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Cropland heterogeneity changes on the Northeast China Plain in the last three decades (1980s–2010s)

The Northeast China Plain is one of the major grain-producing areas of China because of its fertile black soil and large fields adapted for agricultural machinery. It has experienced some land-use changes, such as urbanization, deforestation, and wetland reclamation in recent decades. A comprehensiv...

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Autores principales: Liu, Xiaoxuan, Yu, Le, Dong, Qinghan, Peng, Dailiang, Wu, Wenbin, Yu, Qiangyi, Cheng, Yuqi, Xu, Yidi, Huang, Xiaomeng, Zhou, Zheng, Wang, Dong, Fang, Lei, Gong, Peng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7485484/
https://www.ncbi.nlm.nih.gov/pubmed/33194352
http://dx.doi.org/10.7717/peerj.9835
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author Liu, Xiaoxuan
Yu, Le
Dong, Qinghan
Peng, Dailiang
Wu, Wenbin
Yu, Qiangyi
Cheng, Yuqi
Xu, Yidi
Huang, Xiaomeng
Zhou, Zheng
Wang, Dong
Fang, Lei
Gong, Peng
author_facet Liu, Xiaoxuan
Yu, Le
Dong, Qinghan
Peng, Dailiang
Wu, Wenbin
Yu, Qiangyi
Cheng, Yuqi
Xu, Yidi
Huang, Xiaomeng
Zhou, Zheng
Wang, Dong
Fang, Lei
Gong, Peng
author_sort Liu, Xiaoxuan
collection PubMed
description The Northeast China Plain is one of the major grain-producing areas of China because of its fertile black soil and large fields adapted for agricultural machinery. It has experienced some land-use changes, such as urbanization, deforestation, and wetland reclamation in recent decades. A comprehensive understanding of these changes in terms of the total cropping land and its heterogeneity during this period is important for policymakers. In this study, we used a series of cropland products at the 30-m resolution for the period 1980–2015. The heterogeneity for dominant cropland decreased slowly over the three decades, especially for the large pieces of cropland, showing a general trend of increased cropland homogeneity. The spatial patterns of the averaged heterogeneity index were nearly the same, varying from 0.5 to 0.6, and the most heterogeneous areas were mainly located in some separate counties. Cropland expansion occurred across most of Northeast China, while cropland shrinking occurred only in the northern and eastern sections of Northeast China and around the capital cities, in the flat areas. Also, changes in land use away from cropland mainly occurred in areas with low elevation (50–200 m) and a gentle slope (less than 1 degree). The predominant changes in cropland were gross gain and homogeneity, occurring across most of the area except capital cities and boundary areas. Possible reasons for the total cropland heterogeneity changes were urbanization, restoration of cropland to forest, and some government land-use policies. Moreover, this study evaluates the effectiveness of cropland policies influencing in Northeast China.
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spelling pubmed-74854842020-11-12 Cropland heterogeneity changes on the Northeast China Plain in the last three decades (1980s–2010s) Liu, Xiaoxuan Yu, Le Dong, Qinghan Peng, Dailiang Wu, Wenbin Yu, Qiangyi Cheng, Yuqi Xu, Yidi Huang, Xiaomeng Zhou, Zheng Wang, Dong Fang, Lei Gong, Peng PeerJ Agricultural Science The Northeast China Plain is one of the major grain-producing areas of China because of its fertile black soil and large fields adapted for agricultural machinery. It has experienced some land-use changes, such as urbanization, deforestation, and wetland reclamation in recent decades. A comprehensive understanding of these changes in terms of the total cropping land and its heterogeneity during this period is important for policymakers. In this study, we used a series of cropland products at the 30-m resolution for the period 1980–2015. The heterogeneity for dominant cropland decreased slowly over the three decades, especially for the large pieces of cropland, showing a general trend of increased cropland homogeneity. The spatial patterns of the averaged heterogeneity index were nearly the same, varying from 0.5 to 0.6, and the most heterogeneous areas were mainly located in some separate counties. Cropland expansion occurred across most of Northeast China, while cropland shrinking occurred only in the northern and eastern sections of Northeast China and around the capital cities, in the flat areas. Also, changes in land use away from cropland mainly occurred in areas with low elevation (50–200 m) and a gentle slope (less than 1 degree). The predominant changes in cropland were gross gain and homogeneity, occurring across most of the area except capital cities and boundary areas. Possible reasons for the total cropland heterogeneity changes were urbanization, restoration of cropland to forest, and some government land-use policies. Moreover, this study evaluates the effectiveness of cropland policies influencing in Northeast China. PeerJ Inc. 2020-09-08 /pmc/articles/PMC7485484/ /pubmed/33194352 http://dx.doi.org/10.7717/peerj.9835 Text en ©2020 Liu et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Agricultural Science
Liu, Xiaoxuan
Yu, Le
Dong, Qinghan
Peng, Dailiang
Wu, Wenbin
Yu, Qiangyi
Cheng, Yuqi
Xu, Yidi
Huang, Xiaomeng
Zhou, Zheng
Wang, Dong
Fang, Lei
Gong, Peng
Cropland heterogeneity changes on the Northeast China Plain in the last three decades (1980s–2010s)
title Cropland heterogeneity changes on the Northeast China Plain in the last three decades (1980s–2010s)
title_full Cropland heterogeneity changes on the Northeast China Plain in the last three decades (1980s–2010s)
title_fullStr Cropland heterogeneity changes on the Northeast China Plain in the last three decades (1980s–2010s)
title_full_unstemmed Cropland heterogeneity changes on the Northeast China Plain in the last three decades (1980s–2010s)
title_short Cropland heterogeneity changes on the Northeast China Plain in the last three decades (1980s–2010s)
title_sort cropland heterogeneity changes on the northeast china plain in the last three decades (1980s–2010s)
topic Agricultural Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7485484/
https://www.ncbi.nlm.nih.gov/pubmed/33194352
http://dx.doi.org/10.7717/peerj.9835
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