巴丹吉林沙漠东缘天然梭梭种群结构与动态特征
收稿日期: 2022-09-27
修回日期: 2022-11-29
网络出版日期: 2023-06-21
基金资助
库布齐沙漠沿黄段流动沙丘综合治理技术研究与示范项目(2021GG0073)
Population dynamics of natural Haloxylon ammodendron in the eastern margin of Badain Jaran Desert
Received date: 2022-09-27
Revised date: 2022-11-29
Online published: 2023-06-21
为探究巴丹吉林沙漠天然梭梭林的种群结构以及动态特征,揭示梭梭建群种的更新过程和未来发展趋势,编制其静态生命表、生存曲线、数量动态变化指数及时间序列预测模型。结果表明:(1) 梭梭种群年龄结构属于“J”型,且梭梭幼苗数量较多;(2) 梭梭种群存活曲线属于Deevey-Ⅱ型,龄级越大数量越少,消失率和死亡率变化趋势一致,均在第ⅩⅦ和Ⅳ龄级出现极大值和极小值;(3) 梭梭种群结构与动态变化指数大于零(
毛毛 , 蒙仲举 , 党晓宏 , 赵飞燕 , 王德慧 , 柴享贤 . 巴丹吉林沙漠东缘天然梭梭种群结构与动态特征[J]. 干旱区研究, 2023 , 40(6) : 971 -978 . DOI: 10.13866/j.azr.2023.06.12
The purpose of this study was to analyze the population structure and dynamic characteristics of the natural Haloxylon ammodendron forest in Badain Jaran Desert, revealing the renewal process and future development trend of this Haloxylon species. This work also involved preparation of a static life table, survival rate curves, mortality and disappearing rate curves, population dynamic change index, and a time-series forecasting model. The results showed that: (1) The age structure of this species belongs to the “J” type, with abundant seedlings. (2) The survival curve belongs to the Deevey-II type, and the disappearance and mortality rates have similar trends, both with maximum and minimum values at ages X VII, and IV. (3) The number dynamic change index is greater than 0, indicating that this species has a growing population. (4) The results of time-series prediction 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 this population, it is recommended to manually intervene in the growth of H. ammodendron seedlings to improve their survival rate.
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