A database of annual atmospheric acid and nutrient deposition to China's forests

Anthropogenic emissions have substantially altered atmospheric acid and nutrient deposition in China. Understanding the status and characteristics of acid and nutrient deposition to China's forests is crucial to assess the consequent impacts, and to better guide forest management options. Based on a comprehensive literature review, here I present an updated database for annual acid and nutrient deposition during the period 1991-2015 in China's forests (CFAND 2.0). The database includes information from 56 forested sites on the water fluxes of bulk precipitation and throughfall, the concentrations of H⁺ (pH), dissolved inorganic nitrogen (N) (NH₄⁺ and NO₃^-), sulfur (S), dissolved phosphorus (P), potassium (K⁺), calcium (Ca²⁺) and magnesium (Mg²⁺) in bulk precipitation and throughfall, and the fluxes of dissolved inorganic N, S, dissolved P, K⁺, Ca²⁺ and Mg²⁺ in bulk deposition and throughfall. This database will help to understand the spatial patterns of acid and nutrient deposition, validate modelling results of acid and nutrient deposition and assess the ecological effects of acid and nutrient deposition in China's forests.