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פותח על ידי קלירמאש פתרונות בע"מ -
Livestock grazing impact on soil wettability and erosion risk in post-fire agricultural lands
Year:
2016
Source of publication :
Science of the Total Environment
Authors :
ברקאי, דניאל
;
.
צעדי, אלי
;
.
קנול, יעקב
;
.
Volume :
573
Co-Authors:
Stavi, I., Dead Sea and Arava Science Center, Yotvata, Israel
Barkai, D., Department of Natural Resources, Agricultural Research Organization, Gilat Research Center, Negev, Israel
Knoll, Y.M., Department of Natural Resources, Agricultural Research Organization, Gilat Research Center, Negev, Israel
Zaady, E., Department of Natural Resources, Agricultural Research Organization, Gilat Research Center, Negev, Israel
Facilitators :
From page:
1203
To page:
1208
(
Total pages:
6
)
Abstract:
Fires in agricultural areas are common, modifying the functioning of agro-ecosystems. Such fires have been extensively studied, and reported to considerably affect soil properties. Yet, understanding of the impact of livestock grazing, or more precisely, trampling, in fire-affected lands is limited. The objective of this study was to assess the impact of low- to moderate-fire severity and livestock trampling (hoof action) on the solid soil's wettability and related properties, and on soil detachment, in burnt vs. non-burnt croplands. The study was implemented by allowing livestock to access plots under high, medium, and low stocking rates in (unintentionally) burnt and non-burnt lands. Also, livestock exclusion plots were assigned as a control treatment. Results showed that fire slightly decreased the soil wettability. At the same time, water drop penetration time (WDPT) was negatively related to the stocking rate, and critical surface tension (CST) was ~ 13% smaller in the control plots than in the livestock-presence treatments. Also, the results showed that following burning, the resistance of soil to shear decreased by ~ 70%. Mass of detached material was similar in the control plots of the burnt and non-burnt plots. At the same time, it was three-, eight-, and nine-fold greater in the plots of the burnt × low, burnt × medium, and burnt × high stocking rates, respectively, than in the corresponding non-burnt ones. This study shows that livestock trampling in low- to moderate-intensity fire-affected lands increased the shearing of the ground surface layer. On the one hand, this slightly increased soil wettability. On the other hand, this impact considerably increased risks of soil erosion and land degradation. © 2016 Elsevier B.V.
Note:
Related Files :
Agriculture
Ecology
ecosystems
Israel
mixed farming
Negev
soil degradation
soil erosion
wind erosion
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.scitotenv.2016.03.126
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
31725
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:04
Scientific Publication
Livestock grazing impact on soil wettability and erosion risk in post-fire agricultural lands
573
Stavi, I., Dead Sea and Arava Science Center, Yotvata, Israel
Barkai, D., Department of Natural Resources, Agricultural Research Organization, Gilat Research Center, Negev, Israel
Knoll, Y.M., Department of Natural Resources, Agricultural Research Organization, Gilat Research Center, Negev, Israel
Zaady, E., Department of Natural Resources, Agricultural Research Organization, Gilat Research Center, Negev, Israel
Livestock grazing impact on soil wettability and erosion risk in post-fire agricultural lands
Fires in agricultural areas are common, modifying the functioning of agro-ecosystems. Such fires have been extensively studied, and reported to considerably affect soil properties. Yet, understanding of the impact of livestock grazing, or more precisely, trampling, in fire-affected lands is limited. The objective of this study was to assess the impact of low- to moderate-fire severity and livestock trampling (hoof action) on the solid soil's wettability and related properties, and on soil detachment, in burnt vs. non-burnt croplands. The study was implemented by allowing livestock to access plots under high, medium, and low stocking rates in (unintentionally) burnt and non-burnt lands. Also, livestock exclusion plots were assigned as a control treatment. Results showed that fire slightly decreased the soil wettability. At the same time, water drop penetration time (WDPT) was negatively related to the stocking rate, and critical surface tension (CST) was ~ 13% smaller in the control plots than in the livestock-presence treatments. Also, the results showed that following burning, the resistance of soil to shear decreased by ~ 70%. Mass of detached material was similar in the control plots of the burnt and non-burnt plots. At the same time, it was three-, eight-, and nine-fold greater in the plots of the burnt × low, burnt × medium, and burnt × high stocking rates, respectively, than in the corresponding non-burnt ones. This study shows that livestock trampling in low- to moderate-intensity fire-affected lands increased the shearing of the ground surface layer. On the one hand, this slightly increased soil wettability. On the other hand, this impact considerably increased risks of soil erosion and land degradation. © 2016 Elsevier B.V.
Scientific Publication
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