本文選題：土壤酶 + 經(jīng)營方式��； 參考：《應(yīng)用生態(tài)學(xué)報(bào)》2017年02期

【摘要】：研究粗放經(jīng)營和集約經(jīng)營條件下毛竹林蔗糖酶、纖維素酶、硝酸還原酶、脲酶和過氧化氫酶5種土壤酶活性對4種氮沉降水平(0、30、60和90 kg·hm-2·a-1)的響應(yīng).結(jié)果表明:與粗放經(jīng)營相比,集約經(jīng)營分別顯著提高土壤蔗糖酶、纖維素酶和脲酶活性55.5%、112.9%和28.6%,顯著抑制硝酸還原酶活性31.5%,對過氧化氫酶活性的影響不顯著.氮沉降顯著抑制粗放和集約經(jīng)營方式下毛竹林蔗糖酶活性20.0%~49.4%和36.2%~45.1%、纖維素酶活性20.5%~46.3%和18.3%~49.0%、硝酸還原酶活性67.9%~85.2%和15.2%~34.2%,以及集約經(jīng)營毛竹林脲酶活性23.1%~47.6%,顯著增加了粗放經(jīng)營毛竹林土壤脲酶活性8.1%~50.6%,對過氧化氫酶活性的影響不顯著.氮沉降與經(jīng)營方式的復(fù)合作用除對過氧化氫酶活性的影響不顯著外,對其他4種土壤酶活性的影響均達(dá)到顯著水平.
[Abstract]:The responses of five soil enzymes, sucrase, cellulase, nitrate reductase, urease and catalase, to four nitrogen deposition levels of 60 and 90 kg hm-2 ~ (-1) of Phyllostachys pubescens were studied under extensive and intensive management. The results showed that intensive management significantly increased soil sucrase, cellulase and urease activities, respectively, 112.9% and 28.6%, significantly inhibited nitrate reductase activity 31.5%, and had no significant effect on catalase activity. Nitrogen deposition significantly inhibited sucrase activity of bamboo forest in extensive and intensive management by 20.0% and 36.2% and 45.1%, Cellulase activity was 46.3% and 18.39.0, nitrate reductase activity was 67.2% and 15.234.22.2%, and urease activity in intensive management bamboo forest was 23.1D and 47.6T, which significantly increased extensive management. The soil urease activity of Phyllostachys pubescens stands at 8.1% and 50.6%, but has no significant effect on catalase activity. The compound effect of nitrogen deposition and management mode had no significant effect on the activity of catalase except for the other four kinds of soil enzyme activity.
【作者單位】： 浙江農(nóng)林大學(xué)亞熱帶森林培育國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家林業(yè)局“948”項(xiàng)目(2013-4-55) 國家自然科學(xué)基金項(xiàng)目(31270517,31470529)資助~~
【分類號(hào)】：S714.3

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