木本植物对高氮沉降的生理生态响应

Ec0physi0l0gical Responses of W oody Plants to Elevated Nitrogen Deposition

摘要:

从4个方面综述了木本植物对氮沉降增加的生理生态响应研究进展。(1)氮沉降增加引起木本植物组织氮浓度增加，从而改变其体内的氮代谢：(2)氮沉降影响植物的光合作用速率及与光合作用相关的含氮组分，一定范围内氮沉降会增加光合速率、光合色素和Rubisco含量：(3)氮沉降增加将导致植物的呼吸作用增强：(4)氮沉降增加不利于植物的抗逆性，导致植物的抗寒力和抗病虫害的能力下降。

Abstract:

During the past several decades， nitrogen deposition has brought a series of environmental and ecological problems．The subjects included in this literature review are：(1) elevated nitrogen deposition changes nitrogen metabolism in plants due to the increasing nitrogen concentration in plant tissues；(2) it influences photosynthesis including photosynthetic rate，photosynthetic pigments and Rubisco concentrations；(3) elevated nitrogen deposition increases plant respiration；and (4) increases the susceptibility of plant resistance to coldness，pests and diseases．