Spatial Distribution Characteristics of Honghe Hani Terrace

Based on digital elevation model of ASTERGDEM V2, representative Hani terraced fields in Yuanyang county, Lvchun County, Honghe County and Jinping County of Yunnan Province were selected as a case study area. Combing with field investigation and using spatial analysis method based on GIS platform. The relationships between the spatial distribution of Honghe Hani Terrace and topographic index of elevation，slope and aspect was analyzed. The research results showed that the total area of terrace of the study area was 68927hm2. The number of terrace patches which area was larger than 10hm2 were few, but accounted for fiftynine percent of the total area of the terraces. So the results showed that the distribution of the terrace was a continuous large area. The terraces are mainly distributed from 800m to 1800m, the slope of 6°-35°, with the southeastern slope and southwestern slope. The large continuous terrace was concentrically distributed at the elevation of 1200-1400m, the slope of 15°-25°, with the southern slope. The distribution characteristics of Hani terraces in space were related to the spatial distribution pattern of settlements, the geomorphological features and the environmental factors of Ailao Mountain.