黄土高原沟壑区退耕还林优化模式研究  

The Optimized Model for Conversion of Farmland to Forests in the Hill_Gully Subregion of Loess Plateau

作　　者：李世东[1] 

机构地区：[1]国家林业局,北京100714

出　　处：《林业科学》2004年第5期71-78,共8页Scientia Silvae Sinicae

基　　金：国家林业局重点科研项目 (2 0 0 0 -2 8)。

摘　　要：退耕还林工程是我国六大林业重点工程之一 ,由于其作为一项大型工程来建设在我国才刚刚起步 ,技术操作又十分复杂 ,所以急需系统的科技体系指导 ,特别是其优化模式及配套技术等关键科技问题 ,都亟待研究解决。本文以退耕还林工程典型立地黄土高原沟壑区为研究对象 ,引入系统动力学等多种先进理论和技术 ,采取试验站点观测与广泛调研集成等 5个结合的技术路线 ,横跨自然科学、经济科学、社会科学 3大领域 ,共获取原始数据10 0 0 0多个 ,对退耕还林的优化模式进行了系统研究 ,提出了黄土高原沟壑区山西省乡宁县试验点退耕还林生态经济社会效益最优结合、可持续发展的油松×侧柏×花椒×刺槐模式 ,并提出了配套技术及模式机理。The Conversion of Farmland to Forests Programme (CFF) is one of the six great ecological forest programmes in China. Since CFF as an extensive ecological project is just starting to implement and its technological operation is extremely complicated, it is in critical need for the support from science and technology, especially the key technologies in the form of optimized models and their associated techniques. The study covers the model area of CFF in hill_gully subregion of Loess Plateau, and for the first time introduces system dynamics and other latest theories and methodologies. By means of five combied technical lines including the site observation of field stations and extensive investigations etc., and over 10 000 original data obtained in the fields of natural science, social science and economics, the optimized models of CFF were studied systemetially. Optimized operational models integrating maximized ecological, economic and social benefits and reflecting sustainability concepts were proposed for typical sites of CFF: the Pinus tabulaeformis × Platycladus orientalis × Zanthoxylum Spp. × Robinia pseudoacacia model at the eroded flat ridges of the middle reaches of the Yellow River. The model contains specific supporting technologies and operational mechanism.

关 键 词：黄土高原沟壑区 退耕还林 优化模式 油松 侧柏 花椒 刺槐 综合效益 

分 类 号：S727.2[农业科学—林木遗传育种]