摘要
生物土壤结皮可以作为一种模式系统来研究复杂的生态学问题,而吸湿凝结水是生物土壤结皮在干旱期维持功能活性的基础,吸湿凝结水输入期间生物土壤结皮的生理活动会影响土壤中的碳交换和许多生物地球化学过程,因此,在荒漠生态系统中,地表吸湿凝结水与生物土壤结皮的关系研究显得尤为重要。但由于吸湿凝结水的形成过程受下垫面特征以及诸多热力及气象环境要素的影响,需要基于土壤学、生物学、气象学、物理学和表面科学等学科的交叉集成研究。在综述国内外研究动态的基础上,根据吸湿凝结水形成的物理基础,对比分析了不同原理测量方法的优缺点及发展趋势,从吸湿凝结水对生物土壤结皮的作用机制和生物土壤结皮发育对吸湿凝结水形成的影响两方面总结和讨论了目前吸湿凝结水形成与生物土壤结皮关系研究的进展和不足,根据现有研究结果,阐述了在未来全球变化背景下,非降雨水输入特征的改变及对生物土壤结皮发育和荒漠生态系统功能的生态作用,并提出了当前研究中存在的问题及未来的研究重点,这些问题的解决将提高我们对荒漠生态系统稳定性和可持续性的科学认知水平。
Biological Soil Crusts(BSCs) can be used as a model system to study complex ecological issues. As a continuous water source,hygroscopic condensate is most important factor to the survival of BSCs in dry conditions,which influences the physiological activities of BSCs and soil carbon exchange and other biogeochemical processes. Therefore,the relationship between hygroscopic condensate and BSCs is particularly important in desert ecosystem. Considering the formation process of hygroscopic condensate is affected by underlying surface characteristics and many thermal and meteorological environmental factors,the crossintegrated research based on soil science,biology,meteorology,physics,surface science and other disciplines is proper for this study topic. This paper reviews the latest research trends on hygroscopic condensate and BSCs relationship, analyzes the advantages and disadvantages for different measurement methods and their development tendency, summarizes the effect mechanism of hygroscopic condensation to BSCs and the influence of BSCs growth on the formation of hygroscopic condensation,discusses the evolution and deficiency of current research on the relationship between hygroscopic condensation formation and BSCs based on above two aspects,states the change of non-rainfall water input and its ecological effect to BSCs growth and desert ecosystem function under the condition of future global changes. Furthermore,we put forward the existing problems in current research and the research priorities in future. The solution of these problems will improve our scientific understanding about the stability and sustainability of desert ecosystems.
作者
潘颜霞
张亚峰
虎瑞
PAN Yanxia;ZHANG Yafeng;HU Rui(Shapotou Desert Research and Experiment Station,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China)
出处
《地球科学进展》
CAS
CSCD
北大核心
2022年第1期99-109,共11页
Advances in Earth Science
基金
美丽中国生态文明建设科技工程专项“绿色环保沙化治理技术与示范”(编号:XDA23060202)
甘肃省自然科学基金项目“民勤荒漠绿洲过渡带植被—土壤系统水分运移特征及驱动机制研究”(编号:21JR7RA049)资助。
关键词
生物土壤结皮
凝结水
测定方法
生态意义
Biological soil crust
Hygroscopic condensate
Measurement method
Ecological significance