耕地景观破碎化同区域粮食产量变化的相关性探析  

Analysis on the correlation between cultivated land landscape fragmentation and regional grain yield change

作　　者：陈茜 何真 方鹤楠 赵雪梅 陆国稳 薛凯仁 CHEN Xi;HE Zhen;FANG He-nan;ZHAO Xue-mei;LU Guo-wen;XUE Kai-ren(College of Urban&Environmental Sciences/Key Laboratory for Geographical Process Analysis&Simulation of Hubei Province,Central China Normal University,Wuhan 430079,China)

机构地区：[1]华中师范大学城市与环境科学学院/地理过程分析与模拟湖北省重点实验室,武汉430079

出　　处：《湖北农业科学》2023年第3期1-7,共7页Hubei Agricultural Sciences

摘　　要：利用中国科学院30 m分辨率的土地利用影像与粮食产量数据,借助景观生态学方法和空间统计分析手段,在景观级别、乡镇尺度上探究潜江市水田、旱地景观破碎效应同粮食产量变化的相关关系。结果表明,2010—2018年研究区的粮食产量基本维持稳定;东南部乡镇耕地的内部结构基本维持稳定,其余各乡镇呈现增加的变化态势,且这些乡镇在2010年后也大多转增为减;水田景观破碎效应受斑块数量的影响较大,旱地景观破碎化受斑块形状和内部结构的影响较大。为保障区域粮食产出均衡,应重点改善区域的旱地景观形状,治理内部结构破碎化,保障区域产粮安全。Based on the land use image and grain yield data of the Chinese Academy of Sciences with a resolution of 30 m,and with the help of landscape ecology methods and spatial statistical analysis methods,this paper explored the correlation between the land⁃scape fragmentation effect of paddy fields and dry lands and the change of grain yield in Qianjiang City at the landscape level and town⁃ship scale.The results showed that the grain output of the study area was basically stable from 2010 to 2018;the internal structure of cultivated land in the towns and townships in the southeast was basically stable,while the remaining towns and townships were show⁃ing an increasing trend of change,and most of these towns and townships had changed from increase to decrease after 2010;the frag⁃mentation effect of paddy field landscape was greatly affected by the number of patches,while that of dry land landscape was greatly af⁃fected by the shape and internal structure of patches.In order to ensure the balance of regional grain output,the shape of dryland land⁃scape in the region should be improved,control the fragmentation of internal structure should be controlled,so as to ensure the safety of regional grain production.

关 键 词：景观破碎化 粮食产量 时空格局 空间数据 

分 类 号：F323[经济管理—产业经济]