Population geographical distribution and population spatial pattern of Drepanostachyun luodianense

Geographical distribution, population spatial pattern and formation mechanism of Drepanostachyun luodianense were studied using the Greig-Smith adjacent grid sampling method. The results showed that geographical distribution of D. luodianense was contagious distribution; population distribution pattern presented the rule of random distribution, uniform distribution and contagious distribution with the increase of quadrat. Geographical distribution, population spatial pattern of D. luodianense were impacted by clonal expansion and soil properties, elevation and average annual rainfall were the main restricting factors for geographical distribution of D. luodianense, while gradient and slope direction were the main restricting factors for population spatial pattern.