地球信息科学学报 ›› 2015, Vol. 17 ›› Issue (4): 469-477.doi: 10.3724/SP.J.1047.2015.00469
收稿日期:
2014-11-17
修回日期:
2014-12-29
出版日期:
2015-04-10
发布日期:
2015-04-10
作者简介:
作者简介:裴凤松(1982-),男,博士,主要从事城市扩张、气候变化及陆地碳循环模拟研究。E-mail:
基金资助:
PEI Fengsong1,*(), LI Xia2, LIU Xiaoping1,2, XIA Gengrui1
Received:
2014-11-17
Revised:
2014-12-29
Online:
2015-04-10
Published:
2015-04-10
Contact:
PEI Fengsong
E-mail:peifs@foxmail.com
About author:
*The author: SHEN Jingwei, E-mail:
摘要:
城市间相互作用对城市扩张时空演变及其植被碳循环效应具有重要影响。本文将城市相互作用因子引入到元胞自动机(CA)的城市扩张模拟中,使用极限学习机(ELM)来自动获取CA的转换规则,并提出了ELM-CA模型;结合Biome-BGC模型,以广东省为例,对未来城市扩张及其植被净第一性生产力(NPP)效应进行耦合研究。结果表明:ELM-CA模型无需人工确定各变量权重大小,在不同类型变量的参数获取方面具有优势。通过嵌入城市间相互作用,ELM-CA模型能较好地模拟广东省城市用地扩张过程和格局。另外,广东省城市用地扩张对植被NPP具有重要影响,主要表现为城市用地的增加显著地降低植被NPP。按2000-2005年间城市扩张趋势,到2020年,由城市用地扩张导致的植被NPP降低约占广东省植被NPP的1.79%。引导城市合理扩张,对于维持生态系统碳平衡、促进社会经济的可持续发展具有重要意义。
裴凤松, 黎夏, 刘小平, 夏庚瑞. 城市扩张驱动下植被净第一性生产力动态模拟研究——以广东省为例[J]. 地球信息科学学报, 2015, 17(4): 469-477.DOI:10.3724/SP.J.1047.2015.00469
PEI Fengsong,LI Xia,LIU Xiaoping,XIA Gengrui. Dynamic Simulation of Urban Expansion and Their Effects on Net Primary Productivity: A Scenario Analysis of Guangdong Province in China[J]. Journal of Geo-information Science, 2015, 17(4): 469-477.DOI:10.3724/SP.J.1047.2015.00469
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