干旱区生态环境知识资源中心(Arid): Dynamic growth models for Caragana korshinskii shrub biomass in China

Arid

DOI	10.1016/j.icarus.2020.110675
	Dynamic growth models for Caragana korshinskii shrub biomass in China
	Xu, Hao; Wang, Zhanjun; Li, Ying; He, Jianlong; Wu, Xudong
通讯作者	Xu, H
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2020
卷号	269
英文摘要	The Caragana korshinskii shrub is a widely distributed plant found in arid regions and plays an important role in ecological environment protection. Accurate estimations of shrub biomass are particularly important for natural resource management decision making. 114 individual C. korshinskii shrubs from three regions were collected in northwest China in this study. With regions as fixed (dummy variables) and random effects, the nonlinear least square (NLS) regression approach, nonlinear fixed effects (NLFE) approach and nonlinear mixed effects (NLME) approach were developed to predict dynamic growth of total, aboveground, stem, foliage, and root biomass values of C. korshinskii shrub based on logistic function. Results revealed that both NLFE and NLME models performed better than NLS, which indicated that regions were important factors influenced shrub biomass dynamic growth. Additionally, NLME models had a smaller Bayesian information criterion (BIC) than NLFE models. For NLME models, the random effects of regions mainly influenced the growth rate and asymptotic value of the dynamic growth curve, and there was no significant influence on the values associated with the curve shape. Moreover, the modified NLME models with hetemscedasticity exhibited extremely significant differences (p < 0.0001) when compared to NLME models by the likelihood ratio (LR) test. The NLME models were proved to be an efficient approach for considering the random effects on shrub biomass dynamic growth and accounted for the hetemscedasticity of shrub biomass data.
英文关键词	Dynamic growth models Fixed and mixed effects Heteroscedasticity Caragana korshinskii shrub
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000541757200018
WOS关键词	MIXED-EFFECTS MODELS ; ABOVEGROUND BIOMASS ; ALLOMETRIC EQUATIONS ; COMMON SHRUBS ; CARBON ; VEGETATION ; TREES ; KOM
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324800
作者单位	[Xu, Hao] Ningxia Univ, Sch Econ & Management, Yinchuan, Ningxia, Peoples R China; [Wang, Zhanjun; He, Jianlong; Wu, Xudong] Ningxia Acad Agr & Forestry Sci, Res Inst Desertificat Control, Yinchuan, Ningxia, Peoples R China; [Li, Ying] Ningxia Vocat Tech Coll Ind & Commerce, Yinchuan, Ningxia, Peoples R China
推荐引用方式 GB/T 7714	Xu, Hao,Wang, Zhanjun,Li, Ying,et al. Dynamic growth models for Caragana korshinskii shrub biomass in China[J],2020,269.
APA	Xu, Hao,Wang, Zhanjun,Li, Ying,He, Jianlong,&Wu, Xudong.(2020).Dynamic growth models for Caragana korshinskii shrub biomass in China.JOURNAL OF ENVIRONMENTAL MANAGEMENT,269.
MLA	Xu, Hao,et al."Dynamic growth models for Caragana korshinskii shrub biomass in China".JOURNAL OF ENVIRONMENTAL MANAGEMENT 269(2020).