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Volume 8, Issue 10 (Suppl)
J Earth Sci Clim Change, an open access
ISSN: 2157-7617
Climate Change 2017
October 19-21, 2017
CLIMATE CHANGE
October 19-21, 2017 | Rome, Italy
4
th
World Conference on
J Earth Sci Clim Change 2017, 8:10(Suppl)
DOI: 10.4172/2157-7617-C1-037
Study on carbon sequestration potential of grassland protection and construction techniques in key
ecological type area from northern China grassland
Xiangyang Hou, Yuanheng Li
and
Lei Ji
Chinese Academy of Agricultural Sciences, China
S
tatement of the Problem: Under the background of global climate change, the carbon source/sink problem of terrestrial
ecosystems has become one of the hot issues in international ecological research. As the largest terrestrial ecosystem, the
China's grass land is mostly used for grazing, and unreasonable grazing is considered to be the main incentives lead to last
degradation of grassland ecosystem. However, the study on the evaluation of the carbon sequestration potential of the grassland
ecosystem in northern China is still relatively less. Therefore, this study is focused on the influence of the conservation and
construction techniques (enclosure, clipping and grazing) in main ecological type area from northern China on carbon density,
carbon budget and carbon sequestration potential in vegetation-soil ecosystem. Methodology &Theoretical Orientation: Based
on random block control experiment, the protection and construction techniques, such as enclosure, clipping and different
grazing intensity, were established in different ecological type area, including typical steppe, meadow steppe, desert steppe and
sandy steppe, to study the influence on carbon storage in grassland vegetation-soil ecosystem. And the key technical solutions
of carbon sequestration potential, carbon increasing potential and enrich carbon sink in different grassland type area are put
forward. Findings: The order of carbon sequestration potential in different kinds of grassland is meadow steppe (30.57 kg/m
2
)>
typical steppe(18.51kg/m
2
)>desert steppe(15.84 kg/m
2
) >sandy steppe(2.58 kg/m
2
); the carbon increase amplitude is meadow
steppe(0-25.31 kg/m
2
)> typical steppe(0-3.87 kg/m
2
)> sandy steppe (0-1.45 kg/m
2
); and the carbon increasing potential is
typical steppe (1.26 kg/m
2
)> desert steppe (0.31 kg/m
2
)>sandy steppe (0.20 kg/m
2
).In addition, years of enclosure in meadow
steppe benefits the carbon sequestration system, but moderate grazing and utilization is good for carbon sequestration in
typical steppe, desert steppe and sandysteppe.
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