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大江大河营造防护林具有防洪、促淤、护堤等工程效益,这是防护林能得以存在和发展的主要原因。笔者结合多年从事堤防绿化工作的实践,谈谈怎样使防护林在汛期防汛中处于最佳状态的一点体会。一、依据防汛要求确定林带位置众所周知,防护林在汛期中工程效益显著,但是营造防护林必须服从整体治理和防汛的需要,科学对待,否则不但起不到工程作用,而且还会影响泄洪,破坏堤防。例如,防护林带远离大堤就起不到防浪作用,还会阻水影响泄洪。相反,林带离堤脚太近甚至充
The protection of the major rivers and rivers to create shelterbelt flood control, silt, berm and other engineering benefits, which is shelterbelt can exist and the main reason for the development. The author combined with many years engaged in embankment afforestation practice, talk about how to make shelterbelt in flood season in the best condition of a little experience. First, according to flood control requirements to determine the location of shelterbelt It is well known that the shelterbelt in the flood season, the project efficiency is significant, but to create a shelterbelt must comply with the overall governance and flood control needs, scientific treatment, otherwise not only fail to play a role in engineering, but also affect flood discharge and destroy dikes. For example, shelterbelts can not withstand wave-preventing effects as they are far away from the levee, and they can also prevent water from spilling. On the contrary, the forest belt is too close to filling or even filling