Spatiotemporal modeling of net primary productivity of Eastern Mediterranean biomes under different regional climate change scenarios
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Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer International Publishing Ag
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The present study modeled how future terrestrial net primary productivity (NPP) changes spatiotemporally for the eastern Mediterranean biomes of Turkey using Carnegie Ames Stanford Approach (CASA) model, Moderate Resolution Imaging Spectroradiometer (MODIS) data, the four regional climate change scenarios (RCP 2.6, RCP 4.5, RCP 6.0 and RCP 8.5), and such ancillary data as percent tree cover, land use/cover map, soil texture, and normalized difference vegetation index (NDVI). A mean decrease occurred by 3.2% in the present (2000-2010) mean annual NPP of the most productive biome-deciduous broadleaf forest-in response to the average increases by 5 degrees C in maximum temperature, by 2 degrees C in minimum temperature, by 276 mm in maximum rainfall, and the average decrease by 69 mm in minimum rainfall among the RCPs for the future (2070-2100) period. The maximum annual NPP increases occurred by 4.4% for evergreen needle leaf forest, by 3.9% for grassland, 3.4% for cropland, 2.2% for mixed forest, and 1.1% for shrubland in response to RCP 8.5. Deciduous broadleaf forest NPP appeared to be more vulnerable than the other biomes to the decreased rainfall and the increased air temperature of the water-limited growing season projected by the RCPs. Increasing winter and spring temperatures appeared to benefit the earlier spring green-up of grasses, evergreen needle leaf trees, crops, and shrubs. Our results suggest that a shift from deciduous broadleaf forest toward conifer forest may become more widespread, in particular, in the southern, low-altitude areas of the study region.
Açıklama
Anahtar Kelimeler
Carbon Budget, Regional Climate Change, MODIS, NPP, Mediterranean
Kaynak
International Journal Of Environmental Research
WoS Q Değeri
Q4
Scopus Q Değeri
Q2
Cilt
10
Sayı
2
