摘要
内蒙古是我国北方的重要粮仓,而玉米是主要粮食作物之一,及时了解玉米播种面积、产量及长势,对我国粮食的安全、价格调控和进出口等关系影响重大.本文运用TM数据对2002、2006、2010和2014年四期科尔沁左翼中旗的玉米种植面积进行监测.由非监督分类ISODATA算法进行分类,得到2002、2006、2010和2014年玉米地面积分别为627.56 km^2,691.02 km^2,848.35 km^2,1251.39 km^2,玉米种植面积呈显著增长趋势(R2=0.81,p<0.05).根据时间序列关系,位置精度分别达到93.6%、93.0%、91.4%、87.27%,总量精度分别达到94.64%、93.32%、92.58%和88.36%.截止2014年,玉米农作物播种主要分布在科左中旗(保康镇)、花胡硕苏木、腰林毛都苏木、架玛吐镇、舍伯吐镇、白兴吐苏木、希伯花苏木、花吐古拉苏木、玛拉沁苏木、巴彦塔拉农场和敖包苏木等11个乡镇苏木.同时得到,2002~2006年间希伯花苏木的玉米种面积增长最快,增加了63.25km^2,2006~2010年间乌斯吐苏木玉米面积增长最快,增加了20.79 km^2,2010~2014年间增长最快的是巴彦塔拉农场,增加了76.57km^2,2002~2014年间变化最大的是巴彦塔拉农场,12年间增长了83.86km^2.
Inner Mongolia was an important granary in the north of China. Com was one of the main grain crops. It was very important to understand the sown area,yield and growth of com. It was of great significance to Chinas grain security,price regulation and import and export. In this paper,we used TM remote sensing image data to monitor the com planting area in Horqin Left wing Banner in four periods of 2002,2006,2010 and 2014 years. We classified the image data by the unsupervised classification ISODATA algorithm, and we further got corn planting area were 627.56 km2,691.02 km^2 ,848. 35 km^2 ,1251.39 k^m2 in 2002,2006,2010 and 2014 years respectively. Com planting area showed a significant growth trend （ R2 = 0 . 9 4 ,p 〈0. 05） . According to the law of time series, the position accuracy of com planting was 93.6% ,93. 0% ,91.4% and 87.27% respectively, and the total preci-sion reached 94. 64% ,93. 32% ,92. 58% and 88. 36% respectively.
出处
《阴山学刊（自然科学版）》
2017年第2期75-80,共6页
Yinshan Academic Journal(Natural Science Edition)
基金
基金项目:中国农业科学院创新工程草原非生物灾害防灾减灾团队(CAAS-ASTIP-IGR2015-0406)
