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湿地森林在蓄洪防旱、净化水质等方面对区域水文过程起着重要的调控作用。以往对于淡水湿地森林水文的研究多集中在运用传统水文学方法研究单一水文过程,很少将各水文过程作为一个整体来研究,且各个过程对降水截留效应的影响程度也未全部量化。而利用水分子中天然存在的氢氧稳定同位素作为示踪剂可综合反映并量化植被和土壤对降水的截留能力。文中综述湿地森林对水文过程调控作用的国内外研究概况,探讨氢氧稳定同位素技术在湿地森林水文研究中的进展,包括大气降水、林冠穿透水、降雨径流、土壤水、地下水、蒸发水、植物水的水分来源及各水体的转化关系等。在全球变化背景下,运用氢氧同位素技术系统定量地分析降水在生态系统水文过程的分配比例对于揭示湿地森林植被结构对水文过程的调控机制等具有重要意义,同时也可为建立淡水湿地森林植被恢复模式和制定保护策略提供参考。
Wetland forests plays an important regulatory role in regional hydrological processes in flood control and drought mitigation and water purification. Previous researches on the hydrology of freshwater wetlands focused more on the study of single hydrological processes by using traditional hydrology methods, seldom studied each hydrological process as a whole, and did not quantify the impact of each process on the interception of precipitation. The use of naturally occurring hydrogen and oxygen isotopes in water molecules as tracers can comprehensively reflect and quantify the interception ability of vegetation and soil on precipitation. In this paper, the overview of the research on the regulatory role of wetland forests to hydrological processes is reviewed. The progress of hydrothermal stable isotope techniques in wetland forest hydrology is reviewed, including atmospheric precipitation, canopy penetration, rainfall runoff, soil water, groundwater, Plant water source of water and the conversion of the water body and so on. In the context of global change, the quantitative analysis of the distribution of precipitation in the ecosystem hydrological process using the system of hydrogen and oxygen isotopes is of great significance for revealing the regulatory mechanism of the wetland vegetation structure on the hydrological process, and also for the establishment of freshwater wetland forest vegetation Recovery mode and formulation of protection strategies.