论文部分内容阅读
渭干河-库车河三角洲绿洲是新疆的棉花主要生产区域之一,准确掌握该区种棉面积及空间分布情况,对新疆棉田的优化布局和棉花产业的可持续发展具有重要意义。本文利用TM遥感影像及野外调查数据,建立研究区典型地物类型解译标志,通过遥感分类确定了渭-库绿洲种棉区域范围。结果显示,研究区棉花主要集中分布于西南和南边沿塔里木河北边的新开垦地,零星分部于中部和北部。遥感监测得到的研究区棉花总面积为155210 hm2,2011年统计面积为147493 hm2,棉花面积信息提取总精度为94.77%;库车县、沙雅县、新和县的棉花面积遥感提取精度分别为92.16%、97.83%和93.19%。研究表明,利用TM遥感影像并结合野外调查是区域尺度快速提取棉花种植面积信息的有效手段。
The Weigan-Kuqa Delta is one of the major cotton producing areas in Xinjiang. Accurately understanding the area and spatial distribution of cotton in this area is of great significance for the optimal layout of cotton fields in Xinjiang and the sustainable development of the cotton industry. In this paper, TM remote sensing images and field survey data were used to establish the interpretations of typical landform types in the study area, and the range of cotton-growing areas in Wei-Kui oasis was determined by remote sensing classification. The results showed that cotton in the study area mainly concentrated in the newly reclaimed land along the northwest and the north of the Tarim River in the south and sporadic subdivisions in the central and northern parts. The total cotton area in the study area obtained by remote sensing monitoring was 155210 hm2, and the total sampling accuracy was 147493 hm2 in 2011. The total accuracy of cotton area information extraction was 94.77%. The remote sensing extraction accuracy of cotton area in Kuche County, Shaya County and Xinhe County were 92.16%, 97.83% and 93.19%. Research shows that the use of TM remote sensing images combined with field surveys is an effective measure to quickly extract cotton acreage information on a regional scale.