文献类型：期刊文献

中文题名：绿洲防护林体系缓解霜冻作用的调查研究

英文题名：Effect of Alleviating Frost of Oasis Protection Forest System

作者：张景波[1] 王志刚[1]

第一作者：张景波

机构：[1]中国林业科学研究院沙漠林业实验中心

年份：2008

期号：5

起止页码：14-16

中文期刊名：防护林科技

外文期刊名：Protection Forest Science and Technology

语种：中文

中文关键词：河套平原;冻害;防护林

外文关键词：Hetao Plain; freezing injury ; protection forest

分类号：S727.2

摘要：通过对2004年5月3日晨发生在内蒙古河套平原的大面积霜冻调查显示,绿洲防护林在减轻霜冻方面具有明显作用。由于树体降温放热、林网对气流的阻挡作用以及林冠层对热辐射的影响等,防护林结构较完整的区域冻害明显轻于防护林不够完整的区域;寒流进入林网区后,产生霜冻的能力随纵深距离增大而逐步衰减。加强绿洲防护林体系建设、完善林网结构、重视农田周围闲散荒地的造林绿化对缓减霜冻具有重要意义。
Large-area frost which was occurred on the Hetao Plain of Inner Mongolia on May 3,2004 were investigated. The result shows that protection forest system have significant effcts of reducing frost. Freezing injury is more lighter in the better protection forest than that of not, because of the heat release ＆ cooling of trees, windbreak of the forest network and effect of canopy layer on calorific radiation ; in the protection forest, the ability of the frost attenuates with the increase of distance on the edge of it. It is very important to strengthen the construction of protection forest system ,to perfect the structure of forest network and to pay attention to planting trees at the area around the farmland for frost alleviation.