SPATIAL VARIABILITY OF SOIL PHYSICAL PROPERTIES IN A REGION OF THE LOESS PLATEAU OF PR CHINA SUBJECT TO WIND AND WATER EROSION

2011 ◽  
Vol 24 (3) ◽  
pp. 296-304 ◽  
Author(s):  
Y. Q. Wang ◽  
M. A. Shao
2018 ◽  
Vol 19 (2) ◽  
pp. 716-728 ◽  
Author(s):  
Chaojun Gu ◽  
Xingmin Mu ◽  
Peng Gao ◽  
Guangju Zhao ◽  
Wenyi Sun ◽  
...  

Geoderma ◽  
2019 ◽  
Vol 352 ◽  
pp. 104-115 ◽  
Author(s):  
Qiankun Guo ◽  
Congcong Cheng ◽  
Hongtao Jiang ◽  
Baoyuan Liu ◽  
Yousheng Wang

2009 ◽  
Vol 44 (2) ◽  
pp. 189-196 ◽  
Author(s):  
Dong Li She ◽  
Ming An Shao ◽  
Luis Carlos Timm ◽  
Klaus Reichardt

The objective of this work was to investigate the relationship between changes in the plant community and changes in soil physical properties and water availability, during a succession from alfalfa (Medicago sativa L.) to natural vegetation on the Loess Plateau, China. Data from a succession sere spanning 32 years were collated, and vegetative indexes were compared to changes related to soil bulk density and soil water storage. The alfalfa yield increased for approximately 7 years, then it declined and the alfalfa was replaced by a natural community dominated by Stipa bungeana that began to thrive about 10 years after alfalfa seeding. Soil bulk density increased over time, but the deterioration of the alfalfa was mainly ascribed to a severe reduction in soil water storage, which was lowest around the time when degradation commenced. The results indicated that water consumption by alfalfa could be reduced by reducing plant density. The analysis of the data also suggested that soil water recharge could be facilitated by rotating the alfalfa with other crops, natural vegetation, or bare soil.


Soil Research ◽  
2008 ◽  
Vol 46 (8) ◽  
pp. 652 ◽  
Author(s):  
Yuhua Bai ◽  
Fu Chen ◽  
Hongwen Li ◽  
Hao Chen ◽  
Jin He ◽  
...  

Controlled traffic zero and minimum tillage management with residue cover has been proposed as a solution to erosion and other soil degradation challenges to the sustainability of dryland farming on the Loess Plateau of China. This was assessed between 1998 and 2007 in a field experiment involving a conventional tillage treatment, and 2 controlled traffic treatments, no tillage and shallow tillage, with full straw cover in both cases. This paper reports the soil physical properties after 9 years of dryland wheat production under these treatments, and the substantial improvements seen in soils under controlled traffic. Compared with conventional tillage, controlled traffic significantly reduced soil bulk density in the 0–0.15 m soil layer, and increased total porosity in the 0–0.60 m soil layer, where macroporosity (>60 µm) and mesoporosity (0.2–60 µm) increased at the expense of microporosity (<0.2 µm). Readily available water content and saturated hydraulic conductivity were greater in controlled traffic treatments. Controlled traffic farming appears to be an improvement on current farming systems on the Loess Plateau, and valuable for the sustainable development agriculture in this region.


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