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植物叶和根经济谱的研究进展
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Abstract:
以植物生态学为基础的研究引起了人们对植物叶片经济谱(LES)和根经济谱(RES)的兴趣。叶片经济谱的概念自提出以来一直受到广泛关注，它是植物叶片普遍存在的性状维度，体现了植物叶片对环境资源的权衡策略，叶片的各种性状间存在着一致的相关性。但目前证据表明LES和RES存在明显差异，LES是一维的，而RES可能是多维的。造成这种差异的两个根本原因是：(1) 在资源吸收方面根系面临着一个更复杂的优化难题；(2) 地下的多种资源可能会对根系的性状产生影响。总的来说，相比于LES，RES研究还存在很多不确定性。因此，本文通过总结LES研究方法和研究进展，指出了RES相关研究问题以及未来可能的研究方向，对于后续研究具有借鉴意义。本文再次强调了研究植物叶经济谱、根经济谱有助于我们构建全植株植物经济谱，对进一步研究全株植物的个体生存策略、植物群落生态学和生态系统功能具有重要意义。
Research based on plant ecology has aroused interest in plant leaf economic spectrum (LES) and root economic spectrum (RES). The concept of leaf economic spectrum has been widely concerned since it was proposed. It is a common trait dimension of plant leaves, reflecting the tradeoff strategy of plant leaves on environmental resources, and there are consistent correlations among various traits of leaves. But the current evidence suggests a clear difference between LES and RES, with LES being one-dimensional and RES possibly multidimensional. There are two fundamental reasons for this difference: (1) The root system faces a more complex optimization problem in terms of resource absorption; (2) A variety of underground resources may have an impact on root characteristics. In general, compared with LES, there are still many uncertainties in RES research. Therefore, by summarizing the research methods and research progress of LES, this paper points out the research problems related to RES and the possible research directions in the future, which is of reference significance for the subsequent research. It is also emphasized that the study of leaf economic spectrum and root economic spectrum is helpful for us to construct the whole plant economic spectrum, and it is of great significance to further study the individual survival strategy, plant community ecology and ecosystem function of the whole plant.
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