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印度热带干旱地区沙漠柚木(Tecomella undulata)同龄林极限林分密度与基面积模型
引用本文:Vindhya Prasad Tewari. 印度热带干旱地区沙漠柚木(Tecomella undulata)同龄林极限林分密度与基面积模型[J]. 林业研究, 2010, 21(1): 13-18. DOI: 10.1007/s11676-010-0002-6
作者姓名:Vindhya Prasad Tewari
作者单位:Forest;Management;Unit;Silviculture;Division;P.O.;Krishi;Mandi;NewPali;Road;Arid;Research;Institute;Jodhpur;India;
基金项目:the State Forest Department,Rajasthan for providing financial support for conducting this study and to their officials for rendering necessary assistance during fieldwork
摘    要:对用于评价印度拉贾斯坦邦热带干旱区沙漠柚木极限林分密度的公式进行了研究。对5个不同密度的林分基面积预测模型进行测试和比较,这些模型属非线性生长函数的轨迹不变量代数差形式。这些模型可根据林分变量,如优势高/公顷、立木数/公顷,预测林分基面积,还可用于评估不同造林方案。利用所收集的22块样地的数据建立模型。使用各种可能的树龄数据结构,用定性和定量标准比较了这些替代模型。使用Akaike信息准则差异统计来分析各种模型的预测能力。结果表明:Hui和Gadow提出的模型预测效果最好,推荐在本研究区域内使用该模型来预测沙漠柚木林分基面积。但是,此模型并未使用间伐林分数据,因此,不能准确地预测林木有明显自然死亡的林分基面积。

关 键 词:模型评价  轨迹不变量代数差生长函数  潜在密度  定性和定量标准  拉贾斯坦邦

Limiting stand density and basal area projection models for even-aged Tecomella undulata plantations in a hot arid region of India
Vindhya Prasad Tewari. Limiting stand density and basal area projection models for even-aged Tecomella undulata plantations in a hot arid region of India[J]. Journal of Forestry Research, 2010, 21(1): 13-18. DOI: 10.1007/s11676-010-0002-6
Authors:Vindhya Prasad Tewari
Affiliation:Forest Management Unit, Silviculture Division, P.O. Krishi Mahdi, New Pali Road, Arid Forest Research Institute, Jodhpur 342005, India.
Abstract:This paper presents equations for estimating limiting stand density for T. undulata plantations grown in hot desert areas of Rajasthan State in India. Five different stand level basal area projection models, belonging to the path invariant algebraic difference form of a non-linear growth function, were also tested and compared. These models can be used to predict future basal area as a function of stand variables like dominant height and stem number per hectare and are necessary for reviewing different silv...
Keywords:model evaluation  path invariant algebraic difference form growth function  potential density  qualitative and quantitative criteria  Rajasthan  
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