天童国家森林公园废弃采石场植被自然恢复早期阶段的种群动态及生物量的研究

对天童国家森林公园废弃采石场植被自然恢复早期阶段的种群动态及生物量研究表明，采石废弃地植被自然恢复早期阶段的群落种类组成非常简单，只有木荷、马尾松两个种；两种群的密度动态趋势为先升后降，最大密度分别出现在３ 龄、４ 龄；马尾松地上部分生长速度明显高于木荷；群落中马尾松总生物量是木荷的１２ 倍多，木荷分配到叶和根中的生物量比例高于马尾松，而马尾松分配到茎中的比例高于木荷．这说明在采石迹地早期演替阶段马尾松以快速生长方式在竞争中处于优势地位．对采石迹地和砍伐迹地演替早期阶段的群落特性进行了比较，并对植被有效恢复进行了讨论

Dynamics of population and biomass at early natural recovery stage of vegetation on abandoned quarry of Tiantong National Forest Park

The study shows that the species composition of the community on the abandoned quarry was very simple,with only two species, Schima superba and Pinus massoniana . The trends of density dynamics of the two populations were up first and then down, with the highest densities at three and four years old, respectively. The aboveground growth of P.massoniana was faster than S.superba , and its total biomass was 12 times more. The proportion of biomass in leaves and roots of S.superba was higher, while in stems was lower than P.massoniana . It is suggested that by fast growing, P.massoniana was dominant in competition at early succession stage on the abandoned quarry. The characters of communities at the early succession stage were also compared between the quarry site and the clear cutting site, and the effective recovery of vegetation was discussed in this paper.