Spatial distribution of soil erosion in a black soil region of Northeast China studied using remote sensing and GIS techniques

2010 ◽  
Author(s):  
Yibo Liu ◽  
Qingrui Chang ◽  
Jing Liu ◽  
Weimin Ju ◽  
Gaolong Zhu ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Spatial Distribution ◽  
Soil Erosion ◽  
Northeast China ◽  
Black Soil ◽  
Remote Sensing And Gis ◽  
Gis Techniques ◽  
Black Soil Region

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
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