Niche characteristics of dominant populations in Elaeagnus mollis communities,Shanxi Realized Niches of Several Eremophytes in Desert Communities of Minqin Desert Area Niches of Major Plant Species in Malan Forest Standing in the Loess Plateau Dominant Species Niche of Quercus liaotungensis Communities in Huanglong Mt.of Shaanxi Study on the Niche and Competition of Populations in Man-natural Mixed Forest of Cunninghamia lanceolata and Broadleaf Trees DOMINANT TREES’ NICHE CHARACTERISTICS AND FOOD PLANTS IN RHINOPITHECUS ROXELLANA HABITAT IN SHENNONGJIA, CHINA Analysis on the Niche of the Main Plant Species of Oasis-deseart Ecotone in Fukang of Xinjiang The Characteristics of Multi-dimension Niche of Dominant Populations in Chinese fir and Broad-leaved Mixed Forest