三江平原耕地资源变化及其对粮食生产的影响

发布时间：2018-06-28 11:28

本文选题：耕地资源 + 粮食生产　；参考：《中国科学院研究生院（东北地理与农业生态研究所）》2015年硕士论文

【摘要】：耕地资源作为人类赖以生存和发展的基础,承载着人类活动和粮食的生产,也是保障粮食安全的重要条件。三江平原拥有广阔的耕地资源和良好的自然条件,是我国重要的商品粮生产基地,在维持黑龙江省粮食产量供应,保障我国粮食安全中具有重要的地位。本文探究耕地资源的变化对粮食生产的影响效应,目的在于在多数县市出现耕地面积减小的背景下,掌握耕地资源变化对粮食生产的影响,为保障三江平原粮食生产提供依据。文章的主要内容包括以下几个方面:1、三江平原耕地资源变化特征分析。从耕地资源时序变化、空间格局、转移特征等角度分析了27年间耕地资源的变化态势。三江平原耕地资源丰富,增加幅度与速度呈下降趋势,与其他土地利用类型之间不断转化,但整体数量依然不断增加,为三江平原粮食生产提供了保障;耕地资源空间集聚特征明显,在三江平原东北部县域不断的开发、集中,形成了耕地资源的空间格局,决定了三江平原粮食生产的集中区域。2、三江平原粮食生产分析。分析三江平原粮食总产、单产、人均粮食占有量的变化态势,及其在黑龙江省粮食生产中的地位。结果表明,三江平原逐渐形成了以大豆、玉米、水稻为主的粮食生产格局,并在东北部县域形成了粮食生产的空间格局;粮食相对承载了不断提升,形成了“东北强西南弱”的承载力格局,三江平原在黑龙江省粮食供应中的地位不断加强,在保障粮食安全中的地位愈加明显。3、耕地资源变化对粮食生产的影响分析。从重心耦合、相关性分析、粮食生产影响因素分析模型三个方面分析了耕地资源面积变化与粮食生产之间的关系,表明两者之间存在一定的相关性,耕地面积的变化影响着粮食产量的增加、粮食空间的分布,尤其是在耕地面积减小的县域,开始对粮食生产产生负向效应;利用C-D函数、因素贡献率分析方法,探究了耕地追加利用质量对粮食单产的影响;总体上,应加强复种指数、粮作比、粮食单产对粮食生产的影响效应,并从提升耕地资源追加利用质量的角度,强化复种指数、粮作比、耕地质量粮食生产的贡献率,从而弥补耕地面积的减小带来的负向效应。
[Abstract]:As the basis of human survival and development, cultivated land resources bear human activities and food production, and are also important conditions for ensuring food security. Sanjiang Plain, with its vast cultivated land resources and good natural conditions, is an important commodity grain production base in China, which plays an important role in maintaining the supply of grain production in Heilongjiang Province and ensuring the food security of our country. This paper probes into the effect of the change of cultivated land resources on grain production. The purpose of this study is to grasp the influence of the change of cultivated land resources on grain production under the background of decreasing cultivated land area in most counties and cities so as to provide the basis for ensuring grain production in Sanjiang Plain. The main contents of this paper include the following aspects: 1, Sanjiang Plain cultivated land resources change characteristics. This paper analyzes the change situation of cultivated land resources in 27 years from the angle of time series, spatial pattern and transfer characteristics of cultivated land resources. The cultivated land resources in Sanjiang Plain are abundant, the increase range and speed show a downward trend, and the transformation between Sanjiang Plain and other land use types, but the overall quantity is still increasing, which provides a guarantee for grain production in Sanjiang Plain. The spatial agglomeration of cultivated land resources is obvious, and the development and concentration of cultivated land resources in the northeast counties of Sanjiang Plain form the spatial pattern of cultivated land resources, which determines the concentration area of grain production in Sanjiang Plain, and the analysis of grain production in Sanjiang Plain. This paper analyzes the change situation of total grain yield, per unit yield and per capita grain possession in Sanjiang Plain, and its position in Heilongjiang Province grain production. The results showed that the grain production pattern was gradually formed in Sanjiang Plain, which was dominated by soybean, corn and rice, and the spatial pattern of grain production was formed in the northeast county area. The carrying capacity pattern of "strong southwest and weak northeast" has been formed. The status of Sanjiang Plain in the grain supply of Heilongjiang Province has been strengthened constantly, and the position in ensuring food security has become more and more obvious. The influence of the change of cultivated land resources on grain production is analyzed. The relationship between cultivated land area change and grain production is analyzed from three aspects: barycenter coupling, correlation analysis and grain production influencing factor analysis model, which indicates that there is a certain correlation between them. The change of cultivated land area affects the increase of grain yield, the distribution of grain space, especially in the county where the cultivated land area decreases, begins to produce a negative effect on grain production. This paper probes into the effect of the quality of additional utilization of cultivated land on grain yield, and on the whole, should strengthen the effect of multiple cropping index, grain yield ratio and grain yield on grain production, and strengthen the multiple cropping index from the angle of improving the quality of additional utilization of cultivated land resources. The ratio of grain to crop, the contribution rate of cultivated land quality grain production, thus makes up for the negative effect brought by the decrease of cultivated land area.
【学位授予单位】：中国科学院研究生院（东北地理与农业生态研究所）
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：F323.211;F326.11

【参考文献】