2024年7月21日 星期日
新疆伊犁和塔城天山樱桃种群数量特征比较
Comparison on quantitative characteristics of Cerasus tianschanica populations in Ili and Tacheng of Xinjiang
2022年 第31卷 第5期 页码[74-80]    下载全文[1.4MB]  
摘要

运用静态生命表、存活曲线和生存分析函数等方法,综合分析新疆伊犁和塔城天山樱桃(Cerasus tianschanica Pojark.)种群动态变化。结果表明:新疆伊犁和塔城天山樱桃种群均以幼龄个体为主,属于增长型种群,但中龄和老龄个体占比较小。从静态生命表看,2个地区天山樱桃种群的生命期望(ex)总体随着龄级的增加逐渐下降,均在Ⅰ〔0.0 m3<体积(V)≤0.1 m3〕龄级最大,分别为3.758 2和2.380 0。塔城天山樱桃种群的ex峰值低于伊犁天山樱桃种群。数量动态分析结果显示:2个地区的天山樱桃种群总体呈增长趋势,但增长缓慢,对外界干扰具有较高的敏感性,且塔城天山樱桃种群较伊犁天山樱桃种群对外界随机干扰的敏感性更高。存活曲线显示:2个地区天山樱桃种群均更趋向于Deevey-Ⅱ型。基于上述研究结果,建议对新疆伊犁和塔城天山樱桃种群进行适当的人工抚育,促进其种群更新。

Abstract

The dynamic variations of Cerasus tianschanica Pojark. populations in Ili and Tacheng of Xinjiang were comprehensively analyzed by using multiple methods including static life table, survival curve, and survival analysis function. The results show that the C. tianschanica populations in Ili and Tacheng of Xinjiang are mainly composed of young individuals, and are of growth type, but the proportions of middle-aged and elderly individuals are relatively small. In general, according to static life table, the values of life expectancy (ex) of C. tianschanica populations in two areas gradually decrease with the increase of age class, and are both the largest at Ⅰ 〔0.0 m3<volume (V)≤0.1 m3〕 age class, which are 3.758 2 and 2.380 0 respectively. The peak value of ex of C. tianschanica population in Tacheng is lower than that in Ili. The result of quantity dynamic analysis shows that the C. tianschanica populations in two areas show an increasing trend, but the growth is slow and highly sensitive to external interference, and the sensitivity of C. tianschanica population in Tacheng to random external interference is higher than that in Ili. The survival curve shows that the C. tianschanica populations in two areas both more tend to be Deevey-Ⅱ type. Based on above research results, it is suggested that appropriate artificial raise of C. tianschanica populations in Ili and Tacheng of Xinjiang should be carried out to promote their population regeneration.

关键词天山樱桃; 年龄结构; 静态生命表; 存活曲线; 生存分析
Key wordsCerasus tianschanica Pojark.; age structure; static life table; survival curve; survival analysis
作者冯琳骄1, 陆彪2, 卢倩倩1, 侯毅兴1, 周龙1
所在单位1. 新疆农业大学园艺学院, 新疆 乌鲁木齐 830052; 2. 新疆特克斯县林业和草原局, 新疆 伊犁 835500
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基金项目国家科技部重点研发计划项目(2016YFC0501501); 新疆维吾尔自治区林业和草原局研发专项(XJFG202003)