气候变化领域集成服务门户(CCPortal): Aboveground Biomass Mapping and Analysis of Spatial Drivers in the Qinghai-Xizang Plateau Permafrost Zone: A Case Study of the Beilu River Basin

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DOI	10.3390/plants13050686
	Aboveground Biomass Mapping and Analysis of Spatial Drivers in the Qinghai-Xizang Plateau Permafrost Zone: A Case Study of the Beilu River Basin
	Wu, Yamin; Zhao, Jingyi; Chen, Ji; Zhang, Yaonan; Yang, Bin; Ma, Shen; Kang, Jianfang; Zhao, Yanggang; Miao, Zhenggong
发表日期	2024
ISSN	2223-7747
起始页码	13
结束页码	5
卷号	13 期号:5
英文摘要	Aboveground biomass (AGB) serves as a crucial measure of ecosystem productivity and carbon storage in alpine grasslands, playing a pivotal role in understanding the dynamics of the carbon cycle and the impacts of climate change on the Qinghai-Xizang Plateau. This study utilized Google Earth Engine to amalgamate Landsat 8 and Sentinel-2 satellite imagery and applied the Random Forest algorithm to estimate the spatial distribution of AGB in the alpine grasslands of the Beiliu River Basin in the Qinghai-Xizang Plateau permafrost zone during the 2022 growing season. Additionally, the geodetector technique was employed to identify the primary drivers of AGB distribution. The results indicated that the random forest model, which incorporated the normalized vegetation index (NDVI), the enhanced vegetation index (EVI), the soil-adjusted vegetation index (SAVI), and the normalized burn ratio index (NBR2), demonstrated robust performance in regards to AGB estimation, achieving an average coefficient of determination (R2) of 0.76 and a root mean square error (RMSE) of 70 g/m2. The average AGB for alpine meadows was determined to be 285 g/m2, while for alpine steppes, it was 204 g/m2, both surpassing the regional averages in the Qinghai-Xizang Plateau. The spatial pattern of AGB was primarily driven by grassland type and soil moisture, with q-values of 0.63 and 0.52, and the active layer thickness (ALT) also played a important role in AGB change, with a q-value of 0.38, demonstrating that the influences of ALT should not be neglected in regards to grassland change.
英文关键词	aboveground biomass; Qinghai-Xizang Plateau; random forest; geodetector; alpine grassland; permafrost; Beilu River Basin
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001183060600001
来源期刊	PLANTS-BASEL
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299111
作者单位	Chinese Academy of Sciences; Chinese Academy of Sciences
推荐引用方式 GB/T 7714	Wu, Yamin,Zhao, Jingyi,Chen, Ji,et al. Aboveground Biomass Mapping and Analysis of Spatial Drivers in the Qinghai-Xizang Plateau Permafrost Zone: A Case Study of the Beilu River Basin[J],2024,13(5).
APA	Wu, Yamin.,Zhao, Jingyi.,Chen, Ji.,Zhang, Yaonan.,Yang, Bin.,...&Miao, Zhenggong.(2024).Aboveground Biomass Mapping and Analysis of Spatial Drivers in the Qinghai-Xizang Plateau Permafrost Zone: A Case Study of the Beilu River Basin.PLANTS-BASEL,13(5).
MLA	Wu, Yamin,et al."Aboveground Biomass Mapping and Analysis of Spatial Drivers in the Qinghai-Xizang Plateau Permafrost Zone: A Case Study of the Beilu River Basin".PLANTS-BASEL 13.5(2024).