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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Effect of disturbance on the regeneration of four dominant and economically important woody species in a broad-leaved subtropical humid forest of Meghalaya, northeast India
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Effect of disturbance on the regeneration of four dominant and economically important woody species in a broad-leaved subtropical humid forest of Meghalaya, northeast India

机译：干扰对印度东北梅加拉亚邦阔叶亚热带湿润森林中四种主要和具有经济意义的木本物种更新的影响

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摘要

Effect of disturbance was studied on the regeneration behaviour of four dominant woody species, viz., Casearia vareca Roxb., Eurya japonica Thunb., Psychotria symplocifolia Kurz. and Rhododendron arboreum Sm., of a sacred forest which represents a subtropical wet hill forest of Meghalaya in northeast India. About one third area of this forest is undisturbed or mildly disturbed (stand I), while two thirds of this area is moderately-to-highly disturbed (stand II). Tree density, light interception and canopy cover were markedly higher in stand I when compared to stand II. E. japonica and R. arboreum are heliophilic as depicted by their greater numbers of seedlings and saplings in stand II. On the contrary, C. vareca and P. symplocifolia showed higher density of seedlings and saplings in stand I which indicates that these two species are sciophilic in nature. In all the species the per cent of saplings that grew into trees was higher than the percentage of seedlings that developed into saplings. Sprouting behaviour of four species differed greatly in two stands. The average number of sprouts per stump was higher in stand II, which could be linked to greater availability of light in this stand. E. japonica showed greater coppicing potential than the other three species. The coppicing in this species was better in stand II as compared to stand I. Analysis of variance showed a significant (P < 0.05) decrease in number of sprouts of E. japonica and R. arboreum from stand II to stand I.
机译：研究了干扰对四种主要木本物种，即干酪木，欧洲粳稻，拟南芥和毛竹的再生行为的影响。属神圣森林的杜鹃花植物园（Rhododendron arboreum Sm。），代表印度东北部梅加拉亚邦的亚热带湿山林。这个森林的大约三分之一地区没有受到干扰或受到轻微干扰（I号展位），而该地区的三分之二受到中度至高度干扰（II号展位）。与林分II相比，林分I的树木密度，光线拦截和树冠覆盖明显更高。日本大肠埃希氏菌和树木阿魏氏菌属嗜油菌，如在第II站中的幼苗和树苗数量较多所描述。相反，C。vareca和P. symplocifolia在I展位显示出较高的幼苗和幼树密度，这表明这两个物种在性质上都具有亲核性。在所有物种中，成长为树木的幼树的百分比高于成长为幼树的幼苗的百分比。在两个林分中，四个物种的发芽行为差异很大。展位II中每个树桩的平均发芽数更高，这可能与该展位中光的可用性更高有关。粳稻显示出比其他三个物种更大的繁殖潜力。在立场II中，与在立场I中相比，该物种的适应性更好。方差分析显示，从立场II到立场I，日本粳稻和植物红豆芽的数量显着减少（P <0.05）。

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