东北地区农田空间分布格局及其影响因素分析

Spatial Distribution Pattern of Farmlands in Northeast China and Its Influencing Factors

在分析东北地区农田空间分布格局的基础上,利用逐步回归模型筛选出影响农田空间分布的生态因子。结果表明,东北地区农田集中分布松嫩平原、三江平原、辽河平原;农田率高-高空间自相关类型主要分布在松嫩平原和辽河平原的中部地区及三江平原的核心区域,低-低空间自相关类型主要分布在东北地区的西北部和长白山地;人均国内生产总值、降雨量和海拔高度与农田率呈负相关,而人口密度与农田率呈正相关。

Based on analyzing the spatial distribution pattern of farmlands in northeast China, the ecological factors influencing the spatial distribution of farmlands were selected by stepwise regression model. Results showed that the farmlands of Northeast China were mainly concentrat- ed in Songnen plain, Sanjiang plain and Liaohe plain; farmland rate high-high spatial autocorrelation type was mainly in the middle areas of Songnen plain and Liaohe plain and the core area of Sanjiang plain, low-low spatial autocorrelation type was mainly in the northwest and Changbai mountain in Northeast China; per capita GDP, rainfall and altitude were negatively correlated with farmland, while population density was positively correlated with farmland rate.