巴丹吉林沙漠东缘天然梭梭种群结构与动态特征 postprint

Abstract: The purpose of this study was to analyze the population structure and dynamic characteristics of thenatural Haloxylon ammodendron forest in Badain Jaran Desert, revealing the renewal process and futuredevelopment trend of this Haloxylon species. This work also involved preparation of a static life table, survival ratecurves, mortality and disappearing rate curves, population dynamic change index, and a time- series forecastingmodel. The results showed that: (1) The age structure of this species belongs to the“J”type, with abundantseedlings. (2) The survival curve belongs to the Deevey-II type, and the disappearance and mortality rates havesimilar trends, both with maximum and minimum values at ages X VII, and IV. (3) The number dynamic changeindex is greater than 0, indicating that this species has a growing population. (4) The results of time- seriesprediction analysis showed that the number of individuals will increase. Studies have shown that the natural H.ammodendron population is a stable growing population. In view of the low survival rate of young in thispopulation, it is recommended to manually intervene in the growth of H. ammodendron seedlings to improvetheir survival rate.