陕甘宁老区生态贫水化与生态建设

Ecological Water-reducing Change and Ecological Construction in Shaanxi-Gansu-Ningxia Liberated Region in China

应用陕甘宁老区气象水文实测记录,通过实地考察和应用统计分析等方法,对陕甘宁老区贫水化过程进行了探讨。研究认为,20世纪90年代是陕甘宁老区贫水化过程最剧烈的时期,生态破坏和生态建设又是导致贫水化的主要因素。生态贫水化是生态需水与生态用水之趋势差。生态贫水化是西部大开发面临的主要环境问题,自然恢复是实现"山川秀美"的主要途径。

Based on the data up to 2000 from the hydroclimatological departmentsand practice investigation, this paper discusses what is the ecological waterreducing and how to construct ecological environment. It is definitude that the serious situation of ecological waterreducing change is last a decade of 20 century in ShaanxiGansuNingxia old liberated area and the mostly reason may be ecological destroy and ecological improvement. There may be the 'Wp= Wx-Wy' relation pattern in a regional ecological waterreducing change. The ecological waterreducing is the key environmental matter through western region development in China and its approach way must be natural regeneration in environmental protection and ecological improvement for the beautiful natural landscape.