| 沙坡头地区人工植被油蒿种群结构与更新的研究 |
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| 引用本文： | 马凤云,李新荣,龙利群,张景光.沙坡头地区人工植被油蒿种群结构与更新的研究[J].中国沙漠,2002,22(6):571-575. |
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| 作者姓名： | 马凤云 李新荣 龙利群 张景光 |
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| 作者单位： | 中国科学院,寒区旱区环境与工程研究所沙坡头沙漠试验研究站,甘肃,兰州,730000 |
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| 基金项目： | 中国科学院寒区旱区环境与工程研究所知识创新工程项目(CACX2 10 0 31，2 10 0 94 )资助 |
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| 摘 要： | 采用野外调查和比较分析的方法,对沙坡头地区人工植被油蒿种群的结构和更新进行了研究.通过对不同固沙起始年代油蒿种群大小结构的分析发现,幼树个体的数量较多,中等大小的成年个体数量少,老龄个体的数量极少.年限较短的人工植被区油蒿幼树个体的数量多于年限较长的人工植被区,而油蒿幼苗的数量则呈相反的趋势.油蒿幼苗在不同的地形中分布数量也不同,丘间地有较多的幼苗,背风坡幼苗特别少.油蒿成年个体在人工植被区中呈均匀分布,油蒿幼苗则呈聚集分布.
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| 关 键 词： | 油蒿种群结构 油蒿更新 沙坡头地区 |
| 文章编号： | 1000-694X(2002)06-0571-05 |
| 修稿时间： | 2002年7月29日 |
Population Structure and Regeneration of Planted Artemisia ordocisa in Shapotou |
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| MA Feng\|yun,LI Xin\|rong,LONG Li\|qun,ZHANG Jing\|guang.Population Structure and Regeneration of Planted Artemisia ordocisa in Shapotou[J].Journal of Desert Research,2002,22(6):571-575. |
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| Authors: | MA Feng\|yun LI Xin\|rong LONG Li\|qun ZHANG Jing\|guang |
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| Abstract: | By employing field survey and comparison analysis, the population structure and natural regeneration of \%Artemisia ordosica\% in Shpotou artificial vegetation areas were studied. Analysis of size structure and spatial distribution patterns showed the number of saplings exceeds that of individuals in middle size class, and the number of aged individuals was at least in every plots. There were more saplings in short\|time artificial vegetation areas than in long\|time artificial vegetation areas, and on the contrary, the number of seedlings showed the reverse trend. The number of seedling differed at different terrains, more seedlings in the inter\|dune and less in the leeward. The adults showed uniform distribution, while the seedlings showed clumped distribution. |
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| Keywords: | Shapotou area population structure of \%Artemisia ordosica\% regeneration |
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