Soil water content as a key factor determining the source of nitrogen (NH4+ or NO3−) absorbed by Douglas-fir (Pseudotsugamenziesii) and the pattern of rhizosphere pH along its roots
- 1 May 1991
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Forest Research
- Vol. 21 (5) , 616-625
- https://doi.org/10.1139/x91-085