[1]WANG Xueyan,ZHANG Zhuodong,LUO Mengting,et al.Spatial Variability of Root Biomass at Slope Scale in Bashang Region of Hebei Province[J].Research of Soil and Water Conservation,2015,22(06):72-77,82.
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Spatial Variability of Root Biomass at Slope Scale in Bashang Region of Hebei Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 06
Page number:
72-77,82
Column:
Public date:
2015-12-28
- Title:
- Spatial Variability of Root Biomass at Slope Scale in Bashang Region of Hebei Province
- Keywords:
- root biomass; spatial variability; slope scale; topography; Bashang region; soil and water conservation
- CLC:
- Q944.54
- DOI:
- -
- Abstract:
- Bashang area in Hebei Province is a vital region with the function of protecting the ecological environment of Beijing and Tianjin. Root density distribution characteristics, whether horizontal, vertical, or depth, are important factors on preventing erosion in this area. The objective of the research is to produce a model of the slope that reflects these characteristics, continuing to develop the research on the relationship between root weight distribution and different slope shapes, i.e concave, sub-concave, sub-convex and convex. Using the samples collected by a root drill, the raster interpolation function of ArcGIS was utilized to produce a model in layers of 2D images. Besides, the exponent regression function of the program SPSS was utilized to analyze the root distribution in the vertical direction. The results show that, for horizontal layers, the majority of the root is on the edge of the slope, especially in the concave and the convex positions. The foot of the slope is also place where the roots congregate. As for the depth data, the root weight decreases following the exponential rate which shows the high capacity of concave area including gutter area and low capacity of convex area including calcic horizon to keep the moisture. Topography is an essential factor on root biomass distribution at slope scale.
- References:
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