干旱区生态环境知识资源中心(Arid): A simple method for estimating the coarse lateral root biomass of shrubs using ground-penetrating radar: Validation by Caragana microphylla Lam. in Inner Mongolia

Arid

DOI	10.1016/j.scitotenv.2024.170897
	A simple method for estimating the coarse lateral root biomass of shrubs using ground-penetrating radar: Validation by Caragana microphylla Lam. in Inner Mongolia
	Zhang, Luyun; Zhang, Zheng; Guo, Li; Cui, Xihong; Butnor, John R.; Li, Shupeng; Cao, Xin; Chen, Xuehong
通讯作者	Cui, XH
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2024
卷号	919
英文摘要	The potential increases in carbon stocks in arid regions due to recent shrub encroachment have attracted extensive interest among both ecologists and carbon policy analysts. Quantifying the shrub root biomass amount in these ecosystems is essential to understanding the ecological changes occurring. In this paper, we proposed a simple nondestructive method for estimating the coarse lateral root biomass of shrubs based on the root counts obtained from ground -penetrating radar (GPR) radargrams. Root data were gathered via field experiments using GPR with antenna center frequencies of 900 MHz and 400 MHz. Five Caragana microphylla Lam. shrubs of different sizes were selected for measuring objects, and a total of 40 GPR survey lines were established for GPR data acquisition. The soil profile wall excavation method was used to obtain the total root biomass from each radargram. A model for estimating the root biomass was built by establishing the relationship between the root biomass in each profile and the root counts interpreted from the radargrams. According to the mathematical relationship between the root diameter and root biomass, the proxy root radius was derived, which could explain the rationality of the proposed model from the biological mechanism. The established model provided high confidence in estimating the root dry biomass using the GPR data obtained at the two antenna frequencies (R2= 0.73 for 900 MHz and R2= 0.71 for 400 MHz). The leave -one -out cross -validation results showed that the model exhibits satisfactory performance. This study expands the application of geophysical methods in root research and offers a new simplified method for estimating the root biomass from GPR data under field conditions.
英文关键词	Ground-penetrating radar Shrub root system Root biomass Root counts
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001188930600001
WOS关键词	ECOSYSTEM CARBON ; TREE ROOTS ; ABOVEGROUND BIOMASS ; SOIL-MOISTURE ; FOREST ; SYSTEM ; ORIENTATION ; DYNAMICS ; ARCHITECTURE ; ALLOCATION
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/2XILL650/405469
推荐引用方式 GB/T 7714	Zhang, Luyun,Zhang, Zheng,Guo, Li,et al. A simple method for estimating the coarse lateral root biomass of shrubs using ground-penetrating radar: Validation by Caragana microphylla Lam. in Inner Mongolia[J],2024,919.
APA	Zhang, Luyun.,Zhang, Zheng.,Guo, Li.,Cui, Xihong.,Butnor, John R..,...&Chen, Xuehong.(2024).A simple method for estimating the coarse lateral root biomass of shrubs using ground-penetrating radar: Validation by Caragana microphylla Lam. in Inner Mongolia.SCIENCE OF THE TOTAL ENVIRONMENT,919.
MLA	Zhang, Luyun,et al."A simple method for estimating the coarse lateral root biomass of shrubs using ground-penetrating radar: Validation by Caragana microphylla Lam. in Inner Mongolia".SCIENCE OF THE TOTAL ENVIRONMENT 919(2024).