Abstract: In September 2008 and February 2009, an investigation was made on the habitat ecological factors of Syrmaticus ellioti and Lophura nycthemera in Guanshan National Nature Reserve in Jiangxi Province, with the niche breadth, niche overlap, and interspecific competition of the two species analyzed by eight habitat resource axes. The integrative niche breadth of S. ellioti and L. nycthemera was only 0.294 and 0.268, respectively, indicating a narrow niche. S. ellioti  had narrower altitude-and slope niche breadths but wider aspect niche breadth than L. nycthemera, while the other resource axes niche breadths of the two species were similar. The niche similarity of the two species was 0.425, and the competition coefficient was 0.584, indicating an intense competition between the two species. It was suggested that the protection of vegetation and water resources at low altitude should be strengthened, and human disturbances should be reduced.

Key words: Coffea arabica, Fertilization, Watering, Growth, Photosynthetic characteristics