耕地景观破碎化同区域粮食产量变化的相关性探析

doi:10.14088/j.cnki.issn0439-8114.2023.03.001

摘要/Abstract

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。

关键词: 景观破碎化, 粮食产量, 时空格局, 空间数据

Abstract: 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 landscape fragmentation effect of paddy fields and dry lands and the change of grain yield in Qianjiang City at the landscape level and township 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 showing an increasing trend of change, and most of these towns and townships had changed from increase to decrease after 2010; the fragmentation effect of paddy field landscape was greatly affected by the number of patches, while that of dry land landscape was greatly affected by the shape and internal structure of patches. In order to ensure the balance of regional grain output, the shape of dryland landscape 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.

Key words: landscape fragmentation, grain yield, spatial and temporal pattern, spatial data

中图分类号:

F323

陈茜, 何真, 方鹤楠, 赵雪梅, 陆国稳, 薛凯仁. 耕地景观破碎化同区域粮食产量变化的相关性探析[J]. 湖北农业科学, 2023, 62(3): 1-7.

CHEN Xi, HE Zhen, FANG He-nan, ZHAO Xue-mei, LU Guo-wen, XUE Kai-ren. Analysis on the correlation between cultivated land landscape fragmentation and regional grain yield change[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(3): 1-7.

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