黄河三角洲人地关系协调度时空演变及其驱动机制

黄河三角洲是黄河流域典型的生态环境脆弱区，在黄河流域生态保护与高质量发展的要求下，定量评价区域人地关系对黄河三角洲生态环境修复与经济发展有重要意义。基于1998—2018年遥感影像数据，运用耦合协调度模型、地理探测器等方法，分析了20年间黄河三角洲人地协调度时空演变特征，探讨了人地协调度空间演变特征及其驱动机制。结果表明：(1) 1998—2018年黄河三角洲人地协调度大致呈由内陆向沿海逐渐递减的空间分布特征，人地关系失调区域面积不断下降，协调区域面积不断上升，人地关系逐步缓和。主要协调水平为良好协调，区域面积达2 847.57 km²;各乡镇人地协调度等级呈自黄河流域向两岸地区递减的特征，各乡镇协调水平不断上升且差异显著但逐步缩小，极差值缩减至0.24,六合镇、胜坨镇、垦利街道和永安镇协调水平增长最为显著，分别上升了0.27,0.26,0.25,0.24;(2)因子探测器结果表明人均水资源、年均降水量、植被覆盖率与人口数量对人地协调度的解释力较高，经济发展水平、自然资源禀赋与自然环境特征在人地协调演进过程中的重要程度逐步上升；(3)研究时段内各因子间交互作用对人...

Spatiotemporal Evolution and Driving Mechanism of Human-Environment Coordination in the Yellow River Delta

The Yellow River Delta is a typical ecological environmental fragile area of the Yellow River Basin. Under the requirements of ecological protection and high-quality development strategy, quantitatively evaluating human-environmental relationship is of great significance for ecological environment repairment and economic development of the Yellow River Delta. Based on the remote sensing imagines of the Yellow River Delta from 1998—2018 and coordination model and Geo-detector, the temporal and spatial evolution of human-environment coordination in the Yellow River Delta in the past 20 years was analyzed, and the driving mechanism of human-environment coordination was exploed. The results showed that:(1)from 1998—2018, the distribution pattern of human-environment coordination in the Yellow River Delta showed high level inland and low level in the coastal; the uncoordinated area was constantly decreasing and the coordinated area was still rising; the relationship between human and environment was eased; the main characteristic of human-environmental relationship was good coordination, and area was 2 847.57 km²; spatial distribution pattern in different counties showed difference and the coordination level was rising in regional and county scale; the extreme difference of different counties was decreasing to 0.24; coordinated level of Liuhe Town, Shengtuo Town, Kenli Street and Yongan Town were increasing significantly, and rose by 0.27,0.26,0.25,0.24, respectively;(2)the results of driving factors indicated that the average water resource, average annual precipitation, vegetation coverage and population had high interpretation; importance of economic development level, natural resources and natural environment characteristics in the evolution of human-environment coordination increased;(3)during the study period, the contributon of interactions of each factor to human-environment coordination had been increasing; the interactions of per capita water resources, per capita construction land area and DEM with other partial factors gradually changed into enhancement effect.