基于改进三维生态足迹模型的洞庭湖区生态可持续时空演化研究

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 基于改进三维生态足迹模型的洞庭湖区生态可持续时空演化研究 DOI: 10.5846/stxb202106161595 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 国家社会科学基金项目（15BJY051）；湖南省水利科技项目（2015-254-19）；长沙理工大学水利工程学院研究生科研创新项目（2020-05） Temporal and spatial evolution of ecological sustainability in Dongting Lake area based on the improved three-dimensional ecological footprint model Author: Affiliation: Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:洞庭湖是长江流域重要的调蓄湖泊，也是中国重要的农产品主产区。科学评估洞庭湖区生态可持续状态，揭示其时空演化特征，对探究其生态可持续影响因素与作用机理，降低生态赤字具有重要意义。基于碳足迹与生态足迹理论构建了改进的三维生态足迹模型，填补了化石能源无法核算生态承载力的问题，同时调整了不同土地利用类型的参数因子。在对洞庭湖区25个区县进行可持续发展的动态评价分析中，计算了2000-2019年生态赤字、足迹广度与深度的时空分布特征。研究结果表明：（1）近20年来洞庭湖区的人均生态足迹增长速度远高于人均生态承载力，致使人均生态赤字在时间维度上不断增大，空间维度上呈湖滨向周边地区扩散的趋势；（2）洞庭湖区除林地之外的土地利用类型均存在自然资本存量的消耗，且表现为高生态赤字；（3）三次产业结构的分配、土地利用的变化、居民对生活质量的提高以及生态保护政策的有效实施等均会对洞庭湖区的可持续发展产生较大影响；（4）改进后的化石能源账户相较于传统账户的计算方法更能反映真实的碳排量与碳吸收量。研究以期为洞庭湖区土地利用、生态保护以及促进社会经济可持续发展提供科学参考。 Abstract:Dongting Lake is not only an important regulation and storage lake in the Yangtze River Basin, but also a major agricultural product producing area in China. We evaluated the ecological sustainable development status of Dongting Lake area scientifically and revealed the characteristics of temporal and spatial evolution of the region, which could be used to explore the influencing factors and mechanism of the ecological sustainability of the Dongting Lake area. At the same time, this study reduced the ecological deficit of Dongting Lake area. The improvement of three-dimensional ecological footprint was mainly based on carbon footprint calculation method and ecological footprint theory, which solved the question that ecological carrying capacity cannot be calculated in the fossil energy account. In addition, the equilibrium factor and yield factor of Dongting Lake area were adjusted according to the concept of "provincial hectare". Finally, the dynamic evaluation and the analysis of sustainable development of 25 counties in Dongting Lake Ecological Economic Zone, the per capita ecological deficit, the breadth and depth of per capita ecological footprint from 2000 to 2019 were calculated. The main results could be concluded as follows:(1) During the 20-year study period, the per capita ecological footprint in Dongting Lake area increased faster than the per capita ecological carrying capacity, which caused the per capita ecological deficit increased in the temporal dimension. Meanwhile, the spatial dimension showed the trend of diffusion from the center to the periphery of Dongting Lake. (2) Among all land use types in Dongting Lake area, the forest land wasthe only account of ecological surplus. All accounts of the cultivated land, grassland, water area, construction land and energy displayed high ecological deficit. (3) The distribution of three industrial structures, the change of land use, the improvement of residents' quality of life and ecological environment policies were important influencing factors in the study area. (4) Compared with the traditionally ecological footprint calculation method, the carbon emission and carbon absorption calculated by the improved three-dimensional ecological footprint model are closer to the real value. The research was expected to provide scientific reference for land use, ecological protection, promoting social and economic sustainable development in Dongting Lake area. 参考文献 相似文献 引证文献