Soil‐texture affects the influence of termite macropores on soil water infiltration in a semi‐arid savanna

Ecohydrology ◽  
2020 ◽  
Vol 13 (8) ◽  
Author(s):  
Arnim Marquart ◽  
Lars Goldbach ◽  
Niels Blaum
Keyword(s):  
Soil Water ◽  
Soil Texture ◽  
Water Infiltration ◽  
Soil Water Infiltration ◽  
Semi Arid

scholarly journals Effects of rock fragments on the water infiltration and hydraulic conductivity in the soils of the desert steppes of Inner Mongolia, China

2021 ◽  
Author(s):  
Xiaolong Wu ◽  
Zhongju Meng ◽  
Xiaohong Dang ◽  
Ji Wang
Keyword(s):  
Soil Water ◽  
Water Infiltration ◽  
Rock Fragment ◽  
Rock Fragments ◽  
Infiltration Rates ◽  
Soil Water Infiltration ◽  
Desert Steppes ◽  
Semi Arid ◽  
Infiltration Processes ◽  
Rock Fragment Content

Soils that contain rock fragments (particles &gt; 2 mm in diameter) are distributed all over the world. The presence of these small rock fragments can have a great impact on soil water retention properties, as well as on the soil-water infiltration and vegetation restoration in semi-arid regions. To quantitatively describe the transport of water in stony soils, repacked soil cores were used to determine the infiltration rates for different rock fragment contents (0%, 10%, 20%, 30%, and 40%) and rock fragment sizes (2–5, 5–8, 8–11, and 2–11 mm). The results showed that both the content and size of the rock fragments and their interaction significantly affected the infiltration process. The infiltration rates over time and the saturated hydraulic conductivity (K<sub>s</sub>) decreased with an increasing rock fragment content to an observed minimum value for a 40% rock fragment content. The soil-water infiltration processes were accurately described by the Kostiakov model. The measured and calculated K<sub>s</sub> values decreased with an increasing rock fragment content, which was in accordance with the published data and in accordance with the K<sub>s</sub> obtained by five empirical methods. The variations in the measured K<sub>s</sub> were likely due to the variations in the soil properties caused by the soil sample repacking. The results of this study may improve the understanding of the effects of the rock fragment content and size on the infiltration processes in arid and semi-arid desert steppes.

Comparative study of the impact of two mechanical perforation densities on the behavior of a sandy soil

2012 ◽  
Vol 8 (1) ◽  
pp. 37-48
Author(s):  
S. Chehaibi ◽  
K. Abrougui ◽  
F. Haouala
Keyword(s):  
Soil Water ◽  
Sandy Soil ◽  
Water Infiltration ◽  
Cone Penetration ◽  
Initial State ◽  
Soil Water Infiltration ◽  
Good Improvement ◽  
The Impact ◽  
Positive Effect ◽  
Resistance To Penetration

The effects of mechanical perforation densities by extracting soil cores through an aerator Vertidrain with a working width of 1.6 m and equipped with hollow tines spaced of 65 mm, were studied on a sandy soil of a grassy sward in the Golf Course El Kantaoui in Sousse (Tunisia). The mechanical aeration was performed at two densities: 250 and 350 holes/m2. The cone penetration resistance and soil water infiltration were measured. These parameters were performed at initial state before aeration (E0) and then on the 10th, 20th and 30th day after aeration. These results showed that perforation density of 350 holes/m2 had a positive effect on the soil by reducing its cone resistance to penetration compared to the initial state (Rp = 14.8 daN/cm2). At 5 cm depth the decrease in resistance to penetration was 34% and 43% on the 10th and 20th day after aeration, respectively. However, on the 30th day after aeration the soil resistance to penetration tended to grow and its value compared to the initial state decreased only by 21 and 26%, respectively, at 5 and 15 cm of depth only by 10% and 9% with 250 holes/m2 density. The soil water infiltration made a good improvement after aeration compared to the initial state. This parameter increased from 4.8 cm/h to 8.3, 10.9 and 13.1 cm/h with 250 holes/m2 density and to 10, 12.9 and 14.8 cm/h with 350 holes/m2 density on the 10th, 20th and 30th day following the aeration.

Effects of White Grubs on Soil Water Infiltration

2015 ◽  
Vol 44 (2) ◽  
pp. 134-139 ◽  
Author(s):  
A A Romero-López ◽  
E Rodríguez-Palacios ◽  
E Alarcón-Gutiérrez ◽  
D Geissert ◽  
I Barois
Keyword(s):  
Soil Water ◽  
Water Infiltration ◽  
White Grubs ◽  
Soil Water Infiltration

Observation and modeling on irregular purple soil water infiltration process

2017 ◽  
Vol 14 (6) ◽  
pp. 1076-1085 ◽  
Author(s):  
Dong-bing Cheng ◽  
Lin-yao Dong ◽  
Feng Qian ◽  
Bei Sun
Keyword(s):  
Soil Water ◽  
Water Infiltration ◽  
Purple Soil ◽  
Infiltration Process ◽  
Soil Water Infiltration

Effects of hillslope position on soil water infiltration and preferential flow in tropical forest in southwest China

2021 ◽  
Vol 299 ◽  
pp. 113672
Author(s):  
Chunfeng Chen ◽  
Xin Zou ◽  
Ashutosh Kumar Singh ◽  
Xiai Zhu ◽  
Wanjun Zhang ◽  
...  
Keyword(s):  
Tropical Forest ◽  
Soil Water ◽  
Preferential Flow ◽  
Southwest China ◽  
Water Infiltration ◽  
Soil Water Infiltration

How the particle interaction forces determine soil water infiltration: Specific ion effects

2019 ◽  
Vol 568 ◽  
pp. 492-500 ◽  
Author(s):  
Wuquan Ding ◽  
Xinmin Liu ◽  
Feinan Hu ◽  
Hualing Zhu ◽  
Yaxue Luo ◽  
...  
Keyword(s):  
Soil Water ◽  
Particle Interaction ◽  
Water Infiltration ◽  
Interaction Forces ◽  
Specific Ion Effects ◽  
Soil Water Infiltration ◽  
Ion Effects
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