Evaluating the Effects of Environmental Changes on the Gross Primary Production of Italian Forests

Remote Sensing

Fabio Maselli¹  Marco Moriondo¹  Marta Chiesi¹  Gherardo Chirici²  Nicola Puletti³  Anna Barbati⁴ 

[1] IBIMET-CNR, Via Madonna del Piano 10, 50019 Firenze, Italy; E-Mails:;DISTAT, Università del Molise, Contrada Fonte Lappone, 86090 Pesche, Isernia, Italy; E-Mail:;DISTAF, Università di Firenze, Via S. Bonaventura 13, 50145 Firenze, FI, Italy; E-Mail:;DISAFRI, Università della Tuscia, Via S. Camillo de Lellis, 01100, Viterbo, Italy; E-Mails:

关键词: Mediterranean forest;    GPP;    modified C-Fix;    environmental change;   

DOI  :  10.3390/rs1041108

来源: mdpi

【 摘 要 】

A ten-year data-set descriptive of Italian forest gross primary production (GPP) has been recently constructed by the application of Modified C-Fix, a parametric model driven by remote sensing and ancillary data. That data-set is currently being used to develop multivariate regression models which link the inter-year GPP variations of five forest types (white fir, beech, chestnut, deciduous and evergreen oaks) to seasonal values of temperature and precipitation. The five models obtained, which explain from 52% to 88% of the inter-year GPP variability, are then applied to predict the effects of expected environmental changes (+2 °C and increased CO₂ concentration). The results show a variable response of forest GPP to the simulated climate change, depending on the main ecosystem features. In contrast, the effects of increasing CO₂ concentration are always positive and similar to those given by a combination of the two environmental factors. These findings are analyzed with reference to previous studies on the subject, particularly concerning Mediterranean environments. The analysis confirms the plausibility of the scenarios obtained, which can cast light on the important issue of forest carbon pool variations under expected global changes.

【 授权许可】

CC BY   
© 2009 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.