石羊河流域中下游地区退耕保育生态信息系统开发

Development of ecological information system of returning farmland for conservation in middle and lower reaches of Shiyang River Basin

石羊河流域中下游地区—武威市凉州区和民勤县是水资源严重短缺和生态危机最为严重的地区之一,实施退耕保育工程是恢复该地区生态环境的重要举措。然而,该地区耕地分散度高、地块数量大,给退耕保育的管理工作带来巨大的困难,亟需开发高效快捷的生态信息管理系统。该研究以实地测量数据为基本数据库、资源二号卫星影像资料为辅助校正,采用ArcGIS二次开发技术,通过MO2.4组件和VB6.0语言相结合,建立该地区退耕保育生态信息统计查询系统。该系统通过加载全部2190个地块的属性,实现对不同空间尺度、不同行政单元和不同年份退耕保育面积及属性进行实时、快捷查询和有效管理。该系统的建立为今后该地区高效动态实时管理提供了快捷、便利的生态信息平台和技术支持。

The area of Liangzhou County and Minqin County which located at middle and lower reaches of Shiyang River Basin is one of the areas with the most severe water shortage and ecological crisis in China.The program of returning farmland for conservation is widely recognized as a critical harnessing measure to recover local ecological environment.Nevertheless, high dispersion and large quantity of cropland in this area bring about enormous difficulty to the management of returning farmland for conservation.It is urgent to develop an efficient and prompt ecological information management system.In this study,the ecological information statistical search system of returning land for maintenance was constructed,using field survey data as basic database,and Resource-2 satellite images as additional calibration with secondary ArcGIS reconstruction technique and through combing MO2.4 module and VB6.0 language.Through loading field data of 2190 fields,it could serve to promptly search and effectively manage the sizes and characters of returning lands for ecological restoration at different spatial scales,according to different administrative units and different years.And it also could function to efficiently monitor and manage the areas properties（reporting area,re-farming area and measuring area）temporarily and spatially.This system could provide efficient ecological information platform and technique bolster for future timing dynamic management practice in this region.