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贵州地处长江、珠江两大水系的上游。抓好旨在恢复和扩大森林植被,遏制水土流失,减少自然灾害,改善生态环境和农业生产条件的全省防护林体系建设工程,对于保护生态环境,减少长江、珠江中下游地区洪涝灾害的发生,促进可持续发展具有重要的现实意义。 贵州“七·五”林业科研结果表明,全省水土流失主要来自于坡耕地。鉴于目前贵州农村生产力水平较低,还有不少农民尚未解决温饱这一实际,营建坡耕地防护林,应推行复合农林业,即在坡耕地上合理安排农、林、草、果、药种植。这样,不仅时效长,而且能使农民增收,从而有利于调动农民退耕的积极性。
Guizhou is located in the Yangtze River, Pearl River two upstream. Do a good job in the restoration and expansion of forest cover, curb soil erosion, reduce natural disasters, improve the ecological environment and agricultural production conditions of the province’s shelterbelt construction project for the protection of ecological environment, reduce the Yangtze River, the Pearl River midstream and downstream areas of floods, Promote sustainable development has important practical significance. Results of the “Seventh Five-year” Forestry Research in Guizhou Province show that soil erosion in the province mainly comes from sloping farmland. In view of the low level of rural productive forces in Guizhou Province and the fact that many peasants have not yet solved the problem of adequate food and clothing, it is suggested to implement a composite agroforestry system that will rationally arrange agriculture, forestry, grass, fruit and medicine cultivation on slope farmland. In this way, it will not only result in a long period of time but also increase the incomes of peasants, which will be conducive to mobilizing the peasants’ enthusiasm for returning farm land.