Decreasing Net Primary Productivity in Response to Urbanization in Liaoning Province, China

Sustainability

Miao Liu¹  Shulin Deng²  Le’an Qu²  Dong Chen²  Tan Chen²  Qiuhao Huang²  Manchun Li² 

[1] Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing 210023, China;

关键词: urbanization;    land use change;    net primary productivity;    Carnegie–Ames–Stanford approach productivity model;   

DOI  :  10.3390/su9020162

来源: DOAJ

【 摘 要 】

Regional ecosystems have been greatly affected by the rapid expansion of urban areas. In order to explore the impact of land use change on net primary productivity (NPP) in rapidly developing cities during the current urbanization process, we quantified land use change in Liaoning province between 2000 and 2010 using net primary productivity as an indicator of ecosystem productivity and health. The Carnegie–Ames–Stanford Approach model was used to estimate NPP by region and land use. We used a unit circle-based evaluation model to quantify local urbanization effects on NPP around eight representative cities. The dominant land use types were farmland, woodland and urban, with urban rapidly replacing farmland. Mean annual NPP and total NPP decreased faster from 2005 to 2010 than from 2000 to 2005, reflecting increasing urbanization rates. The eastern, primarily woodland part of Liaoning province had the greatest reduction in NPP, while the western part, which was primarily farmland and grassland, had the lowest reduction.

【 授权许可】

Unknown