桑树响应酸沉降研究进展

Research Progress of Acid Deposition and Response Strategy of Mulberry

随着经济的高速发展和人类活动的不断影响,大气中NO_(x)、SO_(2)以及CO_(2)等酸性气体的排放量仍在持续增加,酸沉降危害问题仍是重要的环境问题之一。酸沉降通过淋溶植物体和土壤生态体系中的钙离子,干扰植物钙信号转导系统,进而影响植物抗逆和光合等诸多生理过程,环境酸化导致不同程度的生产力下降。桑树作为我国重要的经济树种和生态林木之一,对酸雨具有较强抗性,是研究酸沉降耐受性的理想材料。本文综述植物应对酸沉降胁迫的研究进展和桑树响应特征,为我国酸沉降危害区内农林生态系统的保护和科学防治提供科学依据。

With the rapid development of economy and the continuous influence of human activities,the emissions of acid gases such as NO_(x),SO_(2) and CO_(2) in the atmosphere continue to increase.The problem of acid deposition is still one of the important environmental problems.Acid deposition interferes with the calcium signal transduction system of plants through leaching calcium ions in plants and soil ecosystems,thereby affecting many physiological processes such as plant stress resistance and photosynthesis.Environmental acidification leads to different degrees of productivity decline.Mulberry,as one of the important economic tree species and ecological trees in China,has strong resistance to acid rain and is an ideal material for studying acid deposition tolerance.This article reviews the research progress of plants in response to acid deposition stress and the response characteristics of mulberry,which provides a scientific basis for the protection and scientific prevention of agricultural and forestry ecosystems in acid deposition hazard areas in China.