ORIGINAL RESEARCH
Impacts of Improved Carbon Density on Carbon
Stocks in Typical Dryland Terrestrial Ecosystems
in China and the Driving Mechanism Analysis
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1
Xinjiang Key Laboratory of Soil and Plant Ecological Processes, Xinjiang Agricultural University,
Urumqi 830052, China
2
School of Life Sciences, Hebei University, Baoding, 071002, China
3
Xinjiang Engineering Technology Research Center of Soil Big Data, Xinjiang Agricultural University,
Urumqi 830052, China
Submission date: 2024-11-23
Final revision date: 2025-02-20
Acceptance date: 2025-04-06
Online publication date: 2025-06-18
Corresponding author
Mingjie Shi
Xinjiang Key Laboratory of Soil and Plant Ecological Processes, Xinjiang Agricultural University,
Urumqi 830052, China
Hongqi Wu
Xinjiang Key Laboratory of Soil and Plant Ecological Processes, Xinjiang Agricultural University,
Urumqi 830052, China
KEYWORDS
TOPICS
ABSTRACT
In recent years, global warming caused by greenhouse gases has seriously affected the living
environment of human beings. It is of great significance to study the temporal and spatial evolution
and simulation of carbon stocks under land use and climate change to understand the global carbon
cycle, formulate policies to reduce emissions and increase sequestration, and achieve the goal of
carbon neutrality. However, it is a major problem to obtain carbon density data. Xinjiang is located
in the northwest and should protect the ecological service system, while Manas County, located
in the hinterland of Xinjiang, is a relatively complete ecosystem service functional area, and it is also
an important area that constitutes an ecological environmental protection barrier, so people should
pay more attention to protecting the ecological service system in this area. This paper presents
a comprehensive analysis of carbon stocks in terrestrial ecosystems in Manas, a typical arid zone,
based on an improved carbon density index; the results of the study show that from 2000 to 2020,
land use in Manas County has changed dramatically, with the area of unused and forested land
decreasing and the area of arable land continuing to increase, which is of great significance for
the reclamation of reserve arable land in Xinjiang. In addition, the spatial distribution pattern of
total carbon stock in the study area did not differ much in different periods, with an overall increasing
trend from southeast to northwest and a continuous decreasing trend in the spatial amount of forest
carbon stock. This trend may inhibit the sustainable development of China’s dual-carbon policy.
The results of the driving mechanism in Manas County showed the nonlinear enhancement of NDVI
and temperature, and the two-factor enhancement of NDVI and precipitation. Finally, this study
highlights the necessity of accurately estimating the carbon density corrected for dryland areas with incoming analyses of their driving mechanisms. This is crucial for the validation and parameterization
of Chinese and global carbon models.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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