Temporal and spatial variations in the seasonal patterns of CO2 flux in boreal, temperate, and tropical forests in East Asia

Influence of Leaf Area Index Prescriptions on Simulations of Heat, Moisture, and Carbon Fluxes

“…It is therefore the background soil albedo, rather than the vegetation albedo, that has a large influence on overall surface albedo in these regions. We found larger impacts on the terrestrial carbon balance, with LAI strongly positively correlated to gross primary production and autotrophic respiration and negatively correlated with heterotrophic respiration, consistent with both observational (Barr et al 2004;Saigusa et al 2008;Duursma et al 2009;Keith et al 2012) and modeling (Puma et al 2013) studies that report a tight coupling between LAI and primary production. This tight coupling is not unexpected as LAI is a key variable in the parameterization of the carbon cycle.…”

“…Barr et al (2004) investigated the influence of LAI on net ecosystem production in a deciduous forest in Canada and found a tight coupling between the annual maximum LAI and production. Saigusa et al (2008) used data from flux towers and found that temperate deciduous forests showed the greatest positive net ecosystem production after leaf expansion (higher LAI) in early summer. Duursma et al (2009) used measurements from coniferous stands in Europe and found that LAI was a significant influence on gross primary production (GPP).…”

Water Quality and Aquatic Insects Study at the Lower Kinabatangan River Catchment, Sabah: In Response to Weak La Niña Event

“…They are mainly characterised by seasonal inundation (Hamilton 2002;Mayora et al 2013), received high solar radiation (Saigusa et al 2008) and rich in biodiversity (Bruford et al 2010). However, deforestation, active land development, land conversion for mechanized agriculture such as oil palm plantations (Mercer et al 2013), industrial and domestic waste discharge (Azrina et al 2006) often contribute to river water quality deterioration in the tropical regions.…”

CO2 flux observation in various forests of Monsoon-Asia

“…CO 2 flux and the carbon cycle in forest communities are influenced by many environmental factors, thus their characteristics have very wide variations; for example, the key factors in interannual variation of net ecosystem production (NEP) are reported to be temperature and solar radiation during the growing season in humid temperate forests (i.e., Ohtani et al 2005;Saigusa et al 2005) and the length and strength of the dry season in tropical and subtropical forests (i.e., Saigusa et al 2008;Yu et al 2008). Thus, it can be said that previous studies have not clarified all characteristics of the carbon cycle in Monsoon Asian forest with its wide variations.…”

“…Accordingly, forest type is developed on a multifarious range, including evergreen coniferous forest, temperate deciduous forest, and tropical rainforest. CO 2 flux observations have been carried out and results published for forest types such as evergreen coniferous forest (i.e., Kosugi et al 2005;Hsieh et al 2008;Wen et al 2010), temperate deciduous forest (i.e., Yasuda et al 1998;Saigusa et al 2002;Hirata et al 2007), mixed coniferous and broadleaved forest (Kim et al 2006), tropical rainforest (i.e., Kumagai et al 2006;Kosugi et al, 2008), and tropical peat swamp forest (Hirano et al 2007).…”