【摘要】 黄土高原地区是我国重要的生态环境脆弱区和农业区。黄土高原生态建设的目的是建立可持续发展的生态农业系统。在对环县生态建设与农业发展实地调查的基础上 ,通过对黄土高原地区不同治理模式的对比分析 ,以及生态建设中存在的主要问题和生态农业发展的研究。表明环县生态建设中存在的主要问题为人口压力过重、水土流失加剧、植被缺乏、耕地质量差、自然灾害多等。提出生态建设与农业发展的模式 ,即“林草封顶、桃杏缠腰、阳坡刺槐、阴坡油松、坡地梯田、乔灌混交、杨柳垫底、沟道筑坝”。更多还原

【Abstract】 The Loess Plateau is one of the regions where the ecological environment is vulnerable but it is also one of the important agricultural regions in China. The purpose of the ecological regeneration in the Loess Plateau is to achieve the sustainable development of the regional eco-agriculture. In this paper, the main existing problems in the ecological regeneration and the eco-agricultural development are researched based on the investigation of the ecological regeneration and the agricultural development in Huanxian County, Gansu Province as well as the comparison and analysis of the different applied modes in the Loess Plateau. The results show that the existing problems in the ecological regeneration in Huanxian County are the rapid population growth, serious soil erosion, low vegetation coverage, poor soil fertility, frequent occurrence of natural disasters, etc. The modes for the ecological regeneration and the agricultural development are put forward, which are to “afforest and plant grasses in the top zones of the mountains, plant the trees of Amygdalus davidiana and Avulgaris Lam in the mid-mountain zones, plant locust trees on the south-facing slopes, plant Pinaceae trees on the north-facing slopes, afforest the mixed forests of arbors and shrubs on the terraced fields, plant the tress of Populus spp and Salix metaglauca in the valleys". The modes have the reference significance in the synthetic ecological regeneration in the Loess Plateau.更多还原