title: [Soil enzyme activities under two forest types as affected by different levels of nitrogen deposition].
abstract: A simulation test was conducted to study the change trends of soil cellulase, polyphenol oxidase, and sucrase activities under natural broadleaf-Korean pine (Pinus koraiensis) and secondary poplar (Populus davidiana) -birch (Betula platyphylla) mixed forests as affected by 0, 25, and 50 kg x hm(-2) x a(-1) of N deposition. The results showed that the effects of elevated N deposition on test enzyme activities varied with forest type, and short-term nitrogen addition could significantly affect the test enzyme activities. High N deposition decreased soil polyphyneol oxidase activity, and correspondingly, soil cellulase and sucrase activities also had a trend of decrease.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. zhaoyutao237@163.com
authors.forename: Yu-tao
authors.initials: YT
authors.lastname: Zhao
authors.forename: Xue-feng
authors.initials: XF
authors.lastname: Li
authors.forename: Shi-jie
authors.initials: SJ
authors.lastname: Han
authors.forename: Yan-ling
authors.initials: YL
authors.lastname: Hu
mesh_terms: D002480:Cellulase / Q000378:metabolism; D009584:Nitrogen / Q000032:analysis*; D010088:Oxidoreductases / Q000378:metabolism; D028223:Pinus / Q000254:growth & development*; D032107:Populus / Q000254:growth & development*; D011891:Rain; D012987:Soil / Q000032:analysis*; D013393:Sucrase / Q000378:metabolism
chemical_list: D012987:Soil; D010088:Oxidoreductases; D002480:Cellulase; D013393:Sucrase; D009584:Nitrogen