Wang Xiao, Liang Si-Wei, Tian Yi-Jia, Liu Xiao-Tong, Liang Wen-Ju, Zhang Xiao-Ke
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
University of Chinese Academy of Sciences, Beijing 100049, China.
Ying Yong Sheng Tai Xue Bao. 2023 Oct;34(10):2861-2870. doi: 10.13287/j.1001-9332.202310.013.
Stable isotope technique is important for understanding the structure and function of soil food web, which is considered as a belowground black box. We reviewed typical application cases of stable isotope techniques in the research of soil food webs, including to determine food sources and feeding preferences of soil fauna by using isotopes, and to analyze the trophic structure of soil food webs through isotope fractionation effects during the process of feeding and nutrient sequestration by soil fauna. Additionally, stable isotope techniques could reveal the role of soil biota at different trophic levels within soil food web in ecosystem matter and energy flow, which favored to carry out accurate and efficient research on the contribution of soil food webs to soil carbon and nitrogen cycling process and the corresponding influence mechanism. We further put forward the limitations of current stable isotope techniques and the future development directions.
稳定同位素技术对于理解土壤食物网的结构和功能非常重要，土壤食物网被视为一个地下黑箱。我们回顾了稳定同位素技术在土壤食物网研究中的典型应用案例，包括利用同位素确定土壤动物的食物来源和摄食偏好，以及通过土壤动物摄食和养分固存过程中的同位素分馏效应分析土壤食物网的营养结构。此外，稳定同位素技术可以揭示土壤食物网中不同营养级的土壤生物群落在生态系统物质和能量流动中的作用，这有助于对土壤食物网对土壤碳氮循环过程的贡献及其相应影响机制进行准确而高效的研究。我们进一步提出了当前稳定同位素技术的局限性和未来发展方向。
