河西地区的生态建设与可持续农业发展战略及对策

本文分析了河西地区主要生态环境问题的现状和成因，认为人类不合理的经济活动和人口压力破坏了干旱区复合生态系统的良性循环维持机理，导致区域的水、土、生态环境之间的平衡被打破，使区域生态环境劣变。对此，文章提出了河西地区生态建设与可持续农业发展的对策建议。

ON THE STRATEGY OF ECOLOGICAL CONSTRUCTION AND SUSTAINABLE AGRICULTURAL DEVELOPMENT OF HEXI AREA

With an area of 27.7 km 2 which account for 60% of the total area of Gansu province, Hexi region belongs to Northwest China Arid Region and inland river basin. Under the stress of increasing population, the improper socioeconomic activities and the global and regional environmental change, the eco environment of the complex ecosystem of Hexi arid region has been continually deteriorating and a number of serious eco environmental problems have occurred in recent years. Land desertification, sand storm, water shortage, lower vegetation coverage, oasis degeneration, grassland deterioration and secondary soil salinization are the major problems in the ecology and environment of Hexi region. It is very urgent to protect and reconstruct the ecosystem of this region. Based on the analysis of the status and causes of the deterioration of eco-environment in Hexi region, the authors put forward some measurements and advice in the present paper for the protection and reconstruction of the ecosystem and sustainable agriculture development of Hexi region.