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应用生态学报 ›› 2009, Vol. 20 ›› Issue (09): 2105-2110.

• 研究报告 • 上一篇    下一篇

鄂尔多斯高原油蒿种群分布格局对降水梯度的反应

李秋爽1,2;张超1;王飞1;来利明1;张莉1;李文婷1;白桦1;郑元润1   

  1. 1中国科学院植物研究所植被与环境变化国家重点实验室| 北京 100093;2中国科学院研究生院| 北京 100049
  • 收稿日期:2009-02-11 出版日期:2009-09-20 发布日期:2009-09-20

Responses of spatial distribution pattern of Artemisia ordosica population to the precipitation gradient on Ordos Plateau.

LI Qiu-shuang1,2;ZHANG Chao1;WANG Fei1;LAI Li-ming1;ZHANG Li1;LI Wen-ting1;BAI Hua1;ZHENG Yuan-run1   

  1. 1State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China|2Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2009-02-11 Online:2009-09-20 Published:2009-09-20

摘要: 应用方差均值比率法、聚块性指数及点格局方法,沿着鄂尔多斯高原从东至西的降水梯度(336~249 mm·a-1),设置5个采样点,对油蒿种群分布格局及其对降水梯度的反应进行了研究.结果表明:随着降水梯度的递减,在小尺度上研究区油蒿种群分布格局表现为由均匀分布向随机分布转变;在大尺度上则表现为由随机分布向聚集分布转变.降雨的减少显著改变了油蒿种群的空间分布格局,在进行生态恢复时需对植物个体进行合理配置.

关键词: 鄂尔多斯高原, 油蒿, 分布格局, 降水梯度, 点格局, 方差比率法, 纳米硒, 氟, 鲤鱼, 肝, 抗氧化功能, 组织病理

Abstract: Five sites along the precipitation gradient (336〖KG-*2〗-〖KG-*7〗24
9 mm·a-1) from east to west in Ordos Plateau were selected to study the spat
ial distribution pattern of Artemisia ordosica population and its responses
to the precipitation gradient by the methods of variance mean ratio, aggregative
 index, and point pattern analysis. The reduction of precipitation affected the
spatial distribution pattern of A. ordosica population significantly. With d
ecreasing precipitation gradient, the spatial pattern of A. ordosica populat
ion changed from uniform to random in small scale, and from random to clumpy in
large scale, suggesting that in the ecological restoration of Ordos Plateau, a r
ational arrangement of A. ordosica should be made.

Key words: Ordos Plateau, Artemisia ordosica, distribution pattern, precipitation gradient, point pattern, variance mean ratio method, nano-selenium, fluoride, carp, liver, antioxidant capacity, histopathology.