Influence of different nitrogen forms application on rice photosynthesis: fluorescence with water-saving irrigation in black soil region of Songnen Plain, Northeast China

2018 ◽  
Vol 16 (4) ◽  
pp. 795-804 ◽  
Author(s):  
Zheng Ennan ◽  
Yang Hua ◽  
Zhang Zhongxue
Keyword(s):  
Northeast China ◽  
Black Soil ◽  
Water Saving ◽  
Songnen Plain ◽  
Nitrogen Forms ◽  
Black Soil Region

Chronic effects of different fertilization regimes on nirS-type denitrifier communities across the black soil region of Northeast China

Pedosphere ◽  
2020 ◽  
Vol 30 (1) ◽  
pp. 73-86 ◽  
Author(s):  
Xiaojing HU ◽  
Junjie LIU ◽  
Dan WEI ◽  
Ping ZHU ◽  
Xi'an CUI ◽  
...  
Keyword(s):  
Northeast China ◽  
Black Soil ◽  
Chronic Effects ◽  
Black Soil Region ◽  
Denitrifier Communities

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.

Identification of sediment sources and exploration of scale effects in the black soil region of Northeast China

CATENA ◽  
2020 ◽  
Vol 195 ◽  
pp. 104848
Author(s):  
Donghao Huang ◽  
Mingze Pei ◽  
Lili Zhou ◽  
Haoming Fan ◽  
Yanfeng Jia
Keyword(s):  
Northeast China ◽  
Scale Effects ◽  
Black Soil ◽  
Sediment Sources ◽  
Black Soil Region

Field capacity in black soil region, Northeast China

2010 ◽  
Vol 20 (5) ◽  
pp. 406-413 ◽  
Author(s):  
Xingwu Duan ◽  
Yun Xie ◽  
Gang Liu ◽  
Xiaofei Gao ◽  
Hongmei Lu
Keyword(s):  
Northeast China ◽  
Field Capacity ◽  
Black Soil ◽  
Black Soil Region

Study on the Method of Soil Productivity Assessment in Black Soil Region of Northeast China

2009 ◽  
Vol 8 (4) ◽  
pp. 472-481 ◽  
Author(s):  
Xing-wu DUAN ◽  
Yun XIE ◽  
Yan-jie FENG ◽  
Shui-qing YIN
Keyword(s):  
Northeast China ◽  
Black Soil ◽  
Soil Productivity ◽  
Black Soil Region ◽  
Productivity Assessment

May agricultural terraces induce gully erosion? A case study from the Black Soil Region of Northeast China

2021 ◽  
Vol 750 ◽  
pp. 141715
Author(s):  
Yanru Wen ◽  
Till Kasielke ◽  
Hao Li ◽  
Bin Zhang ◽  
Harald Zepp
Keyword(s):  
Northeast China ◽  
Black Soil ◽  
Gully Erosion ◽  
Agricultural Terraces ◽  
Black Soil Region

Soil physical and hydraulic properties under different land uses in the black soil region of Northeast China

2019 ◽  
Vol 99 (4) ◽  
pp. 406-419 ◽  
Author(s):  
Haiqiang Li ◽  
Xiaolin Liao ◽  
Hansong Zhu ◽  
Xiaorong Wei ◽  
Mingan Shao
Keyword(s):  
Land Use ◽  
Northeast China ◽  
Hydraulic Properties ◽  
Agricultural Land ◽  
Soil Depth ◽  
Black Soil ◽  
Water Retention Curve ◽  
Land Uses ◽  
Undisturbed Soil ◽  
Black Soil Region

Black soil is inherently productive and fertile but is subject to soil erosion. Understanding the distribution of soil physical and hydraulic properties of the soil profile under various land uses would help reveal the mechanism behind the degradation of black soil. In this study, we investigated the variation in soil physical and hydraulic properties with land uses and soil depths in the black soil area of Northeast China. Disturbed samples and undisturbed soil cores were collected from 0–100 cm soil depths under agricultural land (AL), forestland (FL), and shrub land (SL). Our results showed that the land use and soil depth significantly affected the soil bulk density (BD), field capacity (FC), capillary moisture capacity (CMC), saturated hydraulic conductivity (Ks), and soil water retention curve (θs and α). Small macroaggregates accounted for most of the soil mass and were significantly higher in FL but lower in AL for the 0–50 cm of the soil samples. The FC, CMC, and Ks decreased, but the BD increased with the soil depth across the three land-use types. In addition, the soil in AL had a higher BD but lower CMC and Ks than the soil in FL and SL for most soil depths. These results indicated that land use can influence the variation in soil physical and hydraulic properties within the 0–100 cm soil depth, and agricultural use is a major reason for soil degradation in this black soil region.

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