[1]唐文彬,王佑汉a,李谦b.基于景观指数的耕地细碎化研究——以四川盆地5个典型村为例[J].西华师范大学学报(自然科学版),2019,40(04):413-419.[doi:10.16246/j.issn.1673-5072.2019.04.015]
 TANG Wenbin,WANG Youhana,LI Qianb.Fragmentation of Cultivated Land Based on Landscape Index——A Case Study of Five Typical Villages in Sichuan Basin[J].Journal of China West Normal University(Natural Sciences),2019,40(04):413-419.[doi:10.16246/j.issn.1673-5072.2019.04.015]
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基于景观指数的耕地细碎化研究——以四川盆地5个典型村为例

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《西华师范大学学报(自然科学版)》[ISSN:1673-5072/CN:51-1699/N]

卷:
40
期数:
2019年04期
页码:
413-419
栏目:
出版日期:
2019-12-20

文章信息/Info

Title:

Fragmentation of Cultivated Land Based on Landscape Index ——A Case Study of Five Typical Villages in Sichuan Basin

作者:

唐文彬1王佑汉2a李谦2b

(1.成都理工大学 地球科学学院,成都610059; 2.西华师范大学 a.国土资源学院,b.商学院,四川 南充637009)

Author(s):

TANG Wenbin1WANG Youhan2aLI Qian2b

(1.Academic of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China; 2.a.College of Land and Resources;b.College of Business,China West Normal University,Nanchong Sichuan 637009,China)

关键词:

自然细碎权属细碎耕地撂荒景观指数四川盆地

Keywords:

natural fragmentationownership fragmentationfarmland abandonmentlandscape indexSichuan basin

分类号:
S342.4;F323.21
DOI:
10.16246/j.issn.1673-5072.2019.04.015
文献标志码:
A
摘要:

研究村域尺度下的耕地细碎化现象,可以为解决农村耕地撂荒情况提供参考。文章基于农村实地调研数据,通过景观指数衡量细碎化程度,并进一步探究耕地细碎化与各村撂荒地比重之间的关系,结果表明:(1)权属细碎化与自然细碎化条件下的景观指数相比,斑块数量、斑块密度和边缘密度有明显增加,说明在人为因素影响下,耕地细碎化程度有所增加。(2)自然条件和权属条件下的主成分具有相似性,其中第一主成分F1与斑块数量、斑块密度、平均面积和聚集度指数的绝对载荷系数值大于0.86,表达耕地空间分布特征;第二主成分F2与面积加权形状因子和面积加权分维数的载荷值大于0.93,表达地块的形状特征。(3)权属细碎化条件下的回归模型是反映耕地细碎化与撂荒地比重关系的最优模型,拟合度达0.998,说明耕地细碎化程度对土地撂荒有显著影响。

Abstract:

The study of land fragmentation phenomenon under the village scale can provide a reference for solving the problem of farmland abandonment.Based on the data of rural field investigation,this paper measures the degree of fragmentation by landscape index,and further explores the relationship between the fragmentation of farmland and the proportion of abandoned land in each village.The results show that: (1) By comparing the landscape index of ownership fragmentation with that of natural fragmentation,it is found that the number of patches,patch density and edge density have increased obviously,which indicates that the degree of fragmentation of farmland has increased under the influence of human factors.(2) Similarity is found between the principal components of natural and ownership conditions.The absolute load value of the first principal component F1 to the number of patches,patch density,average area and aggregation index is greater than 0.86,expressing the spatial distribution of cultivated land.The characteristic load value of the second principal component F2 to the area weighted shape factor and the area weighted fractal dimension is higher than 0.93,representing the shape feature of the parcel.(3) The regression model under the ownership fragmentation is the best model to reflect the relationship between the fragmentation of farmland and the proportion of abandoned land.The goodness of fit is 0.998,indicating that the degree of farmland fragmentation has a significant impact on land abandonment.

备注/Memo

备注/Memo:

收稿日期:2019-02-25
基金项目:西华师范大学基本科研业务项目(17C033);西华师范大学科研创新团队(CXTD20177);西华师范大学英才科研基金项目(17YC125)
作者简介:唐文彬(1996—),男,四川营山人,硕士研究生,主要从事遥感信息提取及数据挖掘研究。

通信作者:王佑汉(1982—),男,四川仪陇人,副教授,硕士生导师,主要从事土地资源利用与区域发展研究。E-mail:youhanwang@126.com

更新日期/Last Update: 2019-12-25