摘要
根据样地调查数据,编制了阿拉善荒漠区敖隆敖包及乌兰腺吉蒙古扁桃种群静态生命表,并由此求得蒙古扁桃种群大小级结构图、存活曲线及死亡率曲线,从而对两地蒙古扁桃种群空间分布格局进行了比较研究。结果表明,两地蒙古扁桃种群幼龄和老龄级个体较少,中龄级个体较多。总体上,敖隆敖包蒙古扁桃种群年龄结构呈稳定型,而乌兰腺吉种群趋向衰退型。两地存活曲线处于DeeveyⅡ和DeeveyⅡ2。两地种群空间分布格局均呈聚集型分布。分析表明,草畜平衡在蒙古扁桃种群稳定型中发挥着重要作用。
Based on the survey data of field, the static life tables of Aoloonobo and Wulaanchonji Prunus mongolica population in Alashan desert have been compiled. According to the tables, the age structure, survival curve and mortality curve have been analyzed. And depended on spatial distribution patterns, a compared study on the struc- ture of Prunus mongolica population in two places has been made. The results show that the number of young and old - aged individuals accounts for less proportion of total population, that of the middle - aged individuals occupies more proportion. The age structure of Aoloonobo Prunus mongolica population tended to stable type and Wulaan- chonji ＇ s tended to recession type. Both of the survivorship curves in two places belong to Deevey Ⅱ and Deevey Ⅱ 2. The distribution pattern tended to be clumped in both places. Based on the analysis, the forage and animal balance plays an important role in stable type of Prunus mongolica population.
出处
《内蒙古林业科技》
2014年第1期7-11,共5页
Journal of Inner Mongolia Forestry Science and Technology
基金
内蒙古自治区自然科学基金项目(2011MS0516)
内蒙古高等学校科学研究基金项目(NJ10042)资助
关键词
蒙古扁桃
种群结构
空间分布格局
Prunus mongolica Maxim.
population structure
spatial pattern
