Sökning: "desertification mapping"

Hittade 5 uppsatser innehållade orden desertification mapping.

  1. 1. The role of agricultural interventions for the Sahelian re-greening

    Master-uppsats, Stockholms universitet/Stockholm Resilience Centre

    Författare :Anneli Sundin; [2013]
    Nyckelord :Re-greening; agricultural interventions; NDVI; Sahel; Burkina Faso; Niger; resilience; desertification;

    Sammanfattning : The Sahel region has over the past three decades experienced a greening trend, in terms of increased vegetation, and studies show that land management might have contributed to this trend. After periods of droughts in the 1970s and early 1980s development agencies have invested considerably in agricultural projects in the Sahel, promoting the use of improved farming techniques. LÄS MER

  3. 2. Investigation of deforestation in East Africa on regional scales

    Master-uppsats, Institutionen för naturgeografi och kvartärgeologi (INK)

    Författare :Yi-Hua Wu; [2011]
    Nyckelord :;

    Sammanfattning : Tropical forests contain abundant natural resources and play an important role in the balance of the ecosystems and environment. Depletion of forests could destroy habitats of endangered plants and animals and cause biodiversity loss. LÄS MER

  4. 3. Detection and analysis of changes in desertification in the Caspian Sea Region

    Master-uppsats, Institutionen för naturgeografi och kvartärgeologi (INK)

    Författare :Tahira Abbasova; [2010]
    Nyckelord :Caspian Region; desertification; Normalized Difference Vegetation Index NDVI ; ENVI; ArcGIS;

    Sammanfattning : The Caspian Region includes the Caspian Sea and five littoral states: Azerbaijan, Iran, Turkmenistan, Kazakhstan and Russian. 40% of the Caspian coastal zone is arid, 69% of this territory undergone desertification according to international reports. LÄS MER

  5. 4. Investigating vegetation changes in the African Sahel 1982-2002 : a comparative analysis using Landsat, MODIS and AVHRR remote sensing data

    Magister-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Martin Sjöström; [2004]
    Nyckelord :marklära; desertification; semi-arid; Sahara; physical geography; geomorphology; pedology; cartography; climatology; geomorfologi; naturgeografi; kartografi; klimatologi; Earth and Environmental Sciences;

    Sammanfattning : There has been much debate concerning the concept of degradation and desertification in semi-arid lands, in particular semi-arid Sub-Saharan Africa, during the last two decades. However, recent findings suggest a consistent trend of increasing satellite-derived vegetation greenness in much of the African Sahel as interpreted from Pathfinder Advanced Very High Resolution Radiometer (AVHRR) Normalized Difference Vegetation Index (NDVI) data for the period 1982-1999. LÄS MER

  7. 5. Desertification mapping of Horqin sandy land, inner Mongolia, by means of remote sensing

    Magister-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Patrik Bremborg; [1996]
    Nyckelord :geography; physical geography; desertification mapping; Horqin sandy land; inner Mongolia; remote sensing; Earth and Environmental Sciences;

    Sammanfattning : The extent of today's land degradation and desertification in the arid, semi-arid. and sub humid regions of China is a serious threat to the social and economic development in these areas. A national programme for monitoring and classification of drylands has been implemented by the Chinese Academy of Science. LÄS MER