洞庭湖区堤垸1949-2013空间分布数据集

洞庭湖区长期的泥沙淤积、围垸垦殖，形成了特有的堤垸分布形态。堤垸的消长也是洞庭湖区人地系统变化、环境变迁和土地利用转换的直接见证。本数据集共完成4期（1949、1998、2008、2013）洞庭湖区的堤垸分布矢量图。该数据的获取主要基于两种方法，一是面向对象的堤垸信息遥感解译方法，二是历史堤垸分布的地图矢量化。在数据制作过程中，进行了实地验证，以确保数据精度。本数据集预期能够为该区域生态系统、环境管理、人地关系等研究和管理决策提供支撑。

Over the long term, sediment deposition and polder reclamation in the Dongting Lake Area have shaped the unique distribution pattern of polders. The fluctuations and changes of polders also serve as direct witnesses to human-land system changes, environmental alterations, and land use conversions in the region. This dataset includes four phases of vector maps of polder distributions in the Dongting Lake Area, covering the years 1949, 1998, 2008, and 2013. It was primarily developed using two methods: first, the object-oriented remote sensing interpretation approach for extracting polder information; second, map digitization of historical polder distribution maps. Field validation was conducted during the data production process to ensure the accuracy of the dataset. This dataset is expected to provide support for research on regional ecosystems, environmental management, human-land relationships, as well as management decision-making.