东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2013年
12期
26-29
,共4页
杨丝涵%岳德鹏%冯仲科%郑君
楊絲涵%嶽德鵬%馮仲科%鄭君
양사함%악덕붕%풍중과%정군
多边形样地法%森林资源调查%林分调查因子%最优株数
多邊形樣地法%森林資源調查%林分調查因子%最優株數
다변형양지법%삼림자원조사%림분조사인자%최우주수
Polygon plot method%Forest resources inventory%Stand description factors%Optimal value of trees
为了实现森林资源的精准快速计测,以在北京市内平原区县及周边山区县选取的5块标准样地内布设的175块不同树木数量构成的多边形样地为研究对象,按照多边形样地法的原理进行观测,将测算出的样地蓄积量、平均树高和平均胸径与标准样地每木检尺的结果进行对比分析。结论表明:当多边形样地由9株树组成时,在人工林中,样地蓄积量估测精度可达到93.2%,平均树高和平均胸径的估测精度也可达90%以上,满足森林二类调查精度。研究说明9株树的多边形样地法是一种快速准确的森林资源调查方法。
為瞭實現森林資源的精準快速計測,以在北京市內平原區縣及週邊山區縣選取的5塊標準樣地內佈設的175塊不同樹木數量構成的多邊形樣地為研究對象,按照多邊形樣地法的原理進行觀測,將測算齣的樣地蓄積量、平均樹高和平均胸徑與標準樣地每木檢呎的結果進行對比分析。結論錶明:噹多邊形樣地由9株樹組成時,在人工林中,樣地蓄積量估測精度可達到93.2%,平均樹高和平均胸徑的估測精度也可達90%以上,滿足森林二類調查精度。研究說明9株樹的多邊形樣地法是一種快速準確的森林資源調查方法。
위료실현삼림자원적정준쾌속계측,이재북경시내평원구현급주변산구현선취적5괴표준양지내포설적175괴불동수목수량구성적다변형양지위연구대상,안조다변형양지법적원리진행관측,장측산출적양지축적량、평균수고화평균흉경여표준양지매목검척적결과진행대비분석。결론표명:당다변형양지유9주수조성시,재인공림중,양지축적량고측정도가체도93.2%,평균수고화평균흉경적고측정도야가체90%이상,만족삼림이류조사정도。연구설명9주수적다변형양지법시일충쾌속준학적삼림자원조사방법。
For measuring forest resources accurately and fast, we arranged 175 polygon plots consist of different number of trees in five standard plots selected in the plain district and the surrounding mountainous area of Beijing city as the research ob-jects.These plots were observed according to the principle of polygon plot method, and then the data of plot volume, aver-age height and DBH calculated in polygon plot method were compared with data from the survey of five standard plots.The estimation accuracy of the plot volume is 93.2%, and one of the average height and DBH is up to more than 90% when the polygon plot are made of nine trees.The results can meet the accuracy requirements of forest management inventory. Therefore, the polygon plot method is a rapid and accurate method for forest resources inventory.