We have evidence in the loess
of the Rhine of considerable changes of level in the land within a very recent geological period, and when the surface was peopled by existing land and fresh-water shells.
This study aims to rectify this omission by applying one of these models to soil water dynamics under Loess
The experimental study of fracture grouting is mainly focused on soft soil, and the research on the splitting, diffusion process, and spatial geometry of the fracture grouting in loess
is very rare.
 analyzed changes in the mean and extreme temperature and precipitation values in the Loess
Plateau between 1961 and 2011 using a gridded dataset and found out that the total amount of precipitation on wet days decreased over a large area of the Loess
Plateau, and there were only minor changes in extreme precipitation over the Loess
Soil type Thickness (m) Moisture Gravity Void content (%) (kN.m3) ratio Loess
10.4 8.5 14.1 0.96 Loess
4.8 16.5 14.9 0.89 Pebble 3.3 21 24.8 1.15 Mudstone -- -- 25.3 -- Soil type Compression Compression Bearing capacity coefficient modulus (MPa) eigenvalues (kPa) ([MPa.sup.-1]) Loess
0.21 6.2 150 Loess
0.23 7.6 180 Pebble -- -- 400 Mudstone -- -- 600
At present, the study of permittivity of unsaturated loess
is few, and the direct measurement of the permittivity of unsaturated loess
by GPR has little result in this field.
The buried depth of groundwater in the loess
ridge and hilly area is generally greater than 15 m.
Quaternary deposits are represented mainly by Pleistocene river terraces, loess
and related sediments, Pleistocene to Holocene peat-bog and swamp sediments, Pleistocene to Holocene slope sediments, Late Glacial to Early Holocene cemented talus sediments and Holocene tufa.
For example,  employs an STL method to decompose the main trend based on Loess
, while  applies a piecewise approximation method to extract the underlying long-term trend.
 used this method to analyze the infiltration characteristic of loess
. Guided by the idea of integrating the above two methods of determining the unsaturated infiltration coefficient, this study conducted a horizontal one-dimensional (1D) seepage test to measure the diffusion coefficient and used SWCCs of remolded loess
of different dry densities to modify the Mualem model.
is one kind of typical structural soil and is with an area of 630,000 [km.sup.2] which comprises 6.6% of Chinese territory .
This study showed that biochar application could be used as the soil amendment in the Loess
Plateau to weaken the restriction of water shortage and promote plant growth.