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1978年的春天,一项被誉为“世界生态之最”的工程——三北防护林工程,在我国辽阔的西北、华北、东北的大地上开始了。20多年来,从巴颜喀拉山到河西走廊、从柴达木盆地到内蒙古高原、从汾河流域到渤海之滨,三北防护林就如同一道绿色的长城,蜿蜒屹立在我国几乎一半的国土上,遮风雨、固泥沙,护卫着中华民族的母亲河。这一工程对加快我国经济建设、改善生态环境起了重要的作用。但是在建设之初,由于对生物多样性的重要性认识不足,所选树种多为杨树。虽然这个树种生长快、适应力强,但是物种过于单一的生态环境,使北方的主要森林害虫——天牛危害成灾。被当地人民称为“无烟火灾”的害势,在三北地区551个县、旗的330多个中蔓延。昔日那些傲然耸立,像
In the spring of 1978, a project known as “the most ecological of the world” - the Three North Shelterbelt Project started on the vast land of northwest, north and northeast China. For more than 20 years, from the Bayan Harness to the Hexi Corridor, from the Qaidam Basin to the Inner Mongolia Plateau, and from the Fen River Valley to the coast of the Bohai Sea, the Three North Shelter Belt is like a green Great Wall, meandering almost halfway through China On the territory, wind and rain, solid silt, guarding the mother river of the Chinese nation. This project has played an important role in accelerating our economic construction and improving the ecological environment. However, at the beginning of construction, due to the lack of understanding of the importance of biodiversity, most of the selected tree species are poplars. Although this species grows fast and has strong adaptability, the species’s overly single ecological environment makes the major forest pest - Described by the local people as “a smoke-free fire”, it spread in more than 330 of the 551 counties and flags in the Three North regions. Those who stand proudly in the past, like