Analysis of Land Use History and Fallow Vegetation Recovery

In the Karen area of Myanmar, where the Karen have practiced traditional shifting cultivation since colonial times, we tried to reconstruct a land use history of their shifting cultivation practices using a combination of field observations, global positioning system GPS mapping, and interviews conducted during , as well as analyses of JERS and LANDSAT satellite images taken in .The vegetation recovery process during the fallow period was also analyzed using a supervised classification of high-resolution QuickBird satellite images taken in .The satellite image analysis suggested that of the shifting cultivation fields could be extracted from JERS images taken between November and January by using the normalized difference vegetation index NDVI as an indicator.The overlap of shifting cultivation fields from to showed that the fallow period of most shifting cultivation in this area exceeded years.According to the vegetation recovery analysis, most fallow land was covered with bamboo within years after the harvest, and that fallow land was reopened when a few tree species started to grow in the bamboo-dominated forests.Vegetation analysis showed that around of the shifting cultivation fields were opened by slashing and burning bamboo-dominated forests in , although more tree-dominated forests with a longer fallow period could have been opened.These results showed that the recovery of bamboo-dominated forests is a key factor in maintaining the practice of shifting cultivation in this area

Agricultural land · Deforestation (computer science · Land use · Normalized Difference Vegetation Index · Rangeland · Vegetation (pathology · Earthquake and Disaster Impact Studies · Land Use and Ecosystem Services · Tree-ring climate responses