气候变化领域集成服务门户(CCPortal): Spatio-Temporal Dynamic Characteristics of Carbon Use Efficiency in a Virgin Forest Area of Southeast Tibet

CCPortal

DOI	10.3390/rs15092382
	Spatio-Temporal Dynamic Characteristics of Carbon Use Efficiency in a Virgin Forest Area of Southeast Tibet
	Yang, Ziyan; Yu, Qiang; Yang, Ziyu; Peng, Anchen; Zeng, Yufan; Liu, Wei; Zhao, Jikai; Yang, Di
发表日期	2023
EISSN	2072-4292
卷号	15 期号:9
英文摘要	The sequestration of carbon in forests plays a crucial role in mitigating global climate change and achieving carbon neutrality goals. Carbon use efficiency (CUE) is an essential metric used to evaluate the carbon sequestration capacity and efficiency of Vegetation. Previous studies have emphasized the importance of assessing CUE at specific regions and times to better understand its spatiotemporal variations. The southeastern region of Tibet in the Qinghai-Tibet Plateau is recognized as one of the most biodiverse areas in China and globally, characterized by diverse vegetation types ranging from subtropical to temperate. In this study, we focused on Nyingchi, which is the largest virgin forest area in southeast Tibet, to explore the spatial-temporal dynamic characteristics of regional CUE based on MODIS remote sensing products. The following results were obtained: (1) On a monthly scale, regional CUE exhibits significant seasonal variations, with varying patterns among different vegetation types. Specifically, the fluctuation of CUE is the lowest in high-altitude forest areas and the greatest in grasslands and barrens. On an annual scale, forests exhibit higher fluctuations than areas with sparse vegetation and the overall volatility of CUE increased over the past 11 years. (2) There are regional differences in the trend of CUE changes, with a substantial downward trend in the Himalayan region and a significant upward trend in the residual branches of the Gangdise Mountains. More than 75% of the regions exhibit no persistent trend in CUE changes. (3) Vegetation type is the main determinant of the range and characteristics of vegetation CUE changes, while the geographical location and climatic conditions affect the variation pattern. CUE in the southern and northern regions of Nyingchi at 28.5 degrees N exhibits different responses to temperature and precipitation changes, with temperature having a more significant impact on CUE.
关键词	carbon use efficiency (CUE)forest ecosystems Southeast Tibet MODIS
英文关键词	PLANT RESPIRATION; VEGETATION COVER; ECOSYSTEM CARBON; CHINA; MODIS; PLATEAU; DRIVERS; IMPACTS; MODELS; FLUXES
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:000987876300001
来源期刊	REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282644
作者单位	University of Wyoming
推荐引用方式 GB/T 7714	Yang, Ziyan,Yu, Qiang,Yang, Ziyu,et al. Spatio-Temporal Dynamic Characteristics of Carbon Use Efficiency in a Virgin Forest Area of Southeast Tibet[J],2023,15(9).
APA	Yang, Ziyan.,Yu, Qiang.,Yang, Ziyu.,Peng, Anchen.,Zeng, Yufan.,...&Yang, Di.(2023).Spatio-Temporal Dynamic Characteristics of Carbon Use Efficiency in a Virgin Forest Area of Southeast Tibet.REMOTE SENSING,15(9).
MLA	Yang, Ziyan,et al."Spatio-Temporal Dynamic Characteristics of Carbon Use Efficiency in a Virgin Forest Area of Southeast Tibet".REMOTE SENSING 15.9(2023).