基于RS与GIS的屯溪区林地保护利用规划研究

The Application of RS and GIS in Forest Land Protection and Utilization Planning of Tunxi District

以安徽省屯溪区2009年SPOT5遥感影像为数据源,以ArcGIS10.0为数据加工与分析平台,建立不同林地类型遥感影像解析标志,进行林地小班界矢量化数据采集,生成.Shp格式小班图形数据,与小班属性数据链接,形成屯溪区林地小班图形与属性数据库,并对林地结构、林地保护等级、林地功能分区及林地保护利用方向进行了分析。结果表明:屯溪区林地面积5 364.35 hm2,其中:有林地面积4 451.43 hm2,疏林地面积13.86 hm2,灌木林地面积536.44 hm2,未成林地面积327.88 hm2,苗圃地面积10.93 hm2,宜林地面积19.14hm2,其他林业辅助生产用地4.67 hm2,以有林地居多,占林地面积的82.98%;林地保护等级共有3级,各等级林地面积由大到小依次是Ⅳ级林地面积>Ⅲ级林地面积>Ⅱ级林地面积;全区林地分为4个主体功能区,包括北部生态公益林区、西部与南部休闲游憩观光风景林区、东部重点旅游风景林区和东南部城郊防护林区。该研究为制定屯溪区林地1张图、实现林地资源数字化管理奠定了基础。

Based on the SPOT5 remote sensing image, acquired in 2009 covering Tunxi District of Anhui Province and ArcGIS10.0, the image interpretation marks were established to collect data of sub-compartments＇ boundaries and attributes. Furthermore, the forest-land structure and protection status were assessed, followed by the analyses of their functional zonation, protection and utilization orientations. The results showed that the forestland area of Tunxi District is 5 364.35 hm2 , including closed forest land 4 451.43 hm2 , sparse forest land 13.86 hm2 , shrub forest- land 536.44 hm2 , immature forestland 327.88 hm2 , nursery 10.93 hm2, land suitable for afforestation 19.14 hm2, other land for forestry produc-tion 4.67 hm2. The majority of forestland is closed forest land, accounting for 82.98% of the total forestland area. Forest protection level was di- vided into 3 levels. The forestiand area of different protection level was Ⅳ 〉 Ⅲ〉 Ⅱ level. Forest land was divided into four main functional areas in Txunxi District, including the ecological public welfare forest zone in north, the recreational tourism scenic area in west and south, the key tourist scenic forest zone in east, the outskirts protection forest zone in southeast. The paper provided the foundations for assembling all types of forests in Tunxi District into one map and realizing the computerized management of forestland resources.