贡嘎山营养元素和重金属的生物地球化学研究现状与展望

发布时间：2018-03-15 07:30

本文选题：营养元素　切入点：重金属　出处：《山地学报》2017年05期 　论文类型：期刊论文

【摘要】：本文对贡嘎山地区营养元素和重金属的生物地球化学循环的研究现状进行了总结,在此基础上探讨了未来须关注的热点和方向。目前围绕贡嘎山生态系统的碳(C)、氮(N)生物地球化学循环研究主要开展了C和N的分布特征、储量、凋落物中元素的归还与释放等方面的工作;磷(P)的生物地球化学研究包括不同海拔梯度和土壤演替阶段土壤P的形态、生物有效性、迁移转化及其影响因素、成土作用和微生物作用对土壤P的生物有效性的影响等;重金属的生物地球化学研究主要围绕重金属的赋存特征、来源、影响因素和潜在生态风险等方面。未来需要将大气-水-土壤-植物-微生物系统作为一个整体,系统研究养分元素的生物地球化学循环过程和机制以及重金属的迁移转化和关键控制因素,加强各元素生物地球化学循环耦合关系研究,建立多种元素循环的耦合模型,为山地生态安全和生态修复提供理论基础。
[Abstract]:In this paper, the research status of biogeochemical cycle of nutrient elements and heavy metals in Gongga Mountain is summarized. On the basis of this, the hot spots and directions that should be paid attention to in the future are discussed. At present, the distribution characteristics and reserves of C and N are mainly carried out around the biogeochemical cycle of the Gongga Mountain ecosystem. The biogeochemical study of phosphorus (P) includes the morphology, bioavailability, migration and transformation of soil P at different elevation gradients and soil succession stages. The biogeochemical studies of heavy metals mainly focus on the occurrence characteristics and sources of heavy metals. Impact factors and potential ecological risks. In the future, the atmospheric-water-soil-plant-microbial system is needed as a whole, The biogeochemical cycling process and mechanism of nutrient elements, the migration and transformation of heavy metals and the key controlling factors are systematically studied. The coupling relationship of biogeochemical cycles of various elements is studied, and the coupling model of various element cycles is established. To provide theoretical basis for mountain ecological security and ecological restoration.
【作者单位】：中国科学院水利部成都山地灾害与环境研究所山地表生过程与生态调控重点实验室;中国科学院大学;
【基金】：国家自然科学基金(41630751) 中国科学院青年创新促进会人才项目~~
【分类号】：P593

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