粤北4个保护区广东松群落特征比较

应用植被样方调查法研究了粤北的英德石门台、曲江罗坑、南岭乳阳八宝山和乐昌杨东山十二度水自然保护区的广东松群落的维管植物种类组成、数量优势科和乔木层优势种,比较分析了4个研究地点的物种和群落的相似性。结果表明,物种相似性系数与地理距离呈正相关,乔木层树种及群落的相似性系数无明显规律。各地数量优势科均由壳斗科、樟科、杜鹃花科、山茶科等亚热带常绿阔叶林表征科组成。乔木层共有优势种为广东松、五列木、乌冈栎、金毛柯、深山含笑、厚叶楠、岭南槭等。广东松种群年龄结构分析表明,所有样地的广东松种群均处于中衰至衰退阶段,为维护该濒危保护植物的可持续发展,有必要进行人工繁殖。

Comparison of the Characteristics of Pinus kwangtungensis Community at four Nature Reserves in North of Guangdong

The species composition of vascular plants and family floristic elements of seed plants in Pinus kwangtunensis community at four nature reserves named Shimentai of Yingde,Luokeng of Qujiang,Ruyang Babaoshan of Nanling,and Shierdushui of Lechang in north of Guangdong were studied by using the quadrat method.The similarity of species and community of these four research sites were also analyzed.The results showed that there is a positive relationship between species similarity coefficient and the distance,but...