对农村居民点用地进行合理规划对于平衡城乡用地矛盾具有重要意义。以张家界市为例,首先运用地理信息系统(geographic information system,GIS)分析方法分析农村居民点空间分异特征;其次从区位交通、自然环境、社会经济三个方面选取了...对农村居民点用地进行合理规划对于平衡城乡用地矛盾具有重要意义。以张家界市为例,首先运用地理信息系统(geographic information system,GIS)分析方法分析农村居民点空间分异特征;其次从区位交通、自然环境、社会经济三个方面选取了与公路、河流、学校、医院的距离、高程、温度和降水等14个指标,运用未来土地利用模拟(future land-use simulation,FLUS)模型在自然发展情景下预测2025年、2030年和2035年土地利用状况;最后提取2030年农村居民点用地数据,基于地理模拟与优化系统(geographical simulation and optimization systems,GeoSOS)平台运用蚁群优化算法(ant colony optimization,ACO)进行空间布局优化,采用景观格局指数量化分析优化前后变化并给出建议。研究发现:①张家界市农村居民点近几年用地增加但聚集度减小,布局总体表现出“中东部密,西北部疏”的分异特征,破碎化明显,需要进行科学合理规划;②农村居民点的分布密度分别为永定区>慈利县>武陵源区>桑植县,布局模式按基本形态可划分为团状、带状、零散和组团模式;③FLUS模型预测2025年、2030年和2035年农村居民点规模通过精度验证,在2025—2035年间由扩张趋于平稳,局部密度增长但整体密度变化不大,形状与其他类型用地相比较为简单;④优化后农村居民点用地整体布局往地势平坦区域聚集,形态表现为“整体聚集、局部分散”,该研究可为区域农村用地布局规划提供技术支撑。展开更多
This article explores the progress of the healthcare sector in the Kingdom of Saudi Arabia over the past two decades. Through continuous coordination and efforts to improve the quality and quantity of health services,...This article explores the progress of the healthcare sector in the Kingdom of Saudi Arabia over the past two decades. Through continuous coordination and efforts to improve the quality and quantity of health services, the government has significantly increased the availability of health facilities across the nation. This steady growth has allowed the country to maintain an upward trajectory in healthcare sector development in comparison to other countries. The Saudi Arabian government is preparing to implement Accountable Care Organizations (ACOs) as part of their “Vision 2030.” By aligning with the goals of this visionary roadmap, the government aims to address the challenges faced by the existing healthcare system under the Ministry of Health (MOH). This strategic move is expected to transform the healthcare sector, positioning Saudi Arabia at par with its international counterparts and bolstering its economic competitiveness. This article highlights the historical context of Saudi Arabia’s healthcare system, and compares it with the forthcoming ACO implementation under “Vision 2030.” This information provides valuable insights into the trajectory of the country’s healthcare landscape and the potential impact of ACOs in shaping the Kingdom’s future in healthcare and economic development overall.展开更多
文摘This article explores the progress of the healthcare sector in the Kingdom of Saudi Arabia over the past two decades. Through continuous coordination and efforts to improve the quality and quantity of health services, the government has significantly increased the availability of health facilities across the nation. This steady growth has allowed the country to maintain an upward trajectory in healthcare sector development in comparison to other countries. The Saudi Arabian government is preparing to implement Accountable Care Organizations (ACOs) as part of their “Vision 2030.” By aligning with the goals of this visionary roadmap, the government aims to address the challenges faced by the existing healthcare system under the Ministry of Health (MOH). This strategic move is expected to transform the healthcare sector, positioning Saudi Arabia at par with its international counterparts and bolstering its economic competitiveness. This article highlights the historical context of Saudi Arabia’s healthcare system, and compares it with the forthcoming ACO implementation under “Vision 2030.” This information provides valuable insights into the trajectory of the country’s healthcare landscape and the potential impact of ACOs in shaping the Kingdom’s future in healthcare and economic development overall.
