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Assessment the impact of urban expansion on cropland net primary productivity in Northeast China

文献类型：期刊论文

作者Deng, Xiaojuan2; Xu, Xinliang; Cai, Hongyan; Li, Jiahui2
刊名ECOLOGICAL INDICATORS
出版日期2024-02-01
卷号159页码:111698
关键词Northeast China Cropland net primary productivity Urban expansion City scale Food security
DOI10.1016/j.ecolind.2024.111698
产权排序1
文献子类Article
英文摘要Urban development inevitably comes with the loss of prime agricultural land, leading to a decline in cropland productivity. The Northeast region is an important grain-producing region in China, and agricultural land is of great significance in ensuring national food security. Here, land use and cover data and MODIS-NPP data were used to comprehensively understand the direct and adverse influence of urban land growth on cropland net primary productivity (NPP) in Northeast China. The results indicated that (1) in Northeast China, the urban land area increased by a total of 5230.00 km2 since 2000. The urban land growth phenomenon was particularly notable in the cities near the central transportation trunk line and along the southern coastal regions. (2) more than half of the newly added urban land patches originated from cropland. Between 2000 and 2020, urban expansion in Northeast China resulted in a 0. 85 Tg C loss of cropland NPP. (3) there was significant regional variation in cropland NPP loss. The low altitude and low slope regions experienced the most significant NPP loss. Meanwhile, large and developed cities caused more NPP losses, and cities with dispersed expansion had a broader impact on cropland productivity than cities with concentrated expansion. (4) when converting the loss of cropland NPP to crop yield, it revealed a reduction of 0.91 million tons in grain yield in Northeast China. These findings provide valuable insights for urban development and cropland protection strategies in Northeast China, offering crucial guidance for sustainable land use practices.
WOS关键词BLACK SOIL REGION ; LAND-USE CHANGES ; CULTIVATED LAND ; SPATIOTEMPORAL PATTERNS ; RAPID URBANIZATION ; FOOD SECURITY ; PROTECTION ; CHALLENGE ; POLICIES ; BALANCE
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
语种英语
出版者ELSEVIER
WOS记录号WOS:001178943000001
源URL[http://ir.igsnrr.ac.cn/handle/311030/203341]  
专题资源与环境信息系统国家重点实验室_外文论文
作者单位1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Deng, Xiaojuan,Xu, Xinliang,Cai, Hongyan,et al. Assessment the impact of urban expansion on cropland net primary productivity in Northeast China[J]. ECOLOGICAL INDICATORS,2024,159:111698.
APA Deng, Xiaojuan,Xu, Xinliang,Cai, Hongyan,&Li, Jiahui.(2024).Assessment the impact of urban expansion on cropland net primary productivity in Northeast China.ECOLOGICAL INDICATORS,159,111698.
MLA Deng, Xiaojuan,et al."Assessment the impact of urban expansion on cropland net primary productivity in Northeast China".ECOLOGICAL INDICATORS 159(2024):111698.

入库方式： OAI收割

来源：地理科学与资源研究所

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