森林土壤酶活性对氮沉降的响应

发布时间：2019-04-08 09:41

【摘要】：近年来,大气氮沉降日益增加,已对森林生态系统产生了不可忽视的影响,而土壤酶活性反映了土壤肥力及土壤环境质量,因而可以用来评价氮沉降对森林土壤造成的影响。关于氮沉降对森林生态系统酶活性的影响已开展了一系列的研究,然而尚缺少系统总结。文中从森林土壤酶种类和林分类型角度总结了氮沉降对土壤酶活性的影响,并从氮沉降水平、氮种类形态、氮沉降与环境的交互作用等方面探讨了土壤酶活性对氮沉降的响应机制,提出未来研究热点是氮沉降对不同类型的森林土壤酶影响、不同森林类型土壤酶的氮沉降临界值、氮沉降对土壤酶活性影响的长期定位研究以及氮沉降与CO2浓度、温度、降雨、磷添加的交互作用对土壤酶活性影响,以期为未来森林土壤管理提供参考。
[Abstract]:In recent years, atmospheric nitrogen deposition is increasing day by day, which has had an important influence on forest ecosystem, and soil enzyme activity reflects soil fertility and soil environmental quality, so it can be used to evaluate the impact of nitrogen deposition on forest soil. A series of studies have been carried out on the effects of nitrogen deposition on the enzyme activity in forest ecosystems, but there is still a lack of systematic summary. In this paper, the effects of nitrogen deposition on soil enzyme activity were summarized from the point of view of forest soil enzyme types and stand types. The response mechanism of soil enzyme activity to nitrogen deposition was discussed in terms of the interaction between nitrogen deposition and environment. It was pointed out that the hot spot of future research was the effect of nitrogen deposition on different types of forest soil enzymes and the critical value of nitrogen deposition of different forest types of soil enzymes. The long-term localization of the effect of nitrogen deposition on soil enzyme activity and the interaction between nitrogen deposition and CO2 concentration, temperature, rainfall and phosphorus addition on soil enzyme activity were studied in order to provide reference for future forest soil management.
【作者单位】：华南农业大学林学与风景园林学院;
【基金】：中央财政林业科技推广示范项目“广东省生态公益林培育技术推广”(2015-GDTK-07)
【分类号】：S714;X51

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