根据森林资源调查历史数据 ,采用Simpson多样性指数和Shannon多样性指数计算三江并流区怒江州森林景观生态系统的生物多样性指数 ,分析其变化趋势和原因 ,这种变化与森林经营的关系 ,并提出了该地区森林经营的建议和对策 According to the historical data of forest resources survey, using Simpson diversity index and Shannon diversity index to calculate the biodiversity index of forest landscape ecosystem in Nujiang Prefecture in the Three Parallel Rivers District, and analyzing the changing trend and the reason, the relationship between this change and forest management, And put forward suggestions and countermeasures of forest management in this area