Combined impact of local climate and soil properties on soil moisture patterns

摘要: Abstract. Soil plays a key role in terrestrial water dynamics by retaining precipitation on land. A balance approach is used to evaluate spatial and temporal variations soil moisture Sri Lanka, country characterized high variability as reflected the recognition of three regions country, wet zone, intermediate dry zone. We show that combination local climate properties drive patterns deficits island, with soils buffering zone enhancing drought Changes historical are most notable for region consistently variable deficits. Counterfactuals change scenarios indicate temperature will increases deficit likelihoods (up 20 %) future, greatest impact zones, where more than 80 % national rice production concentrated. Given projections less uncertain other impacts, further evaluation future stresses needed. Coupled remotely-sensed data, findings from this study have implications infrastructural planning seasonal crop allocations zones degree (i.e., neither nor dry). Because hydrologic regimes reflect inherent, vulnerabilities, management decisions need incorporate regional variabilities assessments adaptations.