Vegetation productivity consequences of human settlement growth in the eastern United States
文献类型：SCI/SSCI论文
| 作者 | Zhao T. T. ; Brown D. G. ; Fang H. L. ; Theobald D. M. ; Liu T. ; Zhang T. |
| 发表日期 | 2012 |
| 关键词 | Carbon Urban sprawl Suburban sprawl Exurban sprawl Gross primary production Decennial census Remote sensing net primary production gross primary production land-use change light use efficiency carbon-cycle terrestrial ecosystems data set satellite modis scale |
| 英文摘要 | In this study, we investigated the impact of human settlement growth on vegetation carbon uptake in the eastern United States between 1992/1993 and 2001. Human settlement growth was measured by changes in the density of housing units. Vegetation carbon uptake was estimated with gross primary production (GPP) based on the light-use efficiency approach applied to satellite imagery. Annual GPP was found to increase by approximately 140 g C m(-2) on average for the entire study area in 2001 compared to 1992/1993, accompanied by region-wide increases in downward shortwave radiation and minimum daily temperature. Changes in GPP, however, varied significantly by different types of settlement growth. Exurbanized areas, where the rural settlement (less than 0.025 units per acre) converted to exurbs (0.025-0.6 units per acre), were associated with approximately 157 g C m(-2) increase in GPP due to high vegetation proportions. Suburbanization, the conversion from exurban settlement to suburbs (0.6-4 units per acre), was related with a decline of GPP by 152 g C m(-2) due to progressive development of built-up land cover. Results help to understand the potential of carbon mitigation in the human-dominated landscapes using vegetation as a natural store of carbon dioxide. This in turn has implications for the low-carbon development planning along the gradient of human settlement densities. |
| 出处 | Landscape Ecology |
| 卷 | 27 |
| 期 | 8 |
| 页 | 1149-1165 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 0921-2973 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/30676]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Zhao T. T.,Brown D. G.,Fang H. L.,et al. Vegetation productivity consequences of human settlement growth in the eastern United States. 2012. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。