1. Faculty of Modern Agricultural Engineering, Kunming University of Science & Technology, Kunming, Yunnan, People’s Republic of China
2. Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control, Faculty of Environmental Science & Engineering, Kunming University of Science & Technology, Kunming, Yunnan, People’s Republic of China
3. City College, Kunming University of Science & Technology, Kunming, Yunnan, People’s Republic of China