Spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of China between 1980 and 2000
Spatial distributions of 0–20 cm soil carbon sources/sinks caused by land use changes from the year 1980 to 2000 in an area of 2.97 × 106 km2 in eastern China were investigated using a land use dataset from a recent soil geochemical survey. A map of soil carbon sources/sinks has been prepared based...
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Elsevier
2017-05-01
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| Series: | Geoscience Frontiers |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674987116300573 |
| _version_ | 1797724442295533568 |
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| author | Xueqi Xia Zhongfang Yang Yuan Xue Xin Shao Tao Yu Qingye Hou |
| author_facet | Xueqi Xia Zhongfang Yang Yuan Xue Xin Shao Tao Yu Qingye Hou |
| author_sort | Xueqi Xia |
| collection | DOAJ |
| description | Spatial distributions of 0–20 cm soil carbon sources/sinks caused by land use changes from the year 1980 to 2000 in an area of 2.97 × 106 km2 in eastern China were investigated using a land use dataset from a recent soil geochemical survey. A map of soil carbon sources/sinks has been prepared based on a spatial analysis scheme with GIS. Spatial statistics showed that land use changes had caused 30.7 ± 13.64 Tg of surface soil organic carbon loss, which accounts for 0.33% of the total carbon storage of 9.22 Pg. The net effect of the carbon source was estimated to be ∼71.49 Tg soil carbon decrease and ∼40.80 Tg increase. Land use changes in Northeast China (NE) have the largest impact on soil organic carbon storage compared with other regions. Paddy fields, which were mainly transformed into dry farmland in NE, and constructed land in other regions, were the largest carbon sources among the land use types. Swamp land in NE was also another large soil carbon source when it was transformed into dry farmland or paddy fields. Dry farmland in the NE region formed the largest soil organic carbon sink, as some were transformed into paddy fields, forested land, and other land use types with high SOCD. |
| first_indexed | 2024-03-12T10:17:18Z |
| format | Article |
| id | doaj.art-fed40597a4fc4186bae184f59a0925f5 |
| institution | Directory Open Access Journal |
| issn | 1674-9871 |
| language | English |
| last_indexed | 2024-03-12T10:17:18Z |
| publishDate | 2017-05-01 |
| publisher | Elsevier |
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| series | Geoscience Frontiers |
| spelling | doaj.art-fed40597a4fc4186bae184f59a0925f52023-09-02T10:24:43ZengElsevierGeoscience Frontiers1674-98712017-05-018359760310.1016/j.gsf.2016.06.003Spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of China between 1980 and 2000Xueqi Xia0Zhongfang Yang1Yuan Xue2Xin Shao3Tao Yu4Qingye Hou5School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, ChinaSchool of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, ChinaChongqing Institute of Land Surveying and Planning, Chongqing 404000, ChinaSchool of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, ChinaSchool of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, ChinaSchool of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, ChinaSpatial distributions of 0–20 cm soil carbon sources/sinks caused by land use changes from the year 1980 to 2000 in an area of 2.97 × 106 km2 in eastern China were investigated using a land use dataset from a recent soil geochemical survey. A map of soil carbon sources/sinks has been prepared based on a spatial analysis scheme with GIS. Spatial statistics showed that land use changes had caused 30.7 ± 13.64 Tg of surface soil organic carbon loss, which accounts for 0.33% of the total carbon storage of 9.22 Pg. The net effect of the carbon source was estimated to be ∼71.49 Tg soil carbon decrease and ∼40.80 Tg increase. Land use changes in Northeast China (NE) have the largest impact on soil organic carbon storage compared with other regions. Paddy fields, which were mainly transformed into dry farmland in NE, and constructed land in other regions, were the largest carbon sources among the land use types. Swamp land in NE was also another large soil carbon source when it was transformed into dry farmland or paddy fields. Dry farmland in the NE region formed the largest soil organic carbon sink, as some were transformed into paddy fields, forested land, and other land use types with high SOCD.http://www.sciencedirect.com/science/article/pii/S1674987116300573Land use changeSoil organic carbonGISEastern China |
| spellingShingle | Xueqi Xia Zhongfang Yang Yuan Xue Xin Shao Tao Yu Qingye Hou Spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of China between 1980 and 2000 Geoscience Frontiers Land use change Soil organic carbon GIS Eastern China |
| title | Spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of China between 1980 and 2000 |
| title_full | Spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of China between 1980 and 2000 |
| title_fullStr | Spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of China between 1980 and 2000 |
| title_full_unstemmed | Spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of China between 1980 and 2000 |
| title_short | Spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of China between 1980 and 2000 |
| title_sort | spatial analysis of land use change effect on soil organic carbon stocks in the eastern regions of china between 1980 and 2000 |
| topic | Land use change Soil organic carbon GIS Eastern China |
| url | http://www.sciencedirect.com/science/article/pii/S1674987116300573 |
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