Response of land surface in Indian China Peninsula to rainfall, El Nino, and DME [Depole Mode Event]
2005
Nishida, K.(Tsukuba Univ., Ibaraki (Japan). Inst. of Agriculturaland Forest Engineering) | Matsuda, S. | Kanae, S.
Response of vegetation to El Nino is said to be typically strong in the South East Asia. We studied this tendency in Indian China Peninsula by using 20 years of NOAA/AVHRR Pathfinder monthly 8 km composite data along with rainfall, Nino 3 SST anomaly (index of El Nino), and DMI (index of Dipole Mode Event; DME). Normalized Difference Vegetation Index (NDVI) was low and surface temperature (Ts) was high in the period of El Nino and DME, probably mainly because of shortage of rainfall. We found strong correlations between NDVI and those indices in the tropical rain forest along the Mekong river basin in Laos and Cambodia, whereas the coastal area showed relatively weak correlation. Seasonal behavior of NDVI and Ts was different from site to site. It implied that type of vegetation and land management can influence on response of terrestrial ecosystem to these climate changes in this tropical region.
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