摘要
处于亚热带与暖温带过渡地带的河南省南部为马尾松的分布北界,淮河流域上游的桐柏县淮源镇、驻马店市薄山林场两地广泛分布有马尾松林,对其林内的林窗特征进行调查研究,分析不同林窗大小对土壤种子库、幼苗、物种多样性的影响。结果表明:林分内形成的林窗以中小型为主,平均林窗大小为46.2 m2;林窗大小对土壤种子库、幼苗幼树、物种多样性等有一定影响,从而影响森林更新;林窗面积分别为40～60 m2时,森林更新具有较好的基础,但不一定对马尾松有利。在森林经营管理过程中,应根据需要形成适当大小的林窗,以保持森林的自然更新。
The northern boundary of Pinus massoniana is in the ecotone of sub-tropic and warm temperate zone in the south part of Henan Province,the P.massoniana forest is widely distributed in Huaiyuan Township of Tongbai County and Boshan State Forest Farm in Zhumadian Municipality which are located at the upper reaches of the Huaihe River.The characteristics of canopy gaps in the P.massoniana forests were surveyed,and the effect of gap size on soil seed bank,seedling properties and species diversity was analyzed.The results showed that the gap size in these P.massoniana stands was mainly small and medium in size with the average area of 46.2 m2.The gap size could affect the forest regeneration through the influence on soil seed bank the quality and quantity of the seedlings and species diversity.The forest might be better regenerated when the gap size was around 40-60 m2,which did not necessarily mean to be beneficial to the regeneration of P.massoniana.It was proposed that suitable gap size should be formed in the forest management so as to maintain the natural regeneration of P.massoniana forest.
出处
《西南林业大学学报（自然科学）》
CAS
2013年第2期52-56,共5页
Journal of Southwest Forestry University：Natural Sciences
基金
国家科技部重大专项(2008ZX07526-002-03)资助
淮河水利委员会科技支撑项目(2007-2009)资助
河南省教育厅自然基金项目(2009A220003)资助
关键词
马尾松林
林窗
种子库
幼苗
森林更新
淮河上游
Pinus massoniana forest
canopy gap
seed bank
seedlings
forest regeneration
Huaihe River
