【摘要】 甘肃河西地区地处欧亚大陆腹地,气候极端干燥,年平均降水量约40—200mm。水源缺乏,农、林、牧生态系统十分脆弱。雪线与冰川后退,总经流减少11.77%,泉水减少17.8%。祁连山森林遭受破坏,森林面积减少16.5%,因此,恢复与稳定河西生态系统是发展河西工农业生产,改善人民生活环境的首要战略任务。主要措施是:防止雪线和冰川后退,保护和扩大祁连山水源涵养林,大力营造绿洲农田防护林,保护和封育荒漠天然植被,改善现有水利设施,加强水利工程建设,减少水份的散失量、提高水资源的合理利用率。更多还原

【Abstract】 The Gansu Corridr is located in inland Eurasian continent with extremearid climate. The ecosystems of agriculture, forestry and animal husbandryare very fragile and unstable. The glacier and snow line of the Qilian Mo-untains have drawn back so much as to reduce the total runoff to 88.23%,the spring water to 82.20%. The forest of the Qilian Mountains has serio-usly been damaged, that reduces the forest area by 16.5%. Therefore. it isan important strategy to recover the ecosystem and improve the agricultureand forestry of the Gansu Corridor. The efforts must be made to guard ag-ainst the retreat of the snow line and glacier, to protect and enlarge thewater-conserving forest, to plant shelterbelt in oasis area,to protect and cl-ose the natural vegetation, to ameliorate the water conservancy facilities andirrigation works, to raise the utilization ratio of water resources.更多还原