Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.jafrearsci.2018.07.003 |
Development of an empiric model of estimation of the environmental risk of soil physical degradation in the context of climate change application in the Mejerda valley, Tunisia | |
Riahi, R.1; Hatira, A.1; Baccouche, S.2; Nakouri, A.3 | |
通讯作者 | Riahi, R. |
来源期刊 | JOURNAL OF AFRICAN EARTH SCIENCES |
ISSN | 1464-343X |
EISSN | 1879-1956 |
出版年 | 2018 |
卷号 | 147页码:498-510 |
英文摘要 | Land degradation is a serious environmental problem. Soil physical degradation is the consequence of several factors including topographic, edaphic and agronomic characteristics as well as climatic factors. Soil quality assessment is of main interest. Therfore an empirical model was developed to estimate the environmental risk of soil physical degradation in the context of climate change within homogeneous hydrological units of a middle valley Mejerda watershed and to study the interaction between climate change and soil degradation risk. This approach is based on the usual formula expressing the environmental risk and the usual matrix operation for data processing. Six scenarios for different return periods are simulated in order to study the interactive changes between climatic hazards and soil vulnerability in each unit. Three risk degradation classes are distinguished based on the result of the elaborated model (Risk, Vulnerability, and Hazards). Units in low slopes and cultivated with olive trees have low risk (3, 58 x 104 < risk < 14, 54 x 104), while units in average slope and cultivated with cereal have a medium risk (5,09 x 104 < risk < 18,23 x 104). However, high slope units (slope > 33%) are the riskiest ones (6, 36 x 104 < risk < 21,94 x 104). Soil degradation risk is assumed to be proportional to vulnerability matrices that depend on topographic, edaphic and agronomic characteristics and climatic hazard matrices which depend on rain characteristics. The elaborated model seems to be applicable to other watersheds of Tunisia, constituting a tool for soil conservation planning and structural management. |
英文关键词 | Climate change Vulnerability Degradation Risk Hazard |
类型 | Article |
语种 | 英语 |
国家 | Tunisia |
收录类别 | SCI-E |
WOS记录号 | WOS:000447096300038 |
WOS关键词 | GLOBAL SENSITIVITY-ANALYSIS ; LAND-USE CHANGE ; WATER EROSION ; QUALITY ; FOREST ; DESERTIFICATION ; INDICATORS ; VEGETATION ; INDEXES ; IMPACT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/210415 |
作者单位 | 1.Univ Tunis El Manar, Fac Sci Tunis, Res Unit Pedol, Tunis, Tunisia; 2.Rural Equipment Engn Sch, Medjez El Bab, Tunisia; 3.Univ Tunis El Manor, Fac Sci Tunis, Dept Math, Tunis, Tunisia |
推荐引用方式 GB/T 7714 | Riahi, R.,Hatira, A.,Baccouche, S.,et al. Development of an empiric model of estimation of the environmental risk of soil physical degradation in the context of climate change application in the Mejerda valley, Tunisia[J],2018,147:498-510. |
APA | Riahi, R.,Hatira, A.,Baccouche, S.,&Nakouri, A..(2018).Development of an empiric model of estimation of the environmental risk of soil physical degradation in the context of climate change application in the Mejerda valley, Tunisia.JOURNAL OF AFRICAN EARTH SCIENCES,147,498-510. |
MLA | Riahi, R.,et al."Development of an empiric model of estimation of the environmental risk of soil physical degradation in the context of climate change application in the Mejerda valley, Tunisia".JOURNAL OF AFRICAN EARTH SCIENCES 147(2018):498-510. |
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