Coupling Mode of Water and Fertilizers under Different Soil Erosion Thicknesses in the Black Soil Region of Northeast China

2014 ◽  
Author(s):  
Hui Liu ◽  
Yongxia Wei ◽  
Long Wang ◽  
Xian Wu
Keyword(s):  
Soil Erosion ◽  
Northeast China ◽  
Black Soil ◽  
Black Soil Region ◽  
Coupling Mode

scholarly journals Characteristics of Material Migration During Soil Erosion in Sloped Farmland in the Black Soil Region of Northeast China

2019 ◽  
Vol 12 ◽  
pp. 194008291985683 ◽  
Author(s):  
Congying Shen ◽  
Yu Wang ◽  
Lanpo Zhao ◽  
Xiaohong Xu ◽  
Xiankun Yang ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Specific Surface ◽  
Surface Area ◽  
Soil Nutrients ◽  
Northeast China ◽  
Fine Particles ◽  
Clay Content ◽  
Black Soil ◽  
Available Phosphorus ◽  
Black Soil Region

Loss of soil and water from sloped farmland is a major cause of regional soil degradation and declining productivity. We conducted a preliminary study on the characteristics of sloped farmland in the black soil region of Northeast China using natural rainfall-runoff plot experiments in the field. In 0-20 cm soil depth, clay content (<0.002 mm), silt content (0.002-0.02 mm), specific surface area, <0.002 mm and 0.002 to 0.02 mm microaggregates content, available phosphorus, and total phosphorus tended to increase from the top to the bottom of the slope, while sand content (>0.05 mm), 0.02 to 0.05 mm and 0.05 to 0.25 mm microaggregates content, tended to decline. This suggests that soil material and nutrients were gradually transported from the top to the bottom of the slope because of erosion, soil tended toward desertification in texture, and fertility was degraded. The content of available phosphorus and total phosphorus was positively linearly related to clay content, specific surface area, and 0.002 to 0.02 mm microaggregates content. This indicates that soil nutrients migrated down with fine particles. Therefore, soil erosion leads to the migration and loss of soil nutrients, <0.002 mm fine particles and 0.002 to 0.02 mm microaggregates on the slope, which was the main cause of soil fertility degradation.

Soil erosion along a long slope in the gentle hilly areas of black soil region in Northeast China

2007 ◽  
Vol 17 (3) ◽  
pp. 375-383 ◽  
Author(s):  
Ming Cui ◽  
Qiangguo Cai ◽  
Axing Zhu ◽  
Haoming Fan
Keyword(s):  
Soil Erosion ◽  
Northeast China ◽  
Black Soil ◽  
Black Soil Region

Spatial and temporal variability of soil erosion in the black soil region of Northeast China from 2000 to 2015

2020 ◽  
Vol 192 (6) ◽  
Author(s):  
Biwei Wang ◽  
Xiaoli Zhao ◽  
Xiao Wang ◽  
Zengxiang Zhang ◽  
Ling Yi ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Temporal Variability ◽  
Northeast China ◽  
Black Soil ◽  
Spatial And Temporal Variability ◽  
Black Soil Region

scholarly journals A Quantitative Analysis of Factors Influencing Organic Matter Concentration in the Topsoil of Black Soil in Northeast China Based on Spatial Heterogeneous Patterns

2021 ◽  
Vol 10 (5) ◽  
pp. 348
Author(s):  
Zhenbo Du ◽  
Bingbo Gao ◽  
Cong Ou ◽  
Zhenrong Du ◽  
Jianyu Yang ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Matter ◽  
Soil Erosion ◽  
Soil Type ◽  
Northeast China ◽  
Black Soil ◽  
Factors Affecting ◽  
Soil Zone ◽  
Rainfed Farming ◽  
Study Results

Black soil is fertile, abundant with organic matter (OM) and is exceptional for farming. The black soil zone in northeast China is the third-largest black soil zone globally and produces a quarter of China’s commodity grain. However, the soil organic matter (SOM) in this zone is declining, and the quality of cultivated land is falling off rapidly due to overexploitation and unsustainable management practices. To help develop an integrated protection strategy for black soil, this study aimed to identify the primary factors contributing to SOM degradation. The geographic detector, which can detect both linear and nonlinear relationships and the interactions based on spatial heterogeneous patterns, was used to quantitatively analyze the natural and anthropogenic factors affecting SOM concentration in northeast China. In descending order, the nine factors affecting SOM are temperature, gross domestic product (GDP), elevation, population, soil type, precipitation, soil erosion, land use, and geomorphology. The influence of all factors is significant, and the interaction of any two factors enhances their impact. The SOM concentration decreases with increased temperature, population, soil erosion, elevation and terrain undulation. SOM rises with increased precipitation, initially decreases with increasing GDP but then increases, and varies by soil type and land use. Conclusions about detailed impacts are presented in this paper. For example, wind erosion has a more significant effect than water erosion, and irrigated land has a lower SOM content than dry land. Based on the study results, protection measures, including conservation tillage, farmland shelterbelts, cross-slope ridges, terraces, and rainfed farming are recommended. The conversion of high-quality farmland to non-farm uses should be prohibited.

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