目前，我国正面临着严峻的土地荒漠化的挑战。改善西部生态环境，是西部地区开发建设必须首先研究和解决的问题。西部生态危机带来的后果　　20世纪下半叶我国沙尘暴天气呈急速上升趋势：50年代发生5次，60年代8次，70年代13次，80年代14次，90年代23次，2000年宁夏就发生11次 At present, our country is facing the severe challenge of land desertification. Improving the ecological environment in the west is the first issue that must be studied and solved in the development and construction of the western region. Consequences of the western ecological crisis In the second half of the 20th century, China’s sandstorm weather showed a rapid upward trend: five occurred in the 1950s, eight in the 1960s, thirteen in the 1970s, 14th in the 1980s, 23rd in the 1990s and 2000 in Ningxia Occurred 11 times