Changes of soil fertility quality properties under subalpine spruce plantation in Western Sichuan
川西亚高山云杉人工林土壤质量性状演变

Western Sichuan is an important subalpine coniferous forest of Sichuan, China. As it is mainly distributed in Jinshajiang River, the upper reaches of the Yangtze River and its tributary, the Yalongjiang and Minjiang Rivers, it plays a very important role in water conservation and soil protection in this area. Moreover, it also has a crucial influence on local economy and ecological balance, and can further affect the drainage areas of the middle and lower reaches of the Yangtze River. Since 1940's, natural ...