Volume 28 Issue 5
Oct.  2011
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LI Tian-jiang, LI Yun-fei, TIAN Tao, HE Bin, XU De-bing, GAO Jia-rong, LI Gen-qian. Density dynamics with model adjustments for stump sprouts of Hippophae rhamnoides subsp. sinensis[J]. Journal of Zhejiang A&F University, 2011, 28(5): 713-719. doi: 10.11833/j.issn.2095-0756.2011.05.005
Citation: LI Tian-jiang, LI Yun-fei, TIAN Tao, HE Bin, XU De-bing, GAO Jia-rong, LI Gen-qian. Density dynamics with model adjustments for stump sprouts of Hippophae rhamnoides subsp. sinensis[J]. Journal of Zhejiang A&F University, 2011, 28(5): 713-719. doi: 10.11833/j.issn.2095-0756.2011.05.005

Density dynamics with model adjustments for stump sprouts of Hippophae rhamnoides subsp. sinensis

doi: 10.11833/j.issn.2095-0756.2011.05.005
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  • Corresponding author: LI Gen-qian
  • Publish Date: 2011-10-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Density dynamics with model adjustments for stump sprouts of Hippophae rhamnoides subsp. sinensis

doi: 10.11833/j.issn.2095-0756.2011.05.005
    Corresponding author: LI Gen-qian

Abstract: Stumping is one of the important methods for tending management and restoration of population stability. In order to understand the adjustment regulation of density change which could provide scientific basis for population restoration and management of stump sprout,the density dynamic of stump sprout population was studied. Based on measurement of all individuals in a population of Hippophae rhamnoides subsp. sinensis at different successional stages,model adjustments of density dynamics and stump sprouts in the Mu Us sandy lands of north central China were analyzed using a spatial series substituted for a time series and plots arranged by age. In a model with variables of individual number,ramet morphology,and biomass adjustments were made by changing sprout and surviral rates of regenerated plants,ramet number,and plant density. Results showed that (1) population density had three stages increasing,decreasing and steady in turn;(2) morphological changes of regenerated plant included an increased population base diameter a decreased ratio of complex axis and an increased ratio of single axis;(3) biomass distribution constantly changed with sprout and survival adjustments. As the population base diameter increased,the dead branch biomass ratio increased and leaf biomass ratio decreased. Meanwhile,the ratios of clonal organs and mean root all decreased. Since growth and survivability could improve with a further stump sprouting,individual number and ramet morphology could be improved by adjusting the sprout and survival rate of clonal plants and ramets to help realize a rational utilization of the resource and maintenance of the population.[Ch,3 fig. 1 tab. 22 ref.]

LI Tian-jiang, LI Yun-fei, TIAN Tao, HE Bin, XU De-bing, GAO Jia-rong, LI Gen-qian. Density dynamics with model adjustments for stump sprouts of Hippophae rhamnoides subsp. sinensis[J]. Journal of Zhejiang A&F University, 2011, 28(5): 713-719. doi: 10.11833/j.issn.2095-0756.2011.05.005
Citation: LI Tian-jiang, LI Yun-fei, TIAN Tao, HE Bin, XU De-bing, GAO Jia-rong, LI Gen-qian. Density dynamics with model adjustments for stump sprouts of Hippophae rhamnoides subsp. sinensis[J]. Journal of Zhejiang A&F University, 2011, 28(5): 713-719. doi: 10.11833/j.issn.2095-0756.2011.05.005

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