共 11 条
[7]
Nutrient limitation and botanical diversity in wetlands: can fertilisation raise species richness?[J] . Sabine Güsewell,Kathleen M. Bailey,Wilma J. Roem,Barbara L. Bedford.Oikos . 2005 (1)
[8]
Critical N:P values: Predicting nutrient deficiencies in desert shrublands[J] . R.E. Drenovsky,J.H. Richards.Plant and Soil . 2004 (1)
[9]
N : P ratios in terrestrial plants: variation and functional significance[J] . SabineGüsewell.New Phytologist . 2004 (2)