Effects of long-term land use change on dissolved carbon characteristics in the permafrost streams of northeast China

2014 ◽  
Vol 16 (11) ◽  
pp. 2496-2506 ◽  
Author(s):  
Yuedong Guo ◽  
Changchun Song ◽  
Zhongmei Wan ◽  
Wenwen Tan ◽  
Yongzheng Lu ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Land Use Change ◽  
Northeast China ◽  
Dissolved Carbon ◽  
Highly Sensitive ◽  
Permafrost Soils

Permafrost soils act as large sinks of organic carbon but are highly sensitive to interference such as changes in land use, which can greatly influence dissolved carbon loads in streams.

scholarly journals Impacts of land use change in soil carbon and nitrogen in a Mediterranean agricultural area (Southern Spain)

Solid Earth ◽  
2013 ◽  
Vol 4 (1) ◽  
pp. 167-177 ◽  
Author(s):  
L. Parras-Alcántara ◽  
M. Martín-Carrillo ◽  
B. Lozano-García
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Land Use Change ◽  
Total Nitrogen ◽  
Negative Impact ◽  
Long Term Effects ◽  
Arable Crops ◽  
Carbon And Nitrogen ◽  
Soc Stock

Abstract. The agricultural Mediterranean areas are dedicated to arable crops (AC), but in the last decades, a significant number of AC has led to a land use change (LUC) to olive grove (OG) and vineyards (V). A field study was conducted to determine the long-term effects (46 years) of LUC (AC by OG and V) and to determine soil organic carbon (SOC), total nitrogen (TN), C : N ratio and their stratification across the soil entire profile, in Montilla-Moriles denomination of origin (D.O.), in Calcic-Chromic Luvisols (LVcc/cr), an area under semiarid Mediterranean conditions. The experimental design consisted of studying the LUC on one farm between 1965 and 2011. Originally, only AC was farmed in 1965, but OG and V were farmed up to now (2011). This LUC principally affected the horizon thickness, texture, bulk density, pH, organic matter, organic carbon, total nitrogen and C : N ratio. The LUC had a negative impact in the soil, affecting the SOC and TN stocks. The conversion from AC to V and OG involved the loss of the SOC stock (52.7% and 64.9% to V and OG respectively) and the loss of the TN stock (42.6% and 38.1% to V and OG respectively). With respect to the stratification ratios (SRs), the effects were opposite; 46 years after LUC increased the SRs (in V and OG) of SOC, TN and C : N ratio.

scholarly journals Land-use change effects on soil quality in Montilla-Moriles DO, Southern Spain

2013 ◽  
Vol 5 (1) ◽  
pp. 163-187
Author(s):  
M. Martín-Carrillo ◽  
L. Parras-Alcántara ◽  
B. Lozano-García
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Land Use Change ◽  
Soil Quality ◽  
Total Nitrogen ◽  
Negative Impact ◽  
C:N Ratio ◽  
Long Term Effects ◽  
Arable Crops

Abstract. The agricultural Mediterranean areas are dedicated to arable crops (AC), but in the last few decades, a significant number of AC has a land use change (LUC) to olive grove cultivations (OG) and vineyards (V). A field study was conducted to determine the long-term effects (46 yr) of LUC (AC by OG and V) and to determine soil organic carbon (SOC), total nitrogen (TN), C:N ratio and their stratification across the soil entire profile, in Montilla-Moriles denomination of origin (DO), in Calcic-Chromic Luvisols (LVcc/cr), an area under semiarid Mediterranean conditions. The experimental design consisted of studying the LUC on one farm between 1965 and 2011. Originally, only AC was farmed in 1965, but OG and V were farmed up to now (2011). This LUC principally affected the thickness horizon, texture, bulk density, pH, organic matter, organic carbon, total nitrogen and C:N ratio. The LUC had a negative impact in the soil, affecting the SOC and TN stocks. The conversion from AC to V and OG involved the loss of the SOC stock (52.7% and 64.9% to V and OG, respectively) and the loss of the TN stock (42.6% and 38.1% to V and OG, respectively). With respect to the soil quality, the effect was opposite; 46\\,yr after LUC improved the soil quality, increasing the stratification ratio (in V and OG) of SOC, TN and C:N ratio.

scholarly journals Dynamics of soil organic carbon following land-use change: insights from stable C-isotope analysis in black soil of Northeast China

2018 ◽  
Vol 37 (5) ◽  
pp. 746-757 ◽  
Author(s):  
Chenglong Tu ◽  
Congqiang Liu ◽  
Timothy A. Quine ◽  
Matthew William Jones ◽  
Taoze Liu ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Land Use Change ◽  
Soil Organic Carbon ◽  
Northeast China ◽  
Isotope Analysis ◽  
Black Soil

scholarly journals Dynamics of soil organic carbon in the steppes of Russia and Kazakhstan under past and future climate and land use

2021 ◽  
Vol 21 (3) ◽  
Author(s):  
Susanne Rolinski ◽  
Alexander V. Prishchepov ◽  
Georg Guggenberger ◽  
Norbert Bischoff ◽  
Irina Kurganova ◽  
...  
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Organic Carbon ◽  
Land Use Change ◽  
Soil Organic Carbon ◽  
Arable Land ◽  
Future Climate ◽  
Future Climate Change ◽  
Climate Scenarios ◽  
The Impact

AbstractChanges in land use and climate are the main drivers of change in soil organic matter contents. We investigated the impact of the largest policy-induced land conversion to arable land, the Virgin Lands Campaign (VLC), from 1954 to 1963, of the massive cropland abandonment after 1990 and of climate change on soil organic carbon (SOC) stocks in steppes of Russia and Kazakhstan. We simulated carbon budgets from the pre-VLC period (1900) until 2100 using a dynamic vegetation model to assess the impacts of observed land-use change as well as future climate and land-use change scenarios. The simulations suggest for the entire VLC region (266 million hectares) that the historic cropland expansion resulted in emissions of 1.6⋅ 1015 g (= 1.6 Pg) carbon between 1950 and 1965 compared to 0.6 Pg in a scenario without the expansion. From 1990 to 2100, climate change alone is projected to cause emissions of about 1.8 (± 1.1) Pg carbon. Hypothetical recultivation of the cropland that has been abandoned after the fall of the Soviet Union until 2050 may cause emissions of 3.5 (± 0.9) Pg carbon until 2100, whereas the abandonment of all cropland until 2050 would lead to sequestration of 1.8 (± 1.2) Pg carbon. For the climate scenarios based on SRES (Special Report on Emission Scenarios) emission pathways, SOC declined only moderately for constant land use but substantially with further cropland expansion. The variation of SOC in response to the climate scenarios was smaller than that in response to the land-use scenarios. This suggests that the effects of land-use change on SOC dynamics may become as relevant as those of future climate change in the Eurasian steppes.

scholarly journals CH4and N2O fluxes in the Colorado shortgrass steppe: 2. Long-term impact of land use change

1997 ◽  
Vol 11 (1) ◽  
pp. 29-42 ◽  
Author(s):  
A. R. Mosier ◽  
W. J. Parton ◽  
D. W. Valentine ◽  
D. S. Ojima ◽  
D. S. Schimel ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Shortgrass Steppe ◽  
N2o Fluxes ◽  
Long Term Impact

The Effects of Long‐Term Land‐Use Change on Soil Properties in Perth, Ontario Canada

2016 ◽  
Author(s):  
Trina Stephens
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
North America ◽  
Land Use Change ◽  
Soil Properties ◽  
Carbon Storage ◽  
Organic Matter Content ◽  
Matter Content ◽  
Topographic Gradients

Land‐use change can have a major impact on soil properties, leading to long‐term changes in soilnutrient cycling rates and carbon storage. While a substantial amount of research has been conducted onland‐use change in tropical regions, empirical evidence of long‐term conversion of forested land toagricultural land in North America is lacking. Pervasive deforestation for the sake of agriculturethroughout much of North America is likely to have modified soil properties, with implications for theglobal climate. Here, we examined the response of physical, chemical and biological soil properties toconversion of forest to agricultural land (100 years ago) on Roebuck Farm near Perth, Ontario, Canada.Soil samples were collected at three sites from under forest and agricultural vegetative cover on bothhigh‐ and low‐lying topographic positions (12 locations in total; soil profile sampled to a depth of 40cm).Our results revealed that bulk density, pH, and nitrate concentrations were all higher in soils collectedfrom cultivate sites. In contrast, samples from forested sites exhibited greater water‐holding capacity,porosity, organic matter content, ammonia concentrations and cation exchange capacity. Many of these characteristics are linked to greater organic matter abundance and diversity in soils under forestvegetation as compared with agricultural soils. Microbial activity and Q10 values were also higher in theforest soils. While soil properties in the forest were fairly similar across topographic gradients, low‐lyingpositions under agricultural regions had higher bulk density and organic matter content than upslopepositions, suggesting significant movement of material along topographic gradients. Differences in soilproperties are attributed largely to increased compaction and loss of organic matter inputs in theagricultural system. Our results suggest that the conversion of forested land cover to agriculture landcover reduces soil quality and carbon storage, alters long‐term site productivity, and contributes toincreased atmospheric carbon dioxide concentrations.

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