The quality of flue-cured tobacco planted in five main ecological tobacco areas in Guizhou was analyzed and compared to provide the basis for setting up different evaluation systems of tobacco quality characteristic under different ecological conditions.

For ecological type flue-cured tobacco production in Yongding district, Zhangjiajie city, a study was carried out to identify the types and distribution of popular diseases in Yongding district, and to control major diseases.

Construction of ecological district index system;

Concept and practice of ecological community;

A Study on Evaluation of Ecological Community Based on Principal Component Analysis Method——A case study within outer ring road of Shanghai City;