- NSERC ,AKA| Effect of fast cycling carbon on the decomposition of old soil organic matter (FASTCARBON)
Chaoyang Wu; Jing M Chen;Chaoyang Wu
Harvested from ORCID Public Data FileChaoyang Wu in OpenAIRE Jukka Pumpanen; Alessandro Cescatti; +9 AuthorsJukka Pumpanen
Harvested from ORCID Public Data FileJukka Pumpanen in OpenAIRE Chaoyang Wu; Jing M Chen;Chaoyang Wu
Harvested from ORCID Public Data FileChaoyang Wu in OpenAIRE Jukka Pumpanen; Alessandro Cescatti;Jukka Pumpanen
Harvested from ORCID Public Data FileJukka Pumpanen in OpenAIRE Barbara Marcolla; Barbara Marcolla
Harvested from ORCID Public Data FileBarbara Marcolla in OpenAIRE Peter D Blanken; Peter D Blanken
Harvested from ORCID Public Data FilePeter D Blanken in OpenAIRE Jonas Ardö; Jonas Ardö
Harvested from ORCID Public Data FileJonas Ardö in OpenAIRE Yanhong Tang; Yanhong Tang
Harvested from ORCID Public Data FileYanhong Tang in OpenAIRE
Vincenzo Magliulo; Vincenzo Magliulo
Derived by OpenAIRE algorithms or harvested from 3rd party repositoriesVincenzo Magliulo in OpenAIRE Teodoro Georgiadis; Henrik Soegaard; David R Cook; Richard J Harding.;Teodoro Georgiadis
Harvested from ORCID Public Data FileTeodoro Georgiadis in OpenAIRESoil moisture induced droughts are expected to become more frequent under future global climate change. Precipitation has been previously assumed to be mainly responsible for variability in summer soil moisture. However, little is known about the impacts of precipitation frequency on summer soil moisture, either interannually or spatially. To better understand the temporal and spatial drivers of summer drought, 415 site yr measurements observed at 75 flux sites world wide were used to analyze the temporal and spatial relationships between summer soil water content (SWC) and the precipitation frequencies at various temporal scales, i.e., from half-hourly, 3, 6, 12 and 24 h measurements. Summer precipitation was found to be an indicator of interannual SWC variability with r of 0.49 (p < 0.001) for the overall dataset. However, interannual variability in summer SWC was also significantly correlated with the five precipitation frequencies and the sub-daily precipitation frequencies seemed to explain the interannual SWC variability better than the total of precipitation. Spatially, all these precipitation frequencies were better indicators of summer SWC than precipitation totals, but these better performances were only observed in non-forest ecosystems. Our results demonstrate that precipitation frequency may play an important role in regulating both interannual and spatial variations of summer SWC, which has probably been overlooked or underestimated. However, the spatial interpretation should carefully consider other factors, such as the plant functional types and soil characteristics of diverse ecoregions.
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