青海省玉树藏族自治州 ,是我国平均海拔最高的自治州 ,面积２６ ７万平方公里 ,玉树还是长江、黄河、澜沧江三条大江的发源地。由于海拔高、气候恶劣以及封闭等原因 ,这里经济十分落后 ,六个县中有四个县属于国定贫困县。偏偏１９９６年又遭了历史上罕见的特大雪灾 ,有人说玉树 The Yushu Tibetan Autonomous Prefecture of Qinghai Province is the highest average autonomous prefecture in China with an area of ​​2,670,000 square kilometers. Yushu is also the birthplace of three major rivers, the Yangtze River, the Yellow River and the Lancang River. Due to high altitude, poor climate and closed and other reasons, the economy here is very backward, four out of six counties belong to the national poverty counties. However, another rare exception in 1996 was a huge snowstorm, some people say that Yushu