1. CAS Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, China
2. Center of Plant Ecology, Core Botanical Gardens, Chinese Academy of Sciences, Mengla, China
3. Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
4. Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China