Fig. 2From: Linking biological toxicity and the spectral characteristics of contamination in seriously polluted urban riversConcentrations of dissolved organic carbon (DOC) (a), total nitrogen (TN) (b), and total phosphorus (TP) (c) in surface water (SW), sediment pore water (SDPW), and soil pore water (SPW) along the Qingshui Stream longitudinal gradientsBack to article page