Abstract: The eco-environmental factors of wild tea germplasms distributed in 32 geographical locations were studied to evaluate the diversity of distribution characteristics, climatic characteristics and associated plants, and to provide theoretical basis for the protection of wild tea germplasm in Guizhou Province. The results showed that 50% of the wild tea germplasms were arbor type, 0.03% were small arbor type, 49.97% were shrub type. The horizontal distribution range of wild tea germplasms was 104°58'-108°36'E and 24°58'-29°07'N. The vertical distribution range of wild tea germplasms was 615-1 900 m. Most geographical locations located in the humid subtropical monsoon and subtropical monsoon climate areas. Associated plants of woody species were fewer. The numbers of wild tea plants in each geographical location was significantly positive correlated with the contents of total nitrogen, total phosphorus and organic matter in soil, numbers and species of main associated plants. Some wild tea germplasm could survive in extreme climate for a long time, which had unique adaptability to extreme climate. The natural distribution of wild tea germplasm had changed, therefore, it was imperative to strengthen the effective protection and efficient utilization of wild tea trees in Guizhou.

Key words: wild tea, climatic characteristics, ecological environment, diversity, associated plant