不同氮沉降水平下两种林型的主要土壤酶活性

应用生态学报

不同氮沉降水平下两种林型的主要土壤酶活性

赵玉涛^1,2;李雪峰¹;韩士杰¹;胡艳玲^1,2

¹中国科学院沈阳应用生态研究所，沈阳 110016; ²中国科学院研究生院，北京 100039

收稿日期:2008-02-22 修回日期:1900-01-01 出版日期:2008-12-20 发布日期:2008-12-20

Soil enzyme activities under two forest types as affected by different levels of nitrogen deposition.

ZHAO Yu-tao^1,2;LI Xue-feng¹; HAN Shi-jie¹; HU Yan-ling^1,2

¹Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;²Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Received:2008-02-22 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20

摘要/Abstract

摘要： 模拟研究了天然阔叶红松林和天然次生杨桦林不同氮沉降（0、25和50 kg N·hm^-2·a^-1)水平下土壤酶活性(纤维素酶、多酚氧化酶和蔗糖酶)的变化趋势.结果表明：氮沉降增加对土壤酶活性的作用与林分类型有关，短期施氮可以显著影响土壤酶的活性;高氮沉降降低了土壤多酚氧化酶活性，且随着多酚氧化酶活性的降低，两种林型土壤纤维素酶和蔗糖酶活性也有降低的趋势.

关键词: 鲜食葡萄, 葡萄品种, 叶面有机硒肥, 营养品质

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·hm^-2·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.

Key words: grape variety, table grape, nutrition and quality, foliar organic selenium fertilizer

赵玉涛^1,2;李雪峰¹;韩士杰¹;胡艳玲^1,2 . 不同氮沉降水平下两种林型的主要土壤酶活性[J]. 应用生态学报.

ZHAO Yu-tao^1,2;LI Xue-feng¹; HAN Shi-jie¹; HU Yan-ling^1,2. Soil enzyme activities under two forest types as affected by different levels of nitrogen deposition.[J]. Chinese Journal of Applied Ecology.

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