Recent Declines in Nutrient Concentrations and Fluxes in the Lower Changjiang River.

The seasonal Mann-Kendall test revealed an increasing trend (although with a small slope value) in Changjiang River discharge ( n = 732, R 2 = 0.002, p = 0.0190) during the past several decades (see the blue line in Fig. 2 a), probably corresponding to combined effects of climate change, land-use management change, and ongoing vegetation greening over the river basin (Piao et al. 2015 ; Chen et al. 2019a ).

also in 37,718 other papers

( 2012 ) studied temporal variations in SiO 3 2− concentrations from 1960 to 2010 but did not find a decreasing trend.

also in 29,525 other papers