Distribution and storage of soil organic and inorganic carbon in steppe riparian wetlands under human activity pressure
Soil organic carbon (SOC) and soil inorganic carbon (SIC) are key components of the global wetland soil carbon pool, which plays a crucial role in carbon cycling. However, research on carbon storage in riparian wetland soils, especially in inland steppe river environments impacted by human activitie...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Ecological Indicators |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X22004162 |
| _version_ | 1811257251245064192 |
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| author | Xinyu Liu Xixi Lu Ruihong Yu Heyang Sun Xiangwei Li Xiang Li Zhen Qi Tingxi Liu Changwei Lu |
| author_facet | Xinyu Liu Xixi Lu Ruihong Yu Heyang Sun Xiangwei Li Xiang Li Zhen Qi Tingxi Liu Changwei Lu |
| author_sort | Xinyu Liu |
| collection | DOAJ |
| description | Soil organic carbon (SOC) and soil inorganic carbon (SIC) are key components of the global wetland soil carbon pool, which plays a crucial role in carbon cycling. However, research on carbon storage in riparian wetland soils, especially in inland steppe river environments impacted by human activities, is relatively scarce. Thus, we evaluated the SOC and SIC distributions and storage in riparian wetland soils under the pressure of human activities in the Xilin River Basin (XRB). We collected surface and profile soil samples, determined the SOC and SIC contents, aboveground biomass, and soil physicochemical properties, and calculated the SOC and SIC storage (SOCs and SICs) values. The surface soil SOC content decreased substantially from the upstream to the downstream zones (mean value range: 76.30–3.18 g/kg), and the SIC content showed the opposite trend (mean value range: 0.08–34.38 g/kg). The SIC content of the riparian wetlands along the permanently flowing stretch of river was much lower than that in the wetlands along the intermittently flowing stretch. In the XRB, the SOCs was primarily affected by vegetation coverage, soil water content, and soil pH, whereas the SICs was greatly affected by soil texture. A dry lake zone was markedly affected by wetland degradation, indicating a potential increase in the decomposition rate of the surface soil SOC; however, the SOC in the deep soils was relatively stable. The high SIC content most likely resulted from weathering, resuspension, and carbonate rock reprecipitation. Compared to different steppe grassland types, riparian wetlands appear to be potential hotspots of SOCs and SICs in the Inner Mongolian region. Riparian wetland SOCs in the upstream zones was substantially greater than in adjacent terrestrial locations. However, the SOCs in the downstream wetlands was similar to that in the grasslands. Under the impact of human activities, the water and soil environments in the downstream zone of the Xilin River were substantially modified, leading to severe wetland degradation, which most likely caused the carbon storage function of the riparian wetlands to weaken and carbon loss to accelerate. The mean SOCs in the riparian wetland soils decreased from 33.3 kg/m2 in the upstream area to 16.2 kg/m2 downstream, and the mean SICs increased from 2.3 kg/m2 to 34.6 kg/m2. Therefore, urgent measures are needed to restore the carbon sink function of river wetlands for long-term climate change mitigation. |
| first_indexed | 2024-04-12T17:53:35Z |
| format | Article |
| id | doaj.art-3d81259521b64d358ecffd0841980fb1 |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-04-12T17:53:35Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-3d81259521b64d358ecffd0841980fb12022-12-22T03:22:25ZengElsevierEcological Indicators1470-160X2022-06-01139108945Distribution and storage of soil organic and inorganic carbon in steppe riparian wetlands under human activity pressureXinyu Liu0Xixi Lu1Ruihong Yu2Heyang Sun3Xiangwei Li4Xiang Li5Zhen Qi6Tingxi Liu7Changwei Lu8Inner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, ChinaInner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, China; Department of Geography, National University of Singapore, 117570 Singapore, Singapore; Corresponding authors at: Inner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, China.Inner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, China; Key Laboratory of Mongolian Plateau Ecology and Resource Utilization, Ministry of Education, Hohhot 010021, China; Corresponding authors at: Inner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, China.Inner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, ChinaInner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, ChinaInner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, ChinaInner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, ChinaInner Mongolia Water Resource Protection and Utilization Key Laboratory, Water Conservancy and Civil Engineering College, Inner Mongolia Agricultural University, Hohhot, ChinaInner Mongolia Key Laboratory of River and Lake Ecology, School of Ecology and Environment in Inner Mongolia University, Hohhot 010021, ChinaSoil organic carbon (SOC) and soil inorganic carbon (SIC) are key components of the global wetland soil carbon pool, which plays a crucial role in carbon cycling. However, research on carbon storage in riparian wetland soils, especially in inland steppe river environments impacted by human activities, is relatively scarce. Thus, we evaluated the SOC and SIC distributions and storage in riparian wetland soils under the pressure of human activities in the Xilin River Basin (XRB). We collected surface and profile soil samples, determined the SOC and SIC contents, aboveground biomass, and soil physicochemical properties, and calculated the SOC and SIC storage (SOCs and SICs) values. The surface soil SOC content decreased substantially from the upstream to the downstream zones (mean value range: 76.30–3.18 g/kg), and the SIC content showed the opposite trend (mean value range: 0.08–34.38 g/kg). The SIC content of the riparian wetlands along the permanently flowing stretch of river was much lower than that in the wetlands along the intermittently flowing stretch. In the XRB, the SOCs was primarily affected by vegetation coverage, soil water content, and soil pH, whereas the SICs was greatly affected by soil texture. A dry lake zone was markedly affected by wetland degradation, indicating a potential increase in the decomposition rate of the surface soil SOC; however, the SOC in the deep soils was relatively stable. The high SIC content most likely resulted from weathering, resuspension, and carbonate rock reprecipitation. Compared to different steppe grassland types, riparian wetlands appear to be potential hotspots of SOCs and SICs in the Inner Mongolian region. Riparian wetland SOCs in the upstream zones was substantially greater than in adjacent terrestrial locations. However, the SOCs in the downstream wetlands was similar to that in the grasslands. Under the impact of human activities, the water and soil environments in the downstream zone of the Xilin River were substantially modified, leading to severe wetland degradation, which most likely caused the carbon storage function of the riparian wetlands to weaken and carbon loss to accelerate. The mean SOCs in the riparian wetland soils decreased from 33.3 kg/m2 in the upstream area to 16.2 kg/m2 downstream, and the mean SICs increased from 2.3 kg/m2 to 34.6 kg/m2. Therefore, urgent measures are needed to restore the carbon sink function of river wetlands for long-term climate change mitigation.http://www.sciencedirect.com/science/article/pii/S1470160X22004162Riparian wetlandsSoil organic carbonSoil inorganic carbonStorageHuman activitiesWetland degradation |
| spellingShingle | Xinyu Liu Xixi Lu Ruihong Yu Heyang Sun Xiangwei Li Xiang Li Zhen Qi Tingxi Liu Changwei Lu Distribution and storage of soil organic and inorganic carbon in steppe riparian wetlands under human activity pressure Ecological Indicators Riparian wetlands Soil organic carbon Soil inorganic carbon Storage Human activities Wetland degradation |
| title | Distribution and storage of soil organic and inorganic carbon in steppe riparian wetlands under human activity pressure |
| title_full | Distribution and storage of soil organic and inorganic carbon in steppe riparian wetlands under human activity pressure |
| title_fullStr | Distribution and storage of soil organic and inorganic carbon in steppe riparian wetlands under human activity pressure |
| title_full_unstemmed | Distribution and storage of soil organic and inorganic carbon in steppe riparian wetlands under human activity pressure |
| title_short | Distribution and storage of soil organic and inorganic carbon in steppe riparian wetlands under human activity pressure |
| title_sort | distribution and storage of soil organic and inorganic carbon in steppe riparian wetlands under human activity pressure |
| topic | Riparian wetlands Soil organic carbon Soil inorganic carbon Storage Human activities Wetland degradation |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X22004162 |
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