Zhao Yu-tao, Li Xue-feng, Han Shi-jie, Hu Yan-ling
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Ying Yong Sheng Tai Xue Bao. 2008 Dec;19(12):2769-73.
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.
进行了一项模拟试验，以研究在0、25和50 kg·hm⁻²·a⁻¹氮沉降影响下，天然阔叶红松林和次生杨桦混交林中土壤纤维素酶、多酚氧化酶和蔗糖酶活性的变化趋势。结果表明，氮沉降增加对试验酶活性的影响因森林类型而异，短期施氮会显著影响试验酶活性。高氮沉降降低了土壤多酚氧化酶活性，相应地，土壤纤维素酶和蔗糖酶活性也有下降趋势。
