中文摘要：

以植物群系为指标,采用亲和度分析法测度湖北省的植被格局多样性。研究结果表明,湖北省植被格局的镶嵌多样性值（mosaic diversity,m）为4.071,景观复杂,不存在明显的生态梯度。根据平均亲和度（mean affini-ties,MA）,可将湖北省的植被划分为3类：第一类为中心点,位于中心点的植被比较典型和常见,对联结整个景观的各斑块起着关键的作用,包括武汉市、襄阳市、黄冈市和随州市等4个分区;第二类为外点,位于外点的植被较为珍稀,多为当地特有,对构成整个植被格局的独特性和多样性意义重大,包括鹤峰县、利川市和咸丰县等3个分区;第三类为中间点,位于中间点的植被普遍度和稀有度适中,占据了较多的生境空间,是构成整个湖北省植被格局的基础,包括黄石市、荆州市、荆门市、宜昌市等14个分区。将平均相似性值（mean similarity,MS）从中心点到外点排序,结果表明,毗邻地区相似性高,鄂东北、鄂西北、鄂东南以及江汉平原构成了整个植被格局的普遍性,鄂西南则构成其独特性。湖北省植被格局东部和西部差异较大,比较复杂。

英文摘要：

Taking formation as an index, the vegetation pattern diversity of Hubei Province was measured by affinity analysis. Results showed that mosaic diversity （m） of the Hubei Province vegetation landscape was 4. 071, the landscape was complicated and there was no obvious ecological gradient. According to mean affinities （ MA）, the Hubei Province vegetation pattern was divided into three categories： the first central point category included vegetation from Wu- han City, Xiangyang City, Huanggang City and Suizhou City, which were typical, common, and played a key role in coupling patches in the whole vegetation pattern; the second outer point category included vegetation from Hefeng County, Lichuan City and Xianfeng County, which were rare, native and had important significance in composing the specificity and diver- sity of the whole landscape; the third middle point category included vegetation from Huangshi City, Jingzhou City, Jingmen City, and Yichang City （totally 14 administrative division units）, which showed universality and rarity, were moderate, occupied more habitat space, and con- stituted the foundation of the whole vegetation pattern. Sorting mean similarity （MS） from cen- tral points to outer points showed that the similarity of adjacent regions was high. Northwest,Southeast and the Jianghan plain of Hubei formed the universality of the whole vegetation pat- tern; however Southwest Hubei constituted the specificity of the vegetation pattern. Large differences existed in the vegetation patterns between east and west Hubei Province, and the vegetation patterns were complicated.