Research hotspot and trend of plant water use in karst: Based on a bibliometric analysis from 1984 to 2022

IF 4.6 3区地球科学 Q1 GEOSCIENCES, MULTIDISCIPLINARY

China Geology Pub Date : 2025-01-25 DOI:10.31035/cg2023134

De-gen Zhu , Jing Ning , Hui Yang , Jun-bing Pu , Jian-hua Cao , Meng-xia Zhou , Mitja Prelovšek , Nataša Ravbar

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Abstract

Research on the ecohydrological processes of terrestrial plants is a frontier field comprising ecology, hydrology and global change research, yielding the key theoretical foundations of ecohydrology. In karst areas, due to its unique geological background, the karst landscape is strongly developed, with high bedrock exposure, high permeability, fragmented soils, shallow soils, and high spatial heterogeneity, resulting in very limited water storage for plant uptake and growth in rock fissures and shallow soils. Therefore, water conditions are an important ecological factor influencing plant growth. To comprehensively understand the current progress and development trends in plant water use research focusing on karst areas, this paper uses the VOSviewer software to analyze the literature on plant water use in karst areas between 1984 and 2022. The results showed that: (1) Research on plant water use in karst areas has developed rapidly worldwide, and the number of relevant studies in the literature have increased year by year, which together means that it is attracting more and more attention. (2) The investigation of plant water sources, geological background of karst areas, seasonal arid tropical climates, the relationship between δ¹³C values and plant water use efficiency, karst plant water use in karst savannas and subtropical areas, and ecosystems under climate change yields the knowledge base in this field. (3) Most studies in this area focus on the division of water sources of plants in karst areas, the methods of studying the water use sources of plants, and the water use strategies and efficiency of plants. (4) Future research will focus on how plant water use in karst areas is influenced by Earth's critical zones, climate change, and ecohydrological separation. These studies will provide a key scientific basis for guiding ecological restoration and promoting sustainable development in karst areas.

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喀斯特植物水分利用研究热点与趋势——基于1984 - 2022年文献计量学分析

陆生植物生态水文过程研究是集生态学、水文学和全球变化研究于一体的前沿领域，是生态水文学的重要理论基础。在喀斯特地区，由于其独特的地质背景，喀斯特景观非常发达，基岩暴露度高，渗透性高，土壤破碎，土壤浅，空间异质性强，导致岩石裂隙和浅层土壤中植物吸收和生长的储水量非常有限。因此，水分条件是影响植物生长的重要生态因子。为全面了解以喀斯特地区为重点的植物水分利用研究现状和发展趋势，本文利用VOSviewer软件对1984 - 2022年喀斯特地区植物水分利用文献进行分析。结果表明：(1)喀斯特地区植物水分利用研究在世界范围内发展迅速，相关文献研究数量逐年增加，受到越来越多的重视。(2)通过对植物水源、喀斯特地区地质背景、季节性干旱热带气候、δ13C值与植物水分利用效率的关系、喀斯特稀树草原和亚热带地区喀斯特植物水分利用、气候变化下生态系统等方面的研究，建立了该领域的知识基础。(3)该领域的研究多集中在喀斯特地区植物水源的划分、植物利用水源的研究方法、植物的水分利用策略和效率等方面。(4)喀斯特地区植物水分利用受地球临界带、气候变化和生态水文分离的影响。这些研究将为指导喀斯特地区生态修复和促进喀斯特地区可持续发展提供重要的科学依据。

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