Assessment and mapping of desertification sensitivity with MEDALUS model and GIS – Case study: basin of Hodna, Algeria

Boudjemline, Fouzia; Semar, Ahcène

doi:10.2478/jwld-2018-0002

Cited by 41 publications

(11 citation statements)

References 4 publications

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“…The Environmental Sensitivity Assessment (ESA) methodology [79], in particular, concerns the assessment of desertification risk on the basis of selected indicators of climate, soil, vegetation and land management at lower levels (landscape/watershed, regional, national). It is continuously being used widely up to the present [90][91][92][93][94][95][96] and it has been refined through the application of Remote Sensing and GIS techniques [97][98][99][100].…”

Section: Problem Description and Analysis; Specification Of Planning mentioning

confidence: 99%

Combating Land Degradation and Desertification: The Land-Use Planning Quandary

Briassoulis

2019

Land

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Land-use planning (LUP), an instrument of land governance, is often employed to protect land and humans against natural and human-induced hazards, strengthen the resilience of land systems, and secure their sustainability. The United Nations Convention to Combat Desertification (UNCCD) underlines the critical role of appropriate local action to address the global threat of land degradation and desertification (LDD) and calls for the use of local and regional LUP to combat LDD and achieve land degradation neutrality. The paper explores the challenges of putting this call into practice. After presenting desertification and the pertinent institutional context, the paper examines whether and how LDD concerns enter the stages of the LUP process and the issues arising at each stage. LDD problem complexity, the prevailing mode of governance, and the planning style endorsed, combined with LDD awareness, knowledge and perception, value priorities, geographic particularities and historical circumstances, underlie the main challenges confronting LUP; namely, adequate representation of LDD at each stage of LUP, conflict resolution between LDD-related and development goals, need for cooperation, collaboration and coordination of numerous and diverse actors, sectors, institutions and policy domains from multiple spatial/organizational levels and uncertainty regarding present and future environmental and socio-economic change. In order to realize the integrative potential of LUP and foster its effectiveness in combating LDD at the local and regional levels, the provision of an enabling, higher-level institutional environment should be prioritized to support phrοnetic-strategic integrated LUP at lower levels, which future research should explore theoretically, methodologically and empirically.

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Section: Problem Description and Analysis; Specification Of Planning mentioning

confidence: 99%

Combating Land Degradation and Desertification: The Land-Use Planning Quandary

Briassoulis

2019

Land

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“…In Lebanon, the method was applied in an arid region by adding certain parameters (i.e., rock hardness, permeability, soil organic matter, clogging, and erodibility) and excluding others (i.e., texture parent material and soil depth) [18]. The method has also been applied in Mediterranean African countries, such as Algeria [19]. In Morocco, the approach was applied in the arid regions of the Sous Massa River Basin to propose an action plan of potential interventions to mitigate the desertification problems in this region [20] and in Oued El Maleh, central Morocco [21].…”

Section: Introductionmentioning

confidence: 99%

Desertification Sensitivity Analysis Using MEDALUS Model and GIS: A Case Study of the Oases of Middle Draa Valley, Morocco

Lamqadem

Pradhan

Saber

et al. 2018

Sensors

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Oases can play a significant role in the sustainable economic development of arid and Saharan regions. The aim of this study was to map the desertification-sensitive areas in the Middle Draa Valley (MDV), which is in the southeast of Morocco. A total of 13 indices that affect desertification processes were identified and analyzed using a geographic information system. The Mediterranean desertification and land use approach; which has been widely used in the Mediterranean regions due to its simplicity; flexibility and rapid implementation strategy; was applied. All the indices were grouped into four main quality indices; i.e., soil quality; climate quality; vegetation quality and management quality indices. Each quality index was constructed by the combination of several sub-indicators. In turn; the geometric mean of the four quality index maps was used to construct a map of desertification-sensitive areas; which were classified into four classes (i.e., low; moderate; high and very high sensitivity). Results indicated that only 16.63% of the sites in the study were classified as least sensitive to desertification; and 50.34% were classified as highly and very highly sensitive areas. Findings also showed that climate and human pressure factors are the most important indicators affecting desertification sensitivity in the MDV. The framework used in this research provides suitable results and can be easily implemented in similar oasis arid areas.

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“…km or about 75.53% of the total study area. In addition, the climate-quality assessment is similar to the past work of Boudjemline and Semar (2018) who applied the annual precipitation, aridity, field orientation factors for climate-quality index assessment and all factors had high-level effects on the desertification risk the mostly area of the basin of Hodna in Algeria (61.87%). Figure 8.…”

Section: Climate Quality Index Assessment and Its Severitymentioning

confidence: 82%

Desertification Assessment Using Medalus Model in Upper Lamchiengkrai Watershed, Thailand

Plaiklang

Sutthivanich

Sritarapipat

et al. 2020

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. Desertification is a global environmental problem. It affects harmful on economic, social and environmental that ultimately effects on quality of human life. Thailand is the 174th member of the UNCCD, according to the Thailand report of desertification by LDD (2004). It was found that the area of degraded land or desertification land in Thailand was 33.57 million hectares which were agricultural soil problem. Soil erosion and soil salinity are major problems for agricultural soil in Thailand. Thus, to prevent and fix such problems, assessment and evaluation of soil properties are essential. Lamchiengkrai watershed in Nakhon Ratchasima province presents soil salinity exposure area which is a major problem in the Northeast region of Thailand. This study aims to access a new approach for assessing the extent and the risk of desertification land by MEDALUS model based on geoinformatics technology in upper Lamchiengkrai watershed, Nakhon Ratchasima province. MEDALUS model is the factors of desertification assessment. Four groups of factors were examined, including vegetation (fire risk, erosion protection, and drought resistance), climatic (rainfall and rainfall erosivity), soil (soil texture, electrical conductivity, organic matter, soil depth, drainage, and slope), and human activity factor (land use and soil erosion). The results of the study indicated that 67.25% of the area was classified as high risk, 30.54% was classified as moderate risk and 2.22% was classified as low risk to desertification land. In addition, the factors affected on the high-risk area were climate and vegetation factors. Moderate risk area was influenced by the human activity factor and soil factors.

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Assessment and mapping of desertification sensitivity with MEDALUS model and GIS – Case study: basin of Hodna, Algeria

Cited by 41 publications

References 4 publications

Combating Land Degradation and Desertification: The Land-Use Planning Quandary

Combating Land Degradation and Desertification: The Land-Use Planning Quandary

Desertification Sensitivity Analysis Using MEDALUS Model and GIS: A Case Study of the Oases of Middle Draa Valley, Morocco

Desertification Assessment Using Medalus Model in Upper Lamchiengkrai Watershed, Thailand

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