根系构型(Root system architecture,RSA)是指植物根系在土壤中的空间分布结构和延展形态。根系构型不仅决定了植物获取水分和养分等资源的能力,还影响到根系其他功能的发挥,对植物整体的健康状况起着决定性作用。研究植物根系构型有助...根系构型(Root system architecture,RSA)是指植物根系在土壤中的空间分布结构和延展形态。根系构型不仅决定了植物获取水分和养分等资源的能力,还影响到根系其他功能的发挥,对植物整体的健康状况起着决定性作用。研究植物根系构型有助于更好地理解植物的水肥吸收规律、根系与地上部之间的关系,同时对于了解植物的生理健康和生态功能也具有重要意义。因此,本文重点对其形态、功能、可塑性和研究方法等方面的研究进行了综述。文中首先概述了根系的基本结构、生理和生态功能。然后从土壤水分、养分、温度、通气等方面总结了影响根系构型的土壤因素。之后,详细描述了根系构型的研究方法,包括传统挖掘法、二维形态观察法和三维图像重建法等。最后,在此基础上,探讨了未来的发展方向,以期为研究者在该领域进一步开展研究工作提供理论基础。展开更多
In order to investigate the differences of macropores vertical distribution under different surface plants, and to assess the influences of root systems, organic matter and texture on macropore flow paths, two dye tra...In order to investigate the differences of macropores vertical distribution under different surface plants, and to assess the influences of root systems, organic matter and texture on macropore flow paths, two dye tracer infiltration experiments were performed in slopes under two different plants(Campylotropis polyantha(Franch.) Schindl vs. Cynodon dactylon(Linn.) Pers). Dye tracer infiltration experiments with field observations and measurements of soil properties were combined. Results show that the discrepancy in macropores distribution between two slopes under different plants is significant. Root systems have significant effects on macropore flow paths distribution and the effect become more pronounced as the diameter of roots become larger. Organic matter and stone are important factors to affect macropores distribution. Root-soil interface, inter-aggregate macropore and stone-soil interface are important macropore flow paths in well vegetated slopes.展开更多
基金The Fundamental Research Funds for CAF (CAFYBB2019ZC008)The Research and Development Funds for RIFPI “Empirical Study on the Effect of Forest Activities on Decompression”(5000103-6019)。
文摘根系构型(Root system architecture,RSA)是指植物根系在土壤中的空间分布结构和延展形态。根系构型不仅决定了植物获取水分和养分等资源的能力,还影响到根系其他功能的发挥,对植物整体的健康状况起着决定性作用。研究植物根系构型有助于更好地理解植物的水肥吸收规律、根系与地上部之间的关系,同时对于了解植物的生理健康和生态功能也具有重要意义。因此,本文重点对其形态、功能、可塑性和研究方法等方面的研究进行了综述。文中首先概述了根系的基本结构、生理和生态功能。然后从土壤水分、养分、温度、通气等方面总结了影响根系构型的土壤因素。之后,详细描述了根系构型的研究方法,包括传统挖掘法、二维形态观察法和三维图像重建法等。最后,在此基础上,探讨了未来的发展方向,以期为研究者在该领域进一步开展研究工作提供理论基础。
基金Project(U1502232)supported by the National Natural Science Foundation of China-Yunan Joint FundProject(KKSY201406009)supported by the Natural Science Foundation of Kunming University of Science and Technology,ChinaProject(2014FD007)supported by the Natural Science Foundation of Yunnan Province,China
文摘In order to investigate the differences of macropores vertical distribution under different surface plants, and to assess the influences of root systems, organic matter and texture on macropore flow paths, two dye tracer infiltration experiments were performed in slopes under two different plants(Campylotropis polyantha(Franch.) Schindl vs. Cynodon dactylon(Linn.) Pers). Dye tracer infiltration experiments with field observations and measurements of soil properties were combined. Results show that the discrepancy in macropores distribution between two slopes under different plants is significant. Root systems have significant effects on macropore flow paths distribution and the effect become more pronounced as the diameter of roots become larger. Organic matter and stone are important factors to affect macropores distribution. Root-soil interface, inter-aggregate macropore and stone-soil interface are important macropore flow paths in well vegetated slopes.
