适生植物及其无机碳利用对喀斯特环境的生理生态响应机制研究

批准号:
32001101
项目类别:
青年科学基金项目
资助金额:
24.0 万元
负责人:
杭红涛
依托单位:
学科分类:
生理生态学
结题年份:
2023
批准年份:
2020
项目状态:
已结题
项目参与者:
杭红涛
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中文摘要
喀斯特环境具有异质性和脆弱性,生长在该区的植物具有多种适应性机制,其中无机碳利用机制是喀斯特适生植物能够在喀斯特逆境中生存的重要机制。研究植物在喀斯特逆境下无机碳调控利用策略,对于喀斯特生态修复中植物物种选择和优化配置资源具有重要作用。本研究以喀斯特区土壤理化性质为基础;室内模拟喀斯特环境培养植物为主线;建立不同喀斯特环境下典型适生植物和非适生植物对外源无机碳的利用能力与植物的生理生化等指标的关系,量化不同植物在不同喀斯特环境下无机碳利用途径和碳同化能力,明确不同植物在不同喀斯特环境下的生物量积累和抗性指标等含量的变化规律,辨识不同植物在不同喀斯特环境下的关键酶基因表达情况,揭示不同植物关键酶基因差异表达调控无机碳利用来适应喀斯特逆境的协调作用机制,进而评价喀斯特逆境下适生植物对无机碳调控利用的生理生态响应分子机制,为推进适生植物治理恢复喀斯特脆弱环境的生态调控技术增添理论依据。
英文摘要
The karst environment is heterogeneous and fragile. Plants growing in this area have a variety of adaptable mechanisms. The mechanism of inorganic carbon utilization is an important mechanism for the karst adaptable plant species to survive in karst adversity. It is important for plant species selection and optimal allocation of resources in karst ecological restoration to study the strategies of regulating and utilizing inorganic carbon in plants under karst adversity. This study is based on the physical and chemical properties of soil in the karst area, and based on the main line of the cultivation of plants to simulate the karst environment, established the relationship between the utilization of external inorganic carbon by typical adaptable plant species and non-adaptable plant species in different karst environments and the physiological and biochemical indicators of plants, to quantify the inorganic carbon utilization pathways and carbon assimilation capabilities of different plant species in different karst environments, to clarify the changes in the biomass accumulation and resistance indicators of different plant species in different karst environments, and to identify the key enzyme gene expressions of different plant species under different karst environments, revealing the coordination mechanism that the differential key enzyme gene expression in different plant species is to regulate inorganic carbon utilization to adapt to karst adversity, and assessing the molecular mechanism of the inorganic carbon regulation and utilization of physiological and ecological responses of adaptable plant species in karst environment, aimed at providing theory support for ecological control of technology that governance and restoration of fragile karst environment used by adaptable plant species.
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DOI:10.15244/pjoes/146557
发表时间:2022-01-01
期刊:POLISH JOURNAL OF ENVIRONMENTAL STUDIES
影响因子:1.8
作者:Hang, Hongtao
通讯作者:Hang, Hongtao
国内基金
海外基金
