The changing patterns of cropland conversion to built-up land in China from 1987 to 2010

The changing patterns of cropland conversion to

built-up land in China from 1987 to 2010

JU Hongrun;HU Shunguang;ZUO Lijun;ZHANG Zengxiang;ZHAO Xiaoli;WANG Xiao;WU Wenbin;YI Ling;WEN Qingke;LIU Fang;XU Jinyong

【期刊名称】《地理学报（英文版）》 【年(卷),期】2018(028)011

【摘要】Over the past few decades,built-up land in China has increasingly expanded with rapid urbanization,industrialization and rural settlements construction.The expansions encroached upon a large amount of cropland,placing great challenges on national food security.Although the impacts of urban expansion on cropland have been intensively illustrated,few attentions have been paid to differentiating the effects of growing urban areas,rural settlements,and industrial/transportation land.To fill this gap and offer comprehensive implications on framing policies for cropland protection,this study investigates and compares the spatio-temporal patterns of cropland conversion

to

urban

areas,rural

settlements,and

industrial/transportation land from 1987 to 2010,based on land use maps interpreted from remote sensing imagery.Five indicators were developed to analyze the impacts of built-up land expansion on cropland in China.We find that 42,822 km2 of cropland were converted into built-up land in China,accounting for 43.8％ of total cropland loss

during 1987-2010.Urban growth showed a greater impact on cropland loss than the expansion of rural settlements and the expansion of industrial/transportation land after 2000.The contribution of rural settlement expansion decreased;however,rural settlement saw the highest percentage of traditional cropland loss which is generally in high

quality.The

contribution

of

industrial/transportation

land

expansion increased dramatically and was mainly distributed in major food production regions.These changes were closely related to the economic restructuring,urban-rural transformation and government policies in China.Future cropland conservation should focus on not only finding a reasonable urbanization mode,but also solving the \village\ 【总页数】16页(1595-1610) 【关键词】 【

作

者

】

JU

Hongrun;HU

Shunguang;ZUO

Lijun;ZHANG

Zengxiang;ZHAO Xiaoli;WANG Xiao;WU Wenbin;YI Ling;WEN Qingke;LIU Fang;XU Jinyong

【作者单位】Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;School of Tourism and Geography Science, Qingdao University,

Qingdao

266071,

Shandong,

China;Department

of

Geography, University of California Santa Barbara, Santa Barbara, CA 93106, USA;University of Chinese Academy of Sciences, Beijing 100049,

China;Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;Key

Laboratory

of

Agri-informatics,

Ministry

of

Agriculture/Institute of Agricultural Resources and Regional Planning, Chinese

Academy

of

Agricultural

Sciences,

Beijing

100081,

China;Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China

【正文语种】英文 【中图分类】 【文献来源】

https://www.zhangqiaokeyan.com/academic-journal-cn_journal-geographical-sciences_thesis/0201270239666.html 【相关文献】

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