基于清查数据的立地质量评价方法准确性分析
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摘要
立地质量的准确评价是森林科学经营的前提,本研究采用四川省第九次森林资源清查数据,筛选符合建模要求的样本,建立树高和蓄积量生长模型,运用单因素方差分析方法对不同因子间基准年龄时林分蓄积量进行分析,并比较不同立地质量评价方法的准确性。结果表明:建立的林分树高和蓄积生长曲线簇能反映不同条件下林分生长差异;海拔、坡度、土壤类型、砾石含量和植被类型会极显著影响立地质量;立地质量评价方法准确性地位级指数优于多元地位指数和森林类型指数,多元地位指数与森林类型指数评价准确性无显著性差异。
Accurate site quality evaluation is the premise of forest scientific management. This study used the9 th forest resource inventory data of Sichuan Province to screen samples that met the modeling requirements and establish a tree height and volume growth model. One-way ANOVA was used to analyze the stand volume of the reference ages between different factors, and the accuracy of different site quality assessment methods was compared. Results show that the established stand height and accumulation growth curve cluster can reflect the difference of stand growth under different conditions. Altitude, slope, soil type, gravel content and vegetation type can significantly affect site quality The accuracy status index of the site quality evaluation method is superior to the multi-position status index and the forest type index. There is no significant difference between the multi-position status index and the forest type index evaluation accuracy.
Accurate site quality evaluation is the premise of forest scientific management. This study used the9 th forest resource inventory data of Sichuan Province to screen samples that met the modeling requirements and establish a tree height and volume growth model. One-way ANOVA was used to analyze the stand volume of the reference ages between different factors, and the accuracy of different site quality assessment methods was compared. Results show that the established stand height and accumulation growth curve cluster can reflect the difference of stand growth under different conditions. Altitude, slope, soil type, gravel content and vegetation type can significantly affect site quality The accuracy status index of the site quality evaluation method is superior to the multi-position status index and the forest type index. There is no significant difference between the multi-position status index and the forest type index evaluation accuracy.
引文
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[2]孟宪宇.测树学[M].北京:中国林业出版社,1996.
[3]Corona P,Scotti R,Tarchiani N.Relationship between environmental factors and site index in Douglas-fir plantations in central Italy[J].Forest Ecology and Management,1998,110(1/2/3):195-207.
[4]吴恒,党坤良,田相林,等.秦岭林区天然次生林与人工林立地质量评价[J].林业科学,2015,51(4):78-88.
[5]El-Shaarawi A,Piegorsch W.Encyclopedia of Environmetrics[M].NewYork:Wiley,2002:811-812.
[6]洪玲霞,雷相东,李永慈.蒙古栎林全林整体生长模型及其应用[J].林业科学研究,2012,25(2):201-206.
[7]吴恒,朱丽艳,李华,等.昆明市4个主要针叶树种林分断面积生长模型研究[J].西南林业大学学报(自然科学),2018,38(4):119-125.
[8]李海奎,法蕾.基于分级的全国主要树种树高-胸径曲线模型[J].林业科学,2011,47(10):83-90.
[9]刘建军,雷瑞德,尚廉斌,等.火地塘林场立地分类的初步研究[J].西北林学院学报,1996,11(S1):31-36.
[10]Stage A R,Salas C.Interactions of elevation,aspect,and slope in models of forest species composition and productivity[J].Forest Science,2007,53(4):486-492.