１９９８年，国务院批准将长江上游列为国家水土保持重点防治区，从此揭开了开发治理长江的新篇章。重点防治县由当初的６１个扩大到现在的１９３个，由上游逐渐辐射到中下游地区。九年来，“长治”工程累计治理水土流失面积５６万ｋｍ２，累计增产粮食３２亿ｋｇ，营造... In 1998, the State Council approved the upper reaches of the Yangtze River as a national key area for soil and water conservation and opened a new chapter in the development and management of the Yangtze River. The key prevention and control counties expanded from the original 61 to the present 193, radiating from the upper reaches to the middle and lower reaches. In the past nine years, the project of “Changzhi” has totally treated 56,000 km2 of soil and water loss, and cumulatively increased grain output by 3.2 billion kg to create ...