TY - JOUR T1 - Changes in soil microbial biomass and microbial activities in response to 7 years simulated pollutant nitrogen deposition on a heathland and two grasslands JO - ENVIRON POLLUT PY - 1998/01/01 AU - Johnson D AU - Leake JR AU - Lee JA AU - Campbell CD ED - VL - 103 IS - 2-3 SP - 239 EP - 250 Y2 - 2024/12/22 ER -