论文部分内容阅读
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 is an important granary in the north of our country, and corn is one of the main food crops, so it is important to know the sown area, yield and growth of maize in time and have a great impact on the security, price regulation and import and export of grain in our country.This paper uses TM data to analyze the 2002, 2006, 2010 and 2014. According to the non-supervised ISODATA classification, the area of maize in 2002, 2006, 2010 and 2014 was 627.56 km ~ 2,691.02 km ~ 2,848.35 km, respectively. ~ 2,1251.39 km ~ 2, the corn acreage increased significantly (R2 = 0.81, p <0.05). According to the time series, the position accuracy reached 93.6%, 93.0%, 91.4% and 87.27% Up to 94.64%, 93.32%, 92.58% and 88.36% respectively. By the end of 2014, sowing of maize crops was mainly distributed in Kezuozhong Banner (Baokang Town), Huhuo Shuhe, Bo Tuo town, Baixing spit heather, He Bohua hematoxylin, flower tuugula hematoxylin, Maqqin hematoxylin, bayantala farm and obo hematoxylin 11 towns and villages such as Hemu. At the same time, In 2006, Hebrew was the most widely grown maize crop Increased by 63.25km ~ 2,2006 ~ 2010 The area of Ust-spruce maize increased fastest with an increase of 20.79 km ~ 2. The fastest growing area from 2010 to 2014 was Bayantala Farm, an increase of 76.57km ~ 2, Bayantala Farm, the most significant change from 2002 to 2014, increased by 83.86km ~ 2 in 12 years.