LANDIS-II Norway spruce PnET Romanian temperate forests SWAT Southern Carpathian forest management Southern Carpathians aerial laser scanning air pollution basal area bic Book Industry Communication::G Reference, information & interdisciplinary subjects::GP Research & information: general biodiversity calibration climate change climate change effects current annual increment diagnostic assessment drought response ecological indicators ecosystem restoration ecosystem services forest biomass forest ecosystem forest growth forests gas exchange hydrological model increment cores mountain forests n/a