Problem Of Desertification Research Articles

Environmental and climate changes and their effects on the agricultural sector in Iraq

Purpose: The objective of this study was to aims to highlight the economic impacts of environmental and climate changes on both developed and developing countries, with a specific focus on Iraq's agricultural sector Theoretical framework: The research dealt with environmental and climate changes and their effects on the agricultural sector in Iraq. The research problem revolves around the economic challenges facing Iraq, which revolve around the challenges of environmental and climate change, which exacerbate the problem of desertification, drought, and lack of water resources. Design/methodology/approach: The researcher adopted the deductive approach and the analytical descriptive approach to study environmental and climate changes as experiences for selected countries in order to reach analyzes and conclusions related to them. The period (2004-2022) was chosen because this period witnessed confrontation with environmental and climate changes and the worsening of carbon emissions, global warming, desertification, and drought in Many countries of the world, including Iraq. Findings: Environmental and climatic changes have a direct impact on the agricultural sector in Iraq, particularly amidst the challenges facing the global economy and food security. These changes pose an increasing threat to agricultural sectors worldwide, including in developing and Arab countries. Research, Practical & Social implications: We propose a future research agenda and highlight environmental and climate changes and their impacts on the agricultural sector in Iraq. Originality/value: The results indicate that the number of publications that addressed the impacts of environmental and climate change and their impacts on the agricultural sector.

Problems of Desertification and Dustiness of Atmospheric Air in Arid Cities of the Aral Sea Region

Problems of Desertification and Dustiness of Atmospheric Air in Arid Cities of the Aral Sea Region

Spatial-Temporal Process of Land Use/Land Cover and Desertification in the Circum-Tarim Basin during 1990–2020

The problem of desertification in the Tarim Basin, an area with a unique geography and climatic conditions, has received extensive research attention not only in China but also around the world. Between natural factors and human activities, the latter are considered the main cause of desertification, with the excessive use of land resources accelerating its risk. This study classified the degree of desertification into five types, no, light, moderate, severe, and extremely severe desertification, and focused on the spatio-temporal changes in LULC, desertification development, and their relationship in the Circum-Tarim Basin during the period of 1990–2020, and the results indicated the following. (1) Over the 30-year study period, farmland development was frequent in the basin. The total farmland area increased significantly by 1.40 × 104 km2, which resulted from the occupation of grassland (mainly low-covered and medium-covered grassland) and unused land (mainly saline–alkali land). (2) There was a general alleviation of the effects of desertification, but also local deterioration. The area of no-desertification land has significantly increased (an increase of 2.10 × 104 km2), and the degree of desertification has shifted significantly to adjacent lighter degrees, but the area of extremely severe desertification in certain regions has increased (an increase of 7.89 × 104 km2). (3) There was an inseparable relationship between LULC and desertification. Oasisization and desertification were two processes that interacted and were interrelated. There was an approximately 54.42% increase in no-desertification land area mainly occurring in the region where LULC types changed (Region II), although this area only accounted for 9.71% of the total area of the basin. There was an approximately 98.28% increase in the area of extremely severe desertification occurring where there were no changes in LULC types (Region I). Region II demonstrated the best effects of desertification prevention and control in the 30-year study period in the Circum-Tarim Basin. Land development and oasis expansion have led to concentrated water use, resulting in water scarcity in certain areas, which cannot support the needs of vegetation growth, thus aggravating the degradation. Hence, “adapting measures to local conditions, rational planning, zoning policies, precise prevention and control” will be the way forward for desertification control in the future in the Circum-Tarim Basin.

Transforming desertification patterns in Asia: Evaluating trends, drivers, and climate change impacts from 1990 to 2022

Owing to the combined effects of climate change and human activities, the type of desertification in the arid regions of Asia has undergone profound changes, and the problem of desertification has become increasingly prominent. To help address this problem, this study clarifies the transformation trends and characteristics of desertification types across Asia and discusses key areas for desertification prevention and control. Based on a series of Landsat satellite images, combined with the classification method of the desertification degree and a machine learning model, the desertification types, trends, and conversion degrees in the arid regions of Asia were systematically evaluated. In addition, the impact mechanism of climate change on the conversion between desertification types was evaluated. The primary results were as follows: (1) Various desertification types in the arid areas of Asia from 1990 to 2022 exhibited evident time series characteristics. Extremely severe desertification expanded from 1990 to 2009 and subsequently shrunk; (2) The degree of desertification in the arid regions of Asia exhibited different change characteristics in different periods, and the converted area of the same conversion type was different in different periods; (3) Different desertification conversion types in different periods have different drivers; however, overall, soil moisture has the greatest contribution to desertification conversion type. These results provide a scientific reference for the formulation of reasonable desertification prevention and control policies.

Climate change and geo-environmental factors influencing desertification: a critical review.

The problem of desertification (DSF) is one of the most severe environmental disasters which influence the overall condition of the environment. In Rio de Janeiro Earth Summit on Environment and Development (1922), DSF is defined as arid, semi-arid, and dry sub-humid induced LD and that is adopted at the UNEP's Nairobi ad hoc meeting in 1977. It has been seen that there is no variability in the trend of long-term rainfall, but the change has been found in the variability of temperature (avg. temp. 0-5°C). There is no proof that the air pollution brought on by CO2 and other warming gases is the cause of this rise, which seems to be partially caused by urbanization. The two types of driving factors in DSF-CC (climate change) along with anthropogenic influences-must be compared in order to work and take action to stop DSF from spreading. The proportional contributions of human activity and CC to DSF have been extensively evaluated in this work from "qualitative, semi-quantitative, and quantitative" perspectives. In this study, we have tried to connect the drives of desertification to desertification-induced migration due to loss of biodiversity and agriculture failure. The authors discovered that several of the issues from the earlier studies persisted. The policy-makers should follow the proper SLM (soil and land management) through using the land. The afforestation with social forestry and consciousness among the people can reduce the spreading of the desertification (Badapalli et al. 2023). The green wall is also playing an important role to reduce the desertification. For instance, it was clear that assessments were subjective; they could not be readily replicated, and they always relied on administrative areas rather than being taken and displayed in a continuous space. This research is trying to fulfill the mentioned research gap with the help of the existing literatures related to this field.

Evolution and Optimization of an Ecological Network in an Arid Region Based on MSPA-MCR: A Case Study of the Hexi Corridor

Under the background of climate change, the problems of water resource allocation and desertification in arid areas are becoming increasingly prominent, which seriously threatens the sustainable development of society. Constructing an ecological network is an important measure to improve the ecological environment and maintain ecological service function. This study takes the Hexi Corridor as an example and relies on land use data from 2000 to 2020, and comprehensively applies methods, such as morphological spatial pattern analysis (MSPA), the minimum cumulative resistance model (MCR), and the network evaluation index to construct and optimize the ecological network of the Hexi Corridor. Our results show: (1) the spatial distribution of the landscape elements in the Hexi Corridor was not uniform and that the ecological foundation in the north was poor; (2) the resistance surface was “low in the south and high in the north”, with low-value areas mainly located to the south of Jiuquan City, Zhangye City, and Wuwei City, and the high-value areas were mainly located in the middle and to the north of Jiuquan City and Wuwei City; (3) the ecological source areas, corridors, and nodes showed a fluctuating upward trend, and they were mainly located to the southwest of Zhangye City, Jiuquan City, and Wuwei City; (4) the network closure (α), line point rate (β), and network connectivity (γ) showed a W-shaped change trend; (5) after the ecological network optimization, 22 new ecological source areas, 78 new corridors, and 61 new nodes were added, as a result, the α, β, and γ indices all increased. Our results provide a reference for ecological environment restoration research and serve as a regionally balanced means of sustainably developing the Hexi Corridor.

Development and performance evaluation of sunflower straw cellulose ether ecological sand-fixing material

Sunflowers are widely cultivated as a cash crop in the Inner Mongolia Autonomous Region, China. However, due to the lack of efficient resource utilization techniques, most of the sunflower stalks are discarded. In the Hetao irrigation area, the problem of desertification has prompted the limited use of sunflower straw to construct physical sand barriers for windbreaks and sand stabilization. In response to this, this study focuses on synthesizing a cellulose ether sand-fixing material using sunflower straw, the primary agricultural waste in Denkou County, Hetao irrigation district. This material enhances the effective adhesion between sand grains, reduces porosity among loose sand grains, and inhibits sand grain movement. The findings from this study conclusively demonstrate that the sand-fixing materials under investigation meet international standards for mechanical properties. They effectively transform loose, unconnected sand grains into a state with strong adhesion properties.

The problem of land desertification - as one of the main challenges to modern humanity

The problem of land desertification - as one of the main challenges to modern humanity

Strategic priorities for rehabilitation of desertified areas

Desertification is a global socio-ecologial - economic problem. Desertification has affected the South of Russia, including the territory of Kalmykia. The problem of desertification poses a threat to all sectors of the Republic’s economy, especially the agricultural sector.The agrarian sphere of the Republic of Kalmykia is not only agricultural production, but also engineering infrastructure, everyday life, health and income of the population. The fundamental point is that the higher the degree of land degradation, the less the socio-economic and environmental benefits accrue to the people living in the territory. Recent assessments of the Republic of Kalmykia rangeland fund indicate a rather low feed potential. The transformation of rangelands into arable land remains an unresolved problem. Among the problems of rational use of rangeland resources, the regulatory and legal failure to regulate the use of natural resources is highlighted, the current assessment of the state of soil and plant resources remains. It is impossible to carry out expert assessments of the condition without classical survey methods, absence of materials of large-scale soil and geobotanical cartographic affects on economic calculations, cadastral assessment of land and standardization of agricultural land use.

Exploring main soil drivers of vegetation succession in abandoned croplands of Minqin Oasis, China.

The Minqin Oasis, which is located in Wuwei City, Gansu Province, China, faces a very serious land desertification problem, with about 94.5% of its total area desertified. Accordingly, it is crucial to implement ecological restoration policies such as cropland abandonment in this region. In abandoned croplands, abiotic factors such as soil properties may become more important than biotic factors in driving vegetation succession. However, the connections between soil properties and vegetation succession remain unclear. To fill this knowledge gap, this study investigated these connections to explore major factors that affected vegetation succession, which is meaningful to designing management measures to restore these degraded ecosystems. This study investigated seven 1-29-year-old abandoned croplands using the "space for time" method in Minqin Oasis. Vegetation succession was classified into different stages using a canonical correlation analysis (CCA) and two-way indicator species analysis (Twinspan). The link between soil properties and vegetation succession was analyzed using CCA. The primary factors shaping community patterns of vegetation succession were chosen by the "Forward selection" in CCA. The responses of dominant species to soil properties were analyzed using generalized additive models (GAMs). Dominant species turnover occurred obviously after cropland abandonment. Vegetation succession can be classified into three stages (i.e., early, intermediate, and late successional stages) with markedly different community composition and diversity. The main drivers of vegetation succession among soil properties were soil salinity and saturated soil water content and they had led to different responses of the dominant species in early and late successional stages. During the development of vegetation succession, community composition became simpler, and species diversity decreased significantly, which was a type of regressive succession. Therefore, measures should be adopted to manage these degraded, abandoned croplands.

Consensus Building Method as a participatory tool of health decision making to counteract medical desertification in Europe.

Medical deserts can be described as isolated or depopulated areas with significant falling numbers of medical practitioners and overall health workforce shortages. The project ‘Action for Health and Equity: Addressing medical Deserts’ (AHEAD) aims to reduce health inequalities by addressing the phenomenon of medical desertification in European context. AHEAD is a consortium of partners from civil society organizations and academic institutions from five countries: Italy, Moldova, the Netherlands, Romania and Serbia. A single stakeholder cannot solve the problem of medical desertification and thus it requires a complex participatory decision making process involving a wide range of stakeholders. AHEAD developed and applied a participatory decision making methodology called consensus building, to address this challenge.
 We deployed the methodology with the aim of obtaining a general agreement among stakeholders on policy options to counteract and prevent medical deserts in local communities. Our definition of consensus does not necessarily mean that all stakeholders have to agree with each other in every aspect. We created a democratic space where stakeholders could agree to disagree and focus on coming to a consensus on policy options that are contextually relevant and feasible to implement. This methodology is rooted in the idea of equality, quality, legitimacy and acceptability where the policy options are co-created, locally relevant, have increased trust, confidence and are thus more likely to be accepted and implemented.
 Our consensus building methodology is deployed in three phases in all countries. First, we undertook the activities with homogenous stakeholders from three groups: community members, patient organizations, health providers, health worker organizations, health insurers and local decision makers. The homogenous sessions identify policy options and select representatives for multi-stakeholder sessions to come to consensus on most pressing and feasible policy options, in the second phase. Finally, the representatives of the multistakeholder session meet national level policy makers and experts to come to consensus on most important or appropriate policy options. These sessions are structured in a way to clarify issues, opening out the discussion by exploring stakeholders’ lived experiences, exploring ideas to counteract medical desertification and coming together to find common ground.
 The deployment of this methodology as a participatory decision making process helped us democratise and make the process more effective for policy making, by the involvement of a wide range of stakeholders. This methodology acted as an intervention in empowering the vulnerable groups who otherwise do not have a voice in the process. It also proved to be a win-win process for both the affected community and the policy makers. The community members get an opportunity to share their concerns and suggest the most feasible and effective policy options to counteract medical desert in their locality. Consequentially, the policy makers get valuable inputs from a wide range of stakeholders including people with lived experiences. The policy options generated through our consensus building methodology will be used to initiate a national policy dialogue in all five countries to bring policy change to counteract medical desert.

A High-Precision Remote Sensing Identification Method for Land Desertification Based on ENVINet5.

Land desertification is one of the serious ecological and environmental problems facing mankind today, which threatens the survival and development of human society. China is one of the countries with the most serious land desertification problems in the world. Therefore, it is of great theoretical value and practical significance to carry out accurate identification and monitoring of land desertification and its influencing factors in ecologically fragile areas of China. This is conducive to curbing land desertification and ensuring regional ecological security. Minqin County, Gansu Province, located in northwestern China, is one of the most serious areas of land desertification, which is also one of the four sandstorm sources in China. Based on ENVINet5, this paper constructs a high-precision land desertification identification method with an accuracy of 93.71%, which analyzes the trend and reasons of land desertification in this area, provides suggestions for disaster prevention in Minqin County. and provides a reference for other similar areas to make corresponding desertification control policies.

STORIES OF A COLLAPSING FUTURE. REPRESENTATIONS OF CLIMATE CHANGE EFFECTS IN MAJA LUNDE’S NOVELS

The article proposes an overview of two novels written by the Norwegian writer Maja Lunde, through notions such as ‘dystopia’, ‘trans-corporeality’ (Alaimo 2018) and `heterotopy’ (Foucault 1984) that showcase the presence of various beings and spaces interlinked and existing in a constantly changing environment. The History of Bees gathers three stories from separate timelines in order to emphasize the evolution of the relation between people and the environment, while The End of the Ocean tackles problems of desertification and dreadful effects of the capitalist system. Both books are essential for understanding a new type of catastrophe, which has been explained as a “catastrophe without event” (Horn 2014), due to its graduality that is a result of climate transformations generated by various industries and people’s harmful attitudes towards their natural surroundings. Memory and objects are also central coordinates in analysing how the future actualizes the past, since the characters rest their survival on a book (The History of Bees) and on a boat (The End of the Ocean). Moreover, Foucault’s concept of ‘heterotopy’ is illustrative of the liminal state in which the protagonists exist. The catastrophic spatiality encapsulates trauma, the will to transgress time, and the absence of the beloved ones. Survival is the narrative thread that opens the communication between different generations, and loneliness or death are pivotal elements for recreating the present, which, in Lunde’s novels, is seen as unfavourable, but nevertheless having ingrained a sense of hope for the future.

The Grass Square Latch Paving Agency Based on the Bionic Spinning Knife

To better solve the problem of land desertification, this paper designed a portable grass grid-laying robot to lay grass squares to prevent wind and sand fixation. Among them, the ploughing module was proposed to use a bionic rotary tillage knife to improve soil cutting efficiency. By analyzing the characteristics of the forefoot claw contour curve of the groundhog, the point cloud data of the claw toe profile curve was obtained by reverse engineering technique, and then the Gaussian equation of the contour curve was fitted by MATLAB and the toe tip profile fitting curve was obtained. The BT model of the obtained fitting curve was applied to the national standard rotary tillage knife to design a preliminary bionic rotary tillage knife. When W0 was 50 mm and θ was 35°, the resistance of the rotary tillage knife was the least and the cutting performance was the best, and the final bionic rotary tillage knife was designed. In the field test, the data pointed out that compared with the traditional national standard rotary tillage knife, the maximum stress of the bionic rotary tillage knife was only 32.21 MPA, the average torque decreased by 10.16% compared with the national standard rotary tillage knife, the average power decreased by 7.68% to 71.4 KW, the tool quality was reduced by 8.26%, and the crushing rate was greatly improved. This study can provide some reference for the design of grass grid laying machines and rotary tillage knives to reduce resistance and consumption.

Production of Environmental Sensitivity Maps for Desertification in Southern Marshes of Iraq

The arid and semi-arid regions have faced critical desertification problems in the last decades. This phenomenon is caused either by human actions or natural circumstances. The study aims to identify the sensitive areas of desertification in the marshlands of southern Iraq using the Environmental Sensitivity Areas Index (ESAI) for desertification. The study area is located between longitudes (46.1° to 48.1° E) and latitude (29.55° to 32.55° N), which includes parts of the governorates of Al-Amarah, Al-Basara and Al-Nasiriyah in southern Iraq with an area of about 27,989 km2. Satellite image processing for the Landsat OLI sensor of 2021 was adopted to characterize the general appearance of the interest area. Arc Gis ver.10.7 programs were used to analyze different data and produce the Desertification Sensitivity Index (DSI) and maps for the parameters for evaluating southern marshes’ desertification. Nine parameters are grouped into three orderly indices concerning the behaviour of desertification, and weighting factors are assigned in each index. This study found that the study area highly sensitive to desertification represents (10781.14 km2 of the total area) about 38.52% of the study area. The area sensitive to desertification covers about 38.42%, about 10752.92 km2 of the total area. Areas of low sensitivity to desertification appear throughout the marshes, representing 23.06%, about 6454.67 km2 of the total area. The result shows that the area is suffering from reduced water supplies and the human destruction of natural grazing areas for urban expansion or cultivation of seasonal crops.

The future threat of desertification in Iraq

Desertification worldwide has increased dramatically since the middle of the last century. This is also a dangerous threat to Iraq, primarily due to years of neglecting this issue. The areas affected by desertification vary from one country to another in the Arab region, which is about (40) million hectares in Iraq. The problem has mainly spread in Iraq due to military operations that have destroyed soil quality since 1980. This has led to other serious consequences: turning productive land into barren land, increased dunes, and increased pressure on groundwater to threaten food and water security. This study will discuss options to address the desertification problem in Iraq for now and how this will progress in 5 years. It will first identify the key issues of desertification in Iraq before evaluating the current and future problem environment. It will also provide potential solutions and a problem cluster now and in 5 years. It is essential to discuss how these will progress into the future, especially in Iraq's unstable political environment with an ongoing war. It will suggest some viable options for the country when political stability is achieved and outline how evaluation criteria can be applied to the possible solutions. Keywords: Desertification; Management; Iraq

Asymmetric impact of income and price on kerosene consumption in Cameroon: new evidence from NARDL

PurposeThis research paper aims to examine the asymmetric impact of income and price on household consumption of kerosene in Cameroon.Design/methodology/approachThe methodological approach consists of testing for stationarity using the augmented Dickey–Fuller and Andrews and Zivot tests, determining cointegration using nonlinear autoregressive distributed lag (NARDL) test approach and finally examining asymmetry using the Wald test.FindingsResults of the stationarity tests reveal that variables are all integrated of order less than two I(2). The NARDL approach indicates that the (positive and negative) income shock and the positive price boom negatively influence consumption in the long- and short-run. The same is true for the negative price shock, but the latter remains insignificant. Furthermore, the Wald test carried out in the study confirms that the cumulative effects of the positive and negative income and price shocks are asymmetric.Originality/valueThe increase in the price of kerosene due to the lifting of subsidies has led to a decrease in household consumption and an unfortunate increase in the loss of tree cover in Cameroon. According to the results, this phenomenon will persist even if the price is reduced. Actions aimed at reducing its production at the expense of liquefied petroleum gas, electricity and renewable energy should be encouraged to limit the loss of vegetation cover. Thus, this study could contribute to solving the problem of deforestation and desertification in Cameroon.

Synthetic bacterial communities reshape microbial communities and enhance nutrient supply in desertified land of Northwest China

Climate change and human disturbance have led to widespread soil degradation worldwide. The problem of desertification is gradually destroying soil carbon accumulation. Synthetic bacterial communities (SynComs) are a healthy solution capable of improving the microbiome for plant growth. However, the effect of SynCom on nutrient functions in desertified land remains poorly understood. Here, two years of different treatments (control, chemical fertilizer, SynCom, combined SynCom-Chemical fertilizer) were conducted on desertified land in the Loess Plateau, and we aimed to reveal the effects of introducing SynCom on bacterial communities and nutrient multifunctionality. The SynCom enriched more beneficial bacteria as key microorganisms and increased biodiversity. At the same time, the bacterial community structure of the desertified land shifted significantly and remained stable at the soil surface (0–10 cm). We found that SynCom enhanced the complexity of the bacterial network with higher modularity. Our results also revealed the influence of biotic and abiotic factors on nutrient availability. Bacterial diversity and soil electrical conductivity (EC) were the significant influencing factors for chemical and combined fertilizers. However, SynCom exhibited stronger bacterial effects, and soil organic matter significantly affected the biodiversity-ecosystem function (BEF) relationships. Overall, this study illustrates the impact of microbial amendment on nutrient function in desertified land and provides insights into SynCom application to enhance ecosystem restoration and carbon sinks.

Research on the Resilience Assessment of Rural Landscapes in the Context of Karst Rocky Desertification Control: A Case Study of Fanhua Village in Guizhou Province

The ecological rehabilitation project has greatly curbed the serious problem of karst rocky desertification (KRD) in southern China and significantly changed the ecological environment and landscape pattern of the karst rocky desertification control areas (KRDCA). As one of the most important social–ecological fragile areas in the world, rural landscapes in KRDCA still show a strong sensitivity to disturbance. To reduce risks and improve the resilience of landscapes, this paper constructs a framework for assessing rural landscape resilience in KRDCA from the three dimensions of ecology, engineering, and social culture, based on the concept of resilience defined by the United Nations International Agency for Disaster Reduction. Considering the characteristics of rural landscapes in KRDCA, we select typical villages for empirical study. The results show the following: (1) The KRDCA is highly sensitive to natural disasters due to its special dual geomorphic structure characteristics. The disaster preparedness capacity of villages is the key factor determining the resilience of rural landscapes. The analysis of the disaster preparedness capacities of rural landscape structures with different vulnerability characteristics can be used as an effective means of evaluating the resilience level of rural landscapes in KRDCA. (2) Based on the empirical analysis of Fanhua village, which is a typical KRDCA in southern China, we found that the ecological system and engineering system of the village landscape have high resilience, while the resilience of the social and cultural systems are weak. This is due to the fact that the large number of rural population emigration in recent years has resulted in villages being at the key node of the reorganization of the social and cultural value system. The unstable sociocultural value system reduces the ability of rural landscapes to adapt to disturbance or environmental change. The study results could guide improvement strategies for subsequent landscape planning and inspire new ideas and methods for the implementation of rural revitalization strategies and the improvement of landscape resilience in KRDCA.

A Novel Desert Vegetation Extraction and Shadow Separation Method Based on Visible Light Images from Unmanned Aerial Vehicles

Owing to factors such as climate change and human activities, ecological and environmental problems of land desertification have emerged in many regions around the world, among which the problem of land desertification in northwestern China is particularly serious. To grasp the trend of land desertification and the degree of natural vegetation degradation in northwest China is a basic prerequisite for managing the fragile ecological environment there. Visible light remote sensing images taken by a UAV can monitor the vegetation cover in desert areas on a large scale and with high time efficiency. However, as there are many low shrubs in desert areas, the shadows cast by them are darker, and the traditional RGB color-space-based vegetation index is affected by the shadow texture when extracting vegetation, so it is difficult to achieve high accuracy. For this reason, this paper proposes the Lab color-space-based vegetation index L2AVI (L-a-a vegetation index) to solve this problem. The EXG (excess green index), NGRDI (normalized green-red difference index), VDVI (visible band difference vegetation index), MGRVI (modified green-red vegetation index), and RGBVI (red-green-blue vegetation index) constructed based on RGB color space were used as control experiments in the three selected study areas. The results show that, although the extraction accuracies of the vegetation indices constructed based on RGB color space all reach more than 70%, these vegetation indices are all affected by the shadow texture to different degrees, and there are many problems of misdetection and omission. However, the accuracy of the L2AVI index can reach 99.20%, 99.73%, and 99.69%, respectively, avoiding the problem of omission due to vegetation shading and having a high extraction accuracy. Therefore, the L2AVI index can provide technical support and a decision basis for the protection and control of land desertification in northwest China.