introduction
wild tea is Assam tea [camillia sinensis ver. assamica]. it had origin from india and naturally distributes in the highland forest. In thailand, the wild tea cultivation fields, known as "miang gardens", have been maintained in the forests and recognized as a system of agroforestry. many studies reported that many biodiversity features were found in miang gardens especially plants that are useful for health. moreover, miang gardens are buffer zone to protect forest from invasion and disruption for agriculture. this study aims to find factors that affect the distribution of wild tea in the upper north of thailand and build optimal mathematic model, known as "species distribution models [SDMs] by using generalized linear models [GLMs].