Effects of cascade dams on phosphorus bioavailability in surface sediments:A comparative study between the Nu River and the Upper Mekong River

The dataset include sediments phosphorus concentrations in the Nu River and the Lancang River for January 2018. Seven different phosphorus fractions in sediment samples were extracted, including total inorganic phosphorus (TIP), exchangeable phosphorus (Ex-P), aluminum-bound phosphorus (Al-P), iron-bound phosphorus (Fe-P), Calcium-bound phosphorus (Ca-P), residual phosphorus (Res-P) and organic phosphorus (Org-P) (sheet 1). Sediments particle size, mineral composition and environmental factors (ORP, DO, TOC, TP, Temp, pH, etc.) also were measured at the sampling sites (sheet 2,3,4).

本数据集涵盖2018年1月怒江与澜沧江的沉积物磷浓度数据。沉积物样品中共提取了7种不同形态的磷组分，包括总无机磷（total inorganic phosphorus, TIP）、交换态磷（exchangeable phosphorus, Ex-P）、铝结合态磷（aluminum-bound phosphorus, Al-P）、铁结合态磷（iron-bound phosphorus, Fe-P）、钙结合态磷（calcium-bound phosphorus, Ca-P）、残留态磷（residual phosphorus, Res-P）以及有机磷（organic phosphorus, Org-P），相关数据详见工作表1。采样点位同步测定了沉积物粒径、矿物组成以及多项环境因子，包括氧化还原电位（ORP）、溶解氧（DO）、总有机碳（TOC）、总磷（TP）、水温（Temp）与pH值等，相关数据分别收录于工作表2、3、4。