4 CONCLUSION
Because of the importance of the Three Northern
regions to Chinese "dual carbon" action, it is
suggested to strengthen the continuous monitoring
and evaluation of the Three Northern shelterbelts, and
use the combination of remote sensing technology
and ground observation to obtain more detailed and
long time series data, which can also make up for the
shortcomings of the small spatiotemporal range and
fracture of the experiment, and the incomplete
accuracy of the experimental results. To study the
temporal and spatial changes of carbon sink capacity,
and actively estimate the potential of forest carbon
sink. At the same time, in forest management, the
impact of climate change should be considered, and
management action need be taken adjusting to local
natural conditions, such as disaster prevention and
mitigation, selecting drought-tolerant and water-
tolerant tree species, and avoiding planting a large
number of single tree species, so as to improve the
forest resistance and carbon sink capacity, so as to
achieve the goal of carbon neutrality as soon as
possible.
Certainly, human intervention and protective
strategies for forestry are of paramount importance.
The scenario of curbing global warming is escalating
in severity and urgency, yet behavior of remnants
of deforestation and the subsequent situation of
reduction of forest carbon sinks persist. Initiatives
such as reverting cropland to forested land and
implementing stringent control measures can people
pay attention to, coupled with penalties for unchecked
deforestation, comprise various tactics aimed at
safeguarding the ecological resources within this
expansive carbon reserve. In conclusion, extensive
research underscores the indispensable and
substantial role that the Three North regions will play
in China's, and indeed the world's, future. This role is
intrinsically linked to the sustainability of human
society, economic progression, and ultimate
prosperity.
In the whole research process, the primary
productivity and vegetation coverage of the three
northern regions were analyzed from a large spatio-
temporal range by remote sensing. Compared with
the field survey, the whole result was faster and more
intuitive. However, due to the difference in data
quality and other reasons, the limitations of the
research results were also shown. The spatio-
temporal span of the results failed to clearly show the
whole change process. Secondly, only several land
cover types were used in the study, which will have
an impact on the results. Therefore, future studies can
explore the carbon sink in the three North regions in
a finer spatio-temporal range.
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