Pub Date : 2019-04-24DOI: 10.1201/9780429187957-13
M. Rahman, G. Mostafa, S. Razia, J. Shoaib
{"title":"Land degradation in Bangladesh","authors":"M. Rahman, G. Mostafa, S. Razia, J. Shoaib","doi":"10.1201/9780429187957-13","DOIUrl":"https://doi.org/10.1201/9780429187957-13","url":null,"abstract":"","PeriodicalId":229295,"journal":{"name":"Response to Land Degradation","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133190145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-04-24DOI: 10.1201/9780429187957-38
I. Hannam
{"title":"A global view of the law and policy to manage land degradation","authors":"I. Hannam","doi":"10.1201/9780429187957-38","DOIUrl":"https://doi.org/10.1201/9780429187957-38","url":null,"abstract":"","PeriodicalId":229295,"journal":{"name":"Response to Land Degradation","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122981880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Vulnerability to desertification in Africa is assessed using the information on soils, climate, and the previously evaluated land resource stresses. Desertification is, “land degradation in arid, semi-arid, and dry sub-humid areas resulting from various factors, including climatic variations and human activities”. Excluded in the definition are areas that have a hyper-arid or a humid climate. The GIS Desertification Vulnerability map was coupled to an interpolated population density map to obtain estimates of the number of persons affected by desertification. Desertification processes affect about 46% of Africa. The significance of this large area becomes evident when one considers that about 43% of the continent is characterized as extreme deserts (the desert margins represent the areas with very high vulnerability). Only about 11% of the land mass is humid and by definition is excluded from desertification processes. There are about 2.5 million km2 of land under low risk, 3.6 million km2 under moderate risk, 4.6 million km2 under high risk, and 2.9 million km2 under very high risk. The region that has the highest propensity is located along the desert margins and occupies about 5% of the land mass. It is estimated that about 22 million people (2.9% of the total population) live in this area. The low, moderate, and high vulnerability classes occupy 14, 16, and 11% respectively and together impact about 485 million people. Agro-Science Vol.2(2) 2001: 1-10
{"title":"Land resource stresses and desertification in Africa","authors":"P. Reich, S. Numbem, RA Almaraz, H. Eswaran","doi":"10.4314/AS.V2I2.1484","DOIUrl":"https://doi.org/10.4314/AS.V2I2.1484","url":null,"abstract":"Vulnerability to desertification in Africa is assessed using the information on soils, climate, and the previously evaluated land resource stresses. Desertification is, “land degradation in arid, semi-arid, and dry sub-humid areas resulting from various factors, including climatic variations and human activities”. Excluded in the definition are areas that have a hyper-arid or a humid climate. The GIS Desertification Vulnerability map was coupled to an interpolated population density map to obtain estimates of the number of persons affected by desertification. Desertification processes affect about 46% of Africa. The significance of this large area becomes evident when one considers that about 43% of the continent is characterized as extreme deserts (the desert margins represent the areas with very high vulnerability). Only about 11% of the land mass is humid and by definition is excluded from desertification processes. There are about 2.5 million km2 of land under low risk, 3.6 million km2 under moderate risk, 4.6 million km2 under high risk, and 2.9 million km2 under very high risk. The region that has the highest propensity is located along the desert margins and occupies about 5% of the land mass. It is estimated that about 22 million people (2.9% of the total population) live in this area. The low, moderate, and high vulnerability classes occupy 14, 16, and 11% respectively and together impact about 485 million people.\u0000 Agro-Science Vol.2(2) 2001: 1-10","PeriodicalId":229295,"journal":{"name":"Response to Land Degradation","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124028959","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Food production and environmental degradation","authors":"E. M. Bridges., L. R. Oldeman","doi":"10.1201/9780429187957-5","DOIUrl":"https://doi.org/10.1201/9780429187957-5","url":null,"abstract":"","PeriodicalId":229295,"journal":{"name":"Response to Land Degradation","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129264224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1201/9780429187957-23
L. R. Oldeman, G. V. Lynden
{"title":"Linking methodologies for assessing land resources, their problems and possible solutions at small scales","authors":"L. R. Oldeman, G. V. Lynden","doi":"10.1201/9780429187957-23","DOIUrl":"https://doi.org/10.1201/9780429187957-23","url":null,"abstract":"","PeriodicalId":229295,"journal":{"name":"Response to Land Degradation","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121858156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1201/9780429187957-26
E. Karavanova, D. Shrestha, D. Orlov
Remote sensing techniques were applied to study saline soils in the semi-arid environment, belonging to the territory of the Dzhizakskaya steppe of Uzbekistan. Aerial photographs (scale 1:2,000) were used in the sample area to investigate the spectral response of various soil groups prevalent in the area. Satellite photographs were used to map saline soils in the investigated area. Multispectral photographs in wave bands green (510-600 nm), red (600-700 nm) and infrared (700-900 nm), taken aboard a Russian satellite, were digitally scanned. The data were used for the classification of saline soils which allow 5 classes of salinity levels with estimated accuracy of about 70 %. The green band has the most information with regard to salinity. Apart from soil moisture variation, the main factors influencing spectral reflectance characteristics of saline soils are humus, carbonates, gypsum and water-soluble salt contents of which the influence of the latter is by far the greatest.
{"title":"Application of remote sensing techniques for the study of soil salinity in semi-arid Uzbekistan","authors":"E. Karavanova, D. Shrestha, D. Orlov","doi":"10.1201/9780429187957-26","DOIUrl":"https://doi.org/10.1201/9780429187957-26","url":null,"abstract":"Remote sensing techniques were applied to study saline soils in the semi-arid environment, belonging to the territory of the Dzhizakskaya steppe of Uzbekistan. Aerial photographs (scale 1:2,000) were used in the sample area to investigate the spectral response of various soil groups prevalent in the area. Satellite photographs were used to map saline soils in the investigated area. Multispectral photographs in wave bands green (510-600 nm), red (600-700 nm) and infrared (700-900 nm), taken aboard a Russian satellite, were digitally scanned. The data were used for the classification of saline soils which allow 5 classes of salinity levels with estimated accuracy of about 70 %. The green band has the most information with regard to salinity. Apart from soil moisture variation, the main factors influencing spectral reflectance characteristics of saline soils are humus, carbonates, gypsum and water-soluble salt contents of which the influence of the latter is by far the greatest.","PeriodicalId":229295,"journal":{"name":"Response to Land Degradation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130358581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.1201/9780429187957-18
A. Tenberg, M. Stocking
{"title":"Land degradation, food security, and agro-biodiversity—examining an old problem in a new way","authors":"A. Tenberg, M. Stocking","doi":"10.1201/9780429187957-18","DOIUrl":"https://doi.org/10.1201/9780429187957-18","url":null,"abstract":"","PeriodicalId":229295,"journal":{"name":"Response to Land Degradation","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127062477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In Bridges, E. M.; Hannam, I. D.; Oldeman, L. R.; Penning de Vries, F. W. T.; Scherr, S. J.; Sombatpanit, S.; (Eds.), Response to land degradation. New Delhi, India: Oxford & IBH Publishing
In Bridges, E. M.; Hannam, I. D.; Oldeman, L. R.; Penning de Vries, F. W. T.; Scherr, S. J.; Sombatpanit, S.; (Eds.), Response to land degradation.印度新德里：牛津和 IBH 出版社
{"title":"Land pressure and soil nutrient depletion in sub-Saharan Africa","authors":"P. Drechsel, F. D. Vries","doi":"10.1201/9780429187957-8","DOIUrl":"https://doi.org/10.1201/9780429187957-8","url":null,"abstract":"In Bridges, E. M.; Hannam, I. D.; Oldeman, L. R.; Penning de Vries, F. W. T.; Scherr, S. J.; Sombatpanit, S.; (Eds.), Response to land degradation. New Delhi, India: Oxford & IBH Publishing","PeriodicalId":229295,"journal":{"name":"Response to Land Degradation","volume":"315 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134228059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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