黄土半干旱区林草复合优化配置与结构调控研究进展  

Review on Structure and Optimal Allocation of Forest-grass Strip-intercropping System in Semi-arid Area of Loess Plateau

作　　者：高路博[1] 毕华兴[1] 云雷[1] 刘李霞[1] 朱悦[1] 

机构地区：[1]北京林业大学水土保持学院,水土保持与荒漠化防治教育部重点实验室,山西吉县森林生态系统国家野外科学观测研究站,北京100083

出　　处：《水土保持研究》2011年第3期260-266,共7页Research of Soil and Water Conservation

基　　金：国家“十二五”科技支撑项目“高效可持续农林复合系统构建及调控技术研究”(2011BAD38B02);国家自然科学基金项目“晋西黄土区森林植被对径流的影响及其尺度辨析”(30972419)

摘　　要：林草复合系统是我国干旱与半干旱地区陡坡农林复合的主要模式之一。该文在综述黄土高原林草复合模式生态效益、社会效益、经济效益的基础上,对黄土半干旱区林草复合优化配置与结构调控研究进展进行了研究,提出了适宜黄土半干旱区林草复合的造林树种为刺槐和油松,草种为以苜蓿为代表的豆科类优质牧草。并对目前晋西黄土区林分密度研究进行了分析,根据水量平衡原则确定了适宜于在黄土高原推广应用的林分合理密度计算公式。在对黄土高原林草复合研究现状进行分析的基础上,提出了黄土高原林草复合研究中存在的问题,以及未来的发展方向,旨在为黄土高原退耕还林及水土保持人工林建设提供借鉴。Forest-grass strip-intercropping system is one of the main models of agroforestry on steep slopes in arid and semi-arid area of Loess Plateau in China.Based on assessment of ecological,social and economic benefits of forest-grass strip-intercropping system,this paper presented the review on structure and optimal allocation of forest-grass strip-intercropping system in semi-arid area of Loess Plateau.The authors put forward that,the suitable species are Robinia pseudoacacia,Pinus tabulae formis,and leguminous grass（Medicago sativa,Astragalus adsurgens,Melilotus officinalis etc.） in forest-grass strip-intercropping system in semi-arid area of Loess Plateau.And a formula to calculate appropriate density for forest in the Loess Area has been developed through analysis on the balance of water supply and water consumption.Based on the analysis of recent studies on forest-grass strip-intercropping system,some current problems and future suggestions have been given to the research on forest-grass strip-intercropping system in Loess area.The authors hope this review can provide some useful references to process the forest ecological project in Loess area.

关 键 词：林草复合系统 林分密度 黄土高原 

分 类 号：S727.25[农业科学—林木遗传育种]