南四湖流域产水量空间格局与驱动因素分析

发布时间：2018-07-11 21:02

本文选题：生态系统服务 + 产水功能　；参考：《自然资源学报》2017年04期

【摘要】：流域生态系统产水服务功能的空间化和定量化评估,对流域水资源管理、优化配置以及提高流域水生态保护效率具有重要意义。以山东省南四湖流域为研究对象,基于1990—2013年土地利用、降水、蒸散以及土壤属性等基础地理数据,以InVEST模型为基础,评估和模拟南四湖流域近25 a的产水量,并采用ArcGIS分析产水量的空间分布格局以及变化趋势,探讨了降水、地形等自然地理要素以及人口、土地利用和国内生产总值(GDP)等社会经济因素与产水量空间格局动态变化之间的关系,并在此基础上划分出南四湖流域生态系统产水功能区。研究结果表明:流域产水量在空间格局上呈现出由东向西递减的趋势,东部、东北部等山区、丘陵地区产水量高,西部平原地区产水相对较低;受自然地理要素影响,流域产水量空间分布与社会经济发展水平即GDP、人口密度的空间分布格局有较大差异。近25 a来,流域产水量呈现减少趋势,且产水量峰值区域由东北部向偏南地区转移,最低值区由西部向中部地区转移。降水、海拔和坡度等地理环境与产水量的空间变化呈显著正相关,其中降水量的相关程度最强;人口、GDP等社会经济数据与产水量变化也呈显著正相关,主要原因在于城市化的发展,城市建设用地等不透水层增加,促进了流域产水量。研究结果可以为流域水资源政策制定以及社会经济发展规划等宏观决策提供科学支撑。
[Abstract]:The spatial and quantitative evaluation of the water supply service function of the watershed ecosystem is of great significance to the management of water resources in the basin, the optimal allocation and the improvement of the efficiency of water ecological protection in the river basin. Based on the land use, precipitation, evapotranspiration and soil properties of the Nansi Lake Basin in Shandong province from 1990 to 2013, the basic geographic data, such as the land use, precipitation, evapotranspiration and soil properties, are based on InVES Based on the T model, the water yield of nearly 25 A in the Nansi Lake Basin was evaluated and simulated, and the spatial distribution pattern and change trend of the water yield were analyzed by ArcGIS. The dynamic changes of the social and economic factors such as the precipitation, the topography and other social and economic factors such as the land use and the gross domestic product (GDP) and the spatial pattern of water production were discussed. The results show that the water yield of the river basin shows a trend of decreasing from east to West in the spatial pattern, in the East, in the northeast, in the hilly area, and in the western plain area, the water yield is relatively low in the western plain area, and the water yield of the river basin is influenced by the natural geographical factors. The spatial distribution of the spatial distribution and the social and economic development level is GDP, the spatial distribution pattern of population density is very different. In the near 25 A, the water yield of the basin shows a decreasing trend, and the peak area of water yield is transferred from the northeast to the south, and the minimum area is transferred from the west to the central region. The change also showed significant positive correlation, among which the correlation of precipitation was the strongest, and the social economic data such as population and GDP were also positively correlated with the change of water production. The main reason was the development of urbanization, the increase of the urban construction land and other impermeable layers, which promoted the drainage of water resources in the basin and the social economy. Macro decisions, such as the economic development plan, provide scientific support.
【作者单位】：曲阜师范大学地理与旅游学院/南四湖湿地生态与环境保护山东省高校重点实验室;
【基金】：教育部人文社科项目(14YJCZH138) 国家自然科学基金面上项目(41471389) 山东省高校科技计划(J13LF02)~~
【分类号】：TV213.4

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