Causes and impacts of land degradation and desertification. The assessment report on land degradation and restoration full report, including spm and chapters. Guidelines for the national assessment and mapping of land degradation and conservation 2 this document is designed to support and guide national experts and institutions in preparing and implementing participatory national and subnational assessments of ld and slm module 2 above in a stepwise approach. Assessment, mitigation, and remediation reports research results in sustainable land management and land degradation status and mitigation in 36 countries around the world. Pdf l10 land degradation assessment of a selected study. To this end, this document is designed to provide a condensed set of referral resources with much of what is needed as background knowledge in assessing and monitoring land. The land degradation assessment in drylands lada project. Assessment of land degradation and implications on agricultural land in qalyubia governorate, egypt w. The focus is on humaninduced land degradation, although natural degradation processes are also addressed.
The paper suggests some rules of thumb for identifying the priority areas for government and donor intervention, including the need for targeted research on the productivity. Loss of natural fertility of soil because of loss of nutrients. Pollution of water resources from the contamination of. Economics of land degradation and improvement a global. Land degradation is cumulative this is the global issue. Land degradation guidelines for field assessment request pdf. Summary for policymakers spm land degradation and restoration laid out assessment reports and outputs. Glossaryterms closely related to assessment of land degradation.
The role of gis and remote sensing in land degradation. Desertification, land degradation and sustainability wiley. Use of the normalized difference vegetation index ndvi. Desertification has become increasingly politicized and there is a need. Application of dpsir framework for assessment of land. In this report, land degradation is defined as a negative trend 4 in land condition, caused by direct or indirect humaninduced processes.
A land degradation assessment and mapping method horizon ird. The complexities of the dynamics involved in the onset and progression of land degradation complicate its assessment. This report examines the scientific basis for the use of remotely sensed data, particularly normalized difference vegetation index ndvi, primarily for the assessment of land degradation at different scales and for a range of applications, including resilience of agroecosystems. Glasod assessment indicated that 15 per cent of the land surface was degraded. In this context isric has been asked to carry out a number of studies, at levels ranging from continental to national. Assessment of land degradation and implications on. Desertification offers a comprehensive overview of the subject and clearly emphasizes the link between local and global desertification processes and how past and current policy has affected arid environments and their populations. Assessment of land degradation by erosion soil loss by water, e. Global assessment of land degradation and improvement.
An update of glada global assessment of land degradation and improvement. In an attempt to halt land degradation in the catchment, a biophysical baseline assessment was carried out in 2008 to understand the conditions of key land degradation indicators such as soil. It includes background papers with continental and international perspectives dealing with land degradation and desertification studies. Research lessons and opportunities 1 international crops research institute for the semiarid tropics icrisat, patancheru, india.
Land degradation is the major consequences of direct interference of human activities in the natural phenomenon. It is viewed as any change or disturbance to the land perceived to be deleterious or undesirable. Pdf the lada project has prepared guidelines and manuals to describe land degradation and sustainable land management at different levels and at. Comparisons between uneps 1997 assessment and five alternative methods in botswana demonstrate that degradation extent and severity are highly dependent on the methods and context of the assessment. Assessment and monitoring of land degradation using. Worldwide land degradation and restoration assessment. Request pdf applications of ndvi for land degradation assessment in the late 1960s, several researchers began using red and nearinfrared reflected light to study vegetation pearson and. Land degradation and rehabilitation in ethiopia society at large is also suffering from uncertain information about the rates of land use change and land degradation. The impact of land degradation on food productivity. Shetty1,3 1 october 2004 desertification, drought, poverty and agriculture. Land degradation is a process of the reduction of land resources production potential and is the deterioration in quality of the environment for humans, vegetations, animals and aquatic life. Land degradation assessment and a monitoring framework. The soil integrates a variety of important processes involving vegetation growth, overland flow of water, infiltration, land use and land management.
The condition of the soil is one of the best indicators of land degradation. Land degradation is arguably australias major environmental problem. Applications of ndvi for land degradation assessment. Assessment report on land degradation and restoration ipbes. Land degradation development is an international journal which seeks to promote rational study of the recognition, monitoring, control and rehabilitation of degradation in terrestrial environments. Consequently, land degradations impact upon people is vast. Lada land degradation assessment in drylands methodology and. Methodologies of land degradation assessment should cover social and economic as well as direct. An assessment of land degradation in the save catchment of. Land degradationthe deterioration or loss of the productive capacity of the soils for present and futureis a global challenge that affects everyone through food insecurity, higher food prices, climate change, environmental hazards, and the loss of biodiversity and ecosystem services.
Soil degradation is, in itself, an indicator of land degradation. Land degradation is a process in which the value of the physical environment is affected by a. Land degradation assessment was carried out in somalia in response to numerous reports and suggestions about ongoing different types of degradation e. Planning strategies for sustainable land management require solid base line data on natural resources soils, physiography, climate, vegetation, land use, etc. Zdruli p, pagliai m, kapur s, faz cano a eds land degradation and desertification. Land degradation download ebook pdf, epub, tuebl, mobi. As in the rest of the world, rapid population growth and the advocacy of certain rural technology in australia have led to accelerated. The assessment of land degradation and restoration covers the global status of and trends in land degradation, by region and land cover type. This global phenomenon is caused by nature but also triggered by unsustainable land management, and embeds a cascade of environmental. Toward a holistic thinking for complex socioeconomic issues gianluca egidi 1, luca salvati 2, pavel cudlin 3, rosanna salvia 4 and manuela romagnoli 5 1 department of agricultural and forestry sciences dafne, tuscia university, via s. Poncehernandez r, koohafkan p 2010 a methodology for land degradation assessment at multiple scales based on the dpsir approach. Gis and remote sensing have an important role in linkage and analysis of such data, in particular for detection direct or indirect, extrapolation and. L10 land degradation assessment of a selected study area in somaliland.
The land degradation assessment in drylands lada project aims to develop. For local level assessment of land degradation and sustainable land management lada produced a comprehensive manual. In addition to land degradation assessment and land use cover dynamics, this research also included the study of spatial variability in soil ph, electrical conductivity ec and alkalinity using the digital soil mapping interpolation method in agricultural and non agricultural soils of the bathinda district in. Desertification has been defined as land degradation in arid, semiarid, and dry subhumid areas resulting from various factors, including climatic variations and human activities11. The role of biodiversity in rangeland management and policy, neudamm agricultural college, windhoek, 2728 october 2009. The assessment aims to enhance the knowledge base for. An essential assessment of the current land degradation status. Land degradation considers as a phenomena or more that decrease the current andor the potential soil capability to produce goods. Participants at the international workshop on drylands land degradation assessment in rome, on 57 december 2000, recognised and strongly supported this nested, cooperative and decentralised approach to the lada project formulation and implementation, provided funds were available.
The lada pdf and full project concept were well focused. This text adequately applies the research undertaken during the last 15 years on the topic. Young 1998 observes the lack of techniques to assess the extent and severity of land degradation. Guidelines for the national assessment and mapping of land. Land degradation is a process in which the value of the biophysical environment is affected by a combination of humaninduced processes acting upon the land. Isric report 201008, isric world soil information, wageningen, 58p pdf. Land degradation causes reduction or loss of land performance across the planet, either from the ecological or economic standpoints, playing a key role in the united nations agenda for environment since the adoption of sustainable development goals in 2015. The assessment report on land degradation and restoration 3 foreword urgent and concerted action is needed to avoid worsening land degradation in the face of population growth, unprecedented consumption, an increasingly globalized economy and climate change. Ipbes recently provided a comprehensive assessment of land degradation, declaring it to be a pervasive and systematic phenomenon that zoccurs in all parts of the terrestrial world ipbes 2018. Key words land degradation, land assessment, sustainable land management, lada. A short summary of this manual can be obtained by entering lada loc in the lrp freetext search box. However, current assessments of its global extent and severity are methodologically flawed and do little to promote sustainable land management.