Managing nitrogen to restore water quality in China by Yu, C, Huang, X, Chen, H, Godfray, HCJ, Wright, JS, Hall, JW, Gong, P, Ni, S, Qiao, S, Huang, G, Xiao, Y, Zhang, J, Feng, Z, Ju, X, Ciais, P, Stenseth, NC, Hessen, DO, Sun, Z, Yu, L, Cai, W, Fu, H, Huang, X, Zhang, C, Liu, H, Taylor, J