基于地表覆盖/土地利用数据的沁河源区生态保护红线边界处理

边界处理是指借助地理信息系统软件，将生态保护红线从栅格形式的生态评估结果落实到具有明确边界的地块上，也称为红线的“落图”过程，是生态保护红线划定的重要流程，也是红线精准落地和有效管控的必要条件。本文以沁河源区为例，利用地理信息系统软件，基于地表覆盖、土地利用两种数据分别对生态功能极重要区红线进行落图。结果表明：两种数据均适用于红线边界处理，并且联合应用时处理结果更佳；沁河源区生态功能极重要区栅格面积为877.87 km²，联合应用两种数据处理后的红线矢量面积为877.73 km²，占研究区总面积的64.51%；研究结果可为生态功能重要区域生态保护红线边界的优化、调整提供参考。

Boundary treatment of Eco-redline of Qin River headwater region based on land cover and land use data

Boundary treatment is to change ecological protection redline (eco-redline) from ecological assessment result of a grid form to specific land with a clear boundary by means of GIS software, which also can be called "mapping". It is not only an important process in the eco-redline delineation but also a condition for precise boundary settlement and effective control of the eco-redline. Taking Qin River headwater region as an example, this paper uses land cover classification data and land use classification data to treat eco-redline boundary of the assessed ecologically important areas respectively. It was showed that either kind of data is suitable for this work, and the mapping result is better when the two types of data were used together. The grid area of the study area with extremely important eco-function is 877.87 km², and the area of corresponding eco-redlines after boundary treatment based on two data is 877.73 km², accounting for 64.51% of the total area of the study area. The study results can be referred in the optimization and adjustment of eco-redline boundary in areas where ecological function are important.