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封山育林,就是对植被盖度较低(0.2以下)的荒山,通过严格的人工封禁,从而提高植被盖度,达到保持水土,实现生态环境优化的一种自然生态恢复工程。实施封山的区域,一般选择在人畜活动较少、自然条件相对较差的深山远山。太行山以石灰岩为主,植被稀少,水土流失严重,土层瘠薄,条件恶劣。这给太行山绿化增加了不少难度。统计资料表明,太行山区年降雨量在500毫米左右,多集中于夏季。首先选择好地域。浅山和片麻岩山区,可以通过爆破等大规模整地发展经济林、用材林。而石灰岩山区就不宜采用这种模式,应选择山场面积较大、人畜活动相对较少的“深山”、“远山”区封禁,另外要注意选择人均山场面积达10亩以上的地区。山场面积过
Closing hillsides for afforestation is a natural ecological restoration project for maintaining the soil and water and achieving the optimization of ecological environment through strict artificial closure to the barren hills with low vegetation cover (0.2 or below). Closure of the implementation of the region, the general choice of less human and animal activities, the natural conditions are relatively poor mountains. Limestone is the main part of the Taihang Mountains. There are few vegetation, serious soil erosion, poor soil conditions and poor conditions. This adds a lot of difficulty to the greening of the Taihang Mountains. Statistics show that the Taihang Mountains annual rainfall of about 500 millimeters, mostly concentrated in the summer. First select a good area. Shallow mountain and gneiss rock mountain, you can blasting and other large-scale development of economic land, land use timber. The limestone mountainous areas should not adopt this model, should choose a larger mountainous area, relatively less human and animal activities “mountain ”, “mountain” area ban, also pay attention to choose the per capita mountainous area of 10 acres Above the area. Mountain field area over