防护林科技
防護林科技
방호림과기
Protection Forest Science and Technology
2015年
10期
53-55
,共3页
穆棱地区%椴树%白桦%冷杉%云杉%红松%叶面积
穆稜地區%椴樹%白樺%冷杉%雲杉%紅鬆%葉麵積
목릉지구%단수%백화%랭삼%운삼%홍송%협면적
Muling Region%Tilia tuan%Betula platyphylla%Pinus koraiensis%Abies fabric%Picea asperata
基于穆棱市椴树、白桦、红松、冷杉和云杉5个树种的叶面积数据，采用二次抛物线形式拟合了各个树种树冠上层、中层、下层的叶面积与年龄之间的模型，并以红松为例绘制了各个层次叶面积与年龄的关系。结果表明：二次抛物线模型对椴树和红松的叶面积进行很好的拟合，模型的拟合优度很高，参数的稳定性很好，而其他树种的拟合效果则相对较差。通过绘制红松的叶面积与年龄的关系曲线可以看出，上层和下层的叶面积随着年龄的增大均在60年出现了峰值。
基于穆稜市椴樹、白樺、紅鬆、冷杉和雲杉5箇樹種的葉麵積數據，採用二次拋物線形式擬閤瞭各箇樹種樹冠上層、中層、下層的葉麵積與年齡之間的模型，併以紅鬆為例繪製瞭各箇層次葉麵積與年齡的關繫。結果錶明：二次拋物線模型對椴樹和紅鬆的葉麵積進行很好的擬閤，模型的擬閤優度很高，參數的穩定性很好，而其他樹種的擬閤效果則相對較差。通過繪製紅鬆的葉麵積與年齡的關繫麯線可以看齣，上層和下層的葉麵積隨著年齡的增大均在60年齣現瞭峰值。
기우목릉시단수、백화、홍송、랭삼화운삼5개수충적협면적수거，채용이차포물선형식의합료각개수충수관상층、중층、하층적협면적여년령지간적모형，병이홍송위례회제료각개층차협면적여년령적관계。결과표명：이차포물선모형대단수화홍송적협면적진행흔호적의합，모형적의합우도흔고，삼수적은정성흔호，이기타수충적의합효과칙상대교차。통과회제홍송적협면적여년령적관계곡선가이간출，상층화하층적협면적수착년령적증대균재60년출현료봉치。
Based on the data of leaf area for Tilia tuan ,Betula platyphylla ,Pinus koraiensis ,Abies fabric & Pi-cea asperata in Muling City,model of leaf area and age of upper,middle,lower crown among each species was fitted by using second-degree parabola,relationship between leaf area and ages at all levels was drawn.Result show that:a parabolic line model of linden trees and pine leaf area were well fitted,high goodness of fit of the model,the sta-bility of the parameters is good and fitting effect of other species are relatively poor.Relationship curve drawn by leaf area and age of Pinus koraiensis shows that,the leaf area in upper and lower layers increases with the increase of the age,and both appear peak in the sixtieth year.
