Investigation Method of Root Biomass of Oasis Farmland Shelterbelt

doi:10.13466/j.cnki.lyzygl.2017.05.014

Abstract

Abstract:

Forest carbon sequestration can slow down the deterioration of climate warming,so carbon sink has been a hot research at home and abroad.Plantations of China has become the main body of forestry,the northwest region has become the future forestry development direction,but the northwest carbon sink and biomass research less.In order to explore the northwest area of plantation carbon sink function,and not to destroy the original infrastructure,this research is conducted.In this paper,the growth model of Populus alba var.pyramidalis Bunge.shelterbelt was simulated by the method of space instead time,and the growth model was established according to DBH and tree height from small to large and underground biomass.Based on the investigation of underground biomass,a calculation method,6 steps and corresponding calculation formula of groundwater biomass survey were established,and the growth model of DBH,tree height and underground biomass was established.The DBH and root,lateral root and root biomass models are: $W=0.0268D_{1.3}^{2.1717},W=0.0191D_{1.3}^{2.1346},W=0.0465D_{1.3}^{2.1557}$,the regression relationship is very significant.Compared with the previous model,the models are more reliable and practical.

Key words: root biomass, farmland-channel-forest-road model, farmland shelterbelt, oasis, desert

CLC Number:

S792.11

ZHAO Yingming, LEI Yuancai, YANG Wenbin, BAO Chunyan, GAO Junliang, HUANG Yaru, ZHANG Hongyi. Investigation Method of Root Biomass of Oasis Farmland Shelterbelt[J]. FOREST RESOURCES WANAGEMENT, 2017, 0(5): 78-85.

Figures/Tables 7

Fig.1

Fig.2

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Tab.1

Regression equation of underground biomass of single plant of poplar forest in farmland-channel-forest-road model

地点	组件	回归方程	系数			样本容量	最大胸径/cm	相关系数R
地点	组件	回归方程	a	b	c	样本容量	最大胸径/cm	相关系数R
新疆克拉玛依	根	$W = a D 1.3 b$	0.0378	1.9679	0	6	27.97	0.9995^{[31-32,43-44]}
内蒙磴口		$W = a D 1.3 b$	0.0465	2.1557	0	20	41.97	0.9805
新疆克拉玛依		$W = a D 1.3 2 H b + c$	0.0253	0.7049	0	6	27.97	0.9979^{[31-32,43-44]}
新疆墨玉			1	0.6990	18.627	8	27.4	0.9150^[33]
内蒙磴口			0.0509	0.7351	0	20	41.97	0.9808
新疆疏勒		$W = a D 1.3 b H c$	0.034938	1.03524	0.646576	45	—	0.84698^[42]
内蒙磴口	主根	$W = a D 1.3 b$	0.0268	2.1717	0	20	41.97	0.9804
内蒙磴口	主根	$W = a D 1.3 2 H b$	0.0306	0.7363	0	20	41.97	0.9751
	侧根	$W = a D 1.3 b$	0.0191	2.1346	0	20	41.97	0.9587
	侧根	$W = a D 1.3 2 H b$	0.0197	0.7344	0	20	41.97	0.9677

Tab.1

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