Carbon, water and energy fluxes in agricultural systems of Australia and New Zealand

摘要: Abstract A comprehensive understanding of the effects agricultural management on climate–crop interactions has yet to emerge. Using a novel wavelet–statistics conjunction approach, we analysed synchronisation amongst fluxes (net ecosystem exchange NEE, evapotranspiration and sensible heat flux) seven environmental factors (e.g., air temperature, soil water content) 19 farm sites across Australia New Zealand. Irrigation fertilisation practices improved positive coupling between net productivity (NEP = −NEE) evapotranspiration, as hypothesised. Highly intense tended protect against stress, especially for irrigated crops in dry climates. By contrast, stress avoidance vegetation tropical hot desert climates was identified by reverse NEP flux (i.e., increases were synchronised with decreases flux). Some found be under control, whereas others fixed constraints at given location. Irrigated maize, almonds) showed high predictability only knowledge fluctuations climate (R2 > 0.78), nearly predictable strongly energy- or water-limited environments (0.60