Study on the Compilation of Binary Volume Equation of Piceaasperata Plantation in Gansu Province

doi:10.13466/j.cnki.lyzygl.2020.01.022

Abstract

Abstract:

Taking Picea asperata plantation in Gansu province as the research object,680 representative sample trees of Picea asperata plantation were selected to study the binary volume equation in this area.The results showed that 12 kinds of volume alternative models by used had good fitting effect.Model 11 and Model 12 are finally determined as the binary volume equations of the artificial spruce forest in Gansu province.Through goodness-of-fit test,this volume model precision met the productive requirement,it can provide scientific basis for forestry investigation,accumulation estimation and scientific management of Picea asperata plantation in Gansu province.

Key words: volume equation, Picea asperata, plantation

CLC Number:

S757
S781

Zhiping LIU, Zongying CAO, Xuhua ZHANG, Shuying YIN. Study on the Compilation of Binary Volume Equation of Piceaasperata Plantation in Gansu Province[J]. FOREST RESOURCES WANAGEMENT, 2020, (1): 172-176.

Figures/Tables 8

Fig.1

Tab.1

Tab.2

Tab.3

Fig.2

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References 13

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模型序号	材积模型方程
1	V=aD^bH^b
2	V=a+bD²H
3	V=aD²+bD²H
4	V=a+bD²+cD²H
5	V=a+bH+cD²H
6	V=a+bH+cD²
7	V=a+bD²+cH+dHD²
8	V=a+bD+cD²+dDH+eHD²
9	V=a+bD²+cD²H+dH²+eDH²
10	V=a+bD²+cDH+dD²H+eD²HlnD
11	V=a+bD+c D²+dDH+eD²H+fH
12	lgV=a+blgD+clg²D+dlgH+elg²H

模型序号	参数估计值
模型序号	a	b	c	d	e	f
1	0.000042	1.509000
2	0.009603	0.000035
3	-0.000009	0.000036
4	0.020600	-0.00009	0.000039
5	-0.015570	0.002618	0.000038
6	-0.166500	0.01176c	0.000654
7	-0.005150	-0.000049	0.002707	0.000038
8	-0.041540	0.008773	-0.000375	-0.000081	0.000045
9	0.011530	0.000024	0.000024	-0.000129	0.000017
10	-0.000992	-0.000110	0.0003904	-0.000006	0.000019
11	-0.040766	0.008589	-0.000366	-0.000104	0.000045	0.000231
12	-3.880282	2.196423	-0.162303	-0.000531	0.472438

序号	和方差(SSE)	确定系数(R-square)	均方根(RMSE)	序号	和方差(SSE)	确定系数(R-square)	均方根(RMSE)
1	0.642843	0.987853	0.035573	7	0.473987	0.991043	0.030606
2	0.546908	0.989665	0.032811	8	0.438704	0.991710	0.029474
3	0.575478	0.989126	0.033658	9	0.452422	0.991451	0.029931
4	0.505439	0.990449	0.031574	10	0.461094	0.991287	0.030187
5	0.517475	0.990222	0.031948	11	0.438547	0.991713	0.029498
6	3.768154	0.928795	0.086211	12	0.427556	0.991921	0.029097

材积式	均方根误差 (RMSE)	总相对相差 (RS/%)
祁连山林区云杉天然林材积式	0.031552	-0.395732
洮河林区云杉天然林材积式	0.032329	-2.057028
甘肃省人工云杉林材积式(11号)	0.029960	-0.070000
甘肃省人工云杉林材积式(12号)	0.030127	0.132907

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