摘要
本文研究鹤山亚热带丘陵5个有代表性的人工林群落。通过研究这5个人工林群落的林地生物量、生长量、林内各层次的种类结构、生物量的垂直空间分布结构、叶面积的垂直分布结构和群落的组成结构以及群落的发展动态,揭示这5个人工林的群落学特征。并进一步进行5个群落的生态学比较和评价。研究结果表明,马占相思、大叶相思等豆科纯林具有在贫瘠丘陵地上快生速长的特征,是良好的先锋林。马尾松、湿地松等种类也具有抗贫瘠的特性,但生长不如豆科纯林。利用豆科与乡土树种的混交,生长速度快,发展趋势良好,是目前丘陵山地绿化较为可行的途径。
In this paper, the five man-made forest in Heshan Subtropical Downland and the ecological factors are compared and evaluated on the basis of biomass,productivity, species structure, vertical distribution structure and dynamics. Acacia mangium forest and A. auriculeaformis forest grow quickly in the poor down-land, they are good poineer trees. Pinus massoniana forest and P.elliotii forest grow well in the area, but slower than Acacia forests. It′s bestway to plant clamix species mixed with the fixnitrogen species in recovery vegetation.
基金
中科院重中之重06项目四级课题
关键词
人工林
亚热带丘陵
结构
动态
群落
Man-made forest
Subtropical hill
Biomass
community structure
Community dynamics
