在当前全球变暖的趋势下,农作物长势遥感监测一直备受关注。及时准确地掌握各种农作物种植面积和空间分布,对于制定农业政策,保障粮食安全具有重要意义。尤其是东北地区,作为全国重要的商品粮生产基地,在有关农业遥感系统中,分析农作物中的种质结构是极其关键的一步。由于农作物种植结构是一种基础数据,它对于提高耕地的利用效率,保障粮食安全,优化东北地区农业种植结构具有重大意义。本文选取了东北地区黑龙江省饶河县作为研究区域,以2000年至2020年可利用的遥感影像为数据源,选取主要农作物玉米、水稻、大豆作为研究对象,对农作物种植结构的时空变化进行分析研究。Under the current trend of global warming, remote sensing monitoring of crop growth has been attracting much attention. It is of great significance to grasp the planting area and spatial distribution of various crops in a timely and accurate manner for formulating agricultural policies and ensuring food security. In particular, the Northeast region, as an important commercial grain production base in the country, is an extremely critical step in the relevant agricultural remote sensing system to analyze the planting structure of crops. Since crop planting structure is a kind of basic data, it is of great significance to improve the utilization efficiency of cultivated land, ensure food security, and optimize the agricultural planting structure in Northeast China. In this paper, we selected Raohe County, Heilongjiang Province in Northeast China as the research field, and used the available remote sensing images from 2000 to 2020 as the data source, and selected the main crops maize, rice, and soybean as the research objects to analyze and study the temporal and spatial changes of crop planting structure.
随着社会化进程的加快,产业结构不断得到优化与重构,土地利用问题已成为研究世界环境变迁、人地可持续发展的关键研究课题。土地结构变化与地域经济发展的影响密切相关,二者相辅相成、彼此制约。本文利用对沈阳市2000、2010年landsat4-5 TM影像、2020年landsat8 OLI数据影像为基础,处理得到土地利用转移矩阵、沈阳市建成区面积变化图等相关数据,并结合沈阳市统计资料中相关区域经济的评价指标,从社会经济要素角度分析沈阳市城市扩展与土地利用变化的主要驱动力,进而探究土地利用与区域经济的相互关系。最后研究结果表明:沈阳市2000~2020年间建成区面积变化速度前10年为18.2 km2,后10年为16.8 km2,城市面积扩展迅速。沈阳市农业用地面积与比重下降明显,城市建筑用地面积逐渐增加,以农业用地向建筑用地转化最为显著。经济增长、产业结构调整与人口的增长等相关区域经济因子是沈阳市城市扩展与土地利用结构变化的主要驱动力,土地利用也制约着其区域经济的发展。With the acceleration of the socialization process and the continuous optimization and restructuring of the industrial structure, the land use problem has become a key research topic in the study of the world’s environmental changes and the sustainable development of people and land. Changes in land structure are closely related to the impact of regional economic development, and the two complement and constrain each other. In this paper, based on the landsat4-5 TM images of Shenyang city in 2000 and 2010, and landsat8 OLI data images in 2020, we processed relevant data such as the land use transfer matrix and the area change map of the built-up area of Shenyang city, and combined them with the evaluation indexes of the relevant regional economy in the statistics of Shenyang city. The main driving force of land use changes in Shenyang city is analyzed from the perspective of socio
