An environmental gradient change of Picea mongolica seedling from the center of a forest canopy gap in forest-steppe ecotone in Inner Mongolia Autonomous Region of China  

作　　者：ZOU Chun-jing ZHANG Chao MA Yong-liang XU Wen-duo 

机构地区：[1]Shanghai Key Laboratory of Urbanization ＆ Ecological Restoration, East China Normal University, School of Life Sciences, Shanghai 200062, P. R. China [2]East China Normal University, School of Resources and Environmental Sciences, Shanghai 200062, P. R. China 3 Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P. R. China [3]Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P. R. China

出　　处：《Journal of Forestry Research》2006年第3期221-225,共5页林业研究（英文版）

基　　金：Foundation project： The National Natural Science Foundation of China （No. 39900019, 30070129）

摘　　要：In sandy forest with a forest canopy gap for a period of over 30 years, the spruce（Picea mongolica） seedlings were monitored on two 5-m- wide transects from the center of a large gap into the surrounding forest. The farther they were to the far center, the taller grew the seedling and the more is the number of seedling. There were many seedlings under the canopy but almost all seedlings died before they grow up. Along the forest edge, growth of seedlings was temporarily enhanced by lateral penetration of light from the gap. The implications for natural forest regeneration dynamics are discussed. Our results prove that in P mongolica forest a gap disturbance creates a non-uniform environment for regeneration of the species, and determines that the forest was a non-even aged forest.在有为超过 30 年的一个时期的森林华盖差距的沙的森林里，云杉(Picea 蒙古人集成通信适配器) 幼苗从大差距的中心在二 5-m-wide 横断上被监视进包围森林。他们到过越多远远中心，越多 taller 种了幼苗；更多是幼苗的数字。在华盖下面有许多幼苗，但是在他们长大以前，几乎所有幼苗死了。沿着森林边，幼苗的生长被光的侧面的穿入暂时从差距提高。为自然森林新生动力学的含意被讨论。我们的结果在 P 证明那。蒙古人集成通信适配器森林差距骚乱为种类的新生创造不一致的环境，；决定森林是一个非平的年老的森林。

关 键 词：Picea mongolica Sandy forest Seedling growth Canopy gap Photosynthetically active radiation Soil moisture 

分 类 号：S753.3[农业科学—森林经理学]