable economic devolopment and enviroment protection. In addition, the authors proposed several conservation strategies for this forest biodiversity.