A study of the impacts of urban expansion on vegetation primary productivity levels in the Jing-Jin-Ji region, based on nighttime light data
A study of the impacts of urban expansion on vegetation primary productivity levels in the Jing-Jin-Ji region, based on nighttime light data
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基于夜间灯光数据的京津冀地区城市扩张对植被初级生产力水平的影响研究
DOI：
10.1016/j.jclepro.2020.121490
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发表时间：
2020-08-01
影响因子：
11.1
通讯作者：
Wang, Yutang
中科院分区：
文献类型：
--
作者：
Chang, Shuping;Wang, Jia;Wang, Yutang
快速的城市化给自然资源带来了巨大的压力。本研究阐述了京津冀地区的城市扩张及其对植被初级生产力的影响。讨论植被指数与夜间光照强度之间的时空相关性，以定量评估城市化效应。研究结果表明：（1）1998年至2018年，城市地区从原有的城市群逐渐向外扩展。 （二）20年来，北京和天津的发展方式不同。周边卫星城市大多呈同心式发展，河北省部分城市呈线性发展。 (3)研究区1998年、2003年、2008年、2013年、2018年平均初级生产力普遍低于同年非城市地区。 （4）1998—2018年，城市建成区植被初级生产力提高，植物状况改善。 (C) 2020 Elsevier Ltd. 保留所有权利。
Rapid urbanization has generated enormous pressure on natural resources. This study illustrates urban expansion in the Jing-Jin-Ji region and its influence on vegetation primary productivity. Tempo-spatial correlations between a vegetation index and nighttime light intensity are discussed to assess the urbanization effect quantitatively. The results show that: (1) From 1998 to 2018, urban areas gradually expanded outward from their original conglomerations. (2) In the past 20 years, Beijing and Tianjin have developed in different ways. The surrounding satellite cities have mostly developed concentrically, although some cities in Hebei province have developed more linearly. (3) The average primary productivity of the study area in 1998, 2003, 2008, 2013, and 2018 was generally lower than that of nonurban regions of the same year. (4) During the period from 1998 to 2018, the primary productivity of vegetation in the urban built-up areas increased, and the condition of the plant improved. (C) 2020 Elsevier Ltd. All rights reserved.