期刊
SOIL SCIENCE SOCIETY OF AMERICA JOURNAL
卷 77, 期 3, 页码 856-859出版社
SOIL SCI SOC AMER
DOI: 10.2136/sssaj2012.0346N
关键词
-
类别
资金
- Elizabethtown College
- Pennsylvania Department of Education
Soil carbon dioxide efflux is impacted by urbanization but few studies have directly examined it in contrasting human-dominated land uses. We tested the hypothesis that soil carbon dioxide efflux would be greater in residential lawns than corn fields in Lancaster County, PA, by measuring soil carbon dioxide efflux, soil temperature, and soil moisture once a week for 10 wk in the fall of 2011. Soil carbon dioxide efflux occurring in residential lawns was significantly higher (F-1,F-6 = 7.46, p = 0.034) than the levels in corn (Zea mays L.) fields for the duration of the study. Soil carbon dioxide efflux significantly decreased over time in both land-use types (F-9,F-54 = 37.34, p < 0.001). Soil temperature, soil moisture, and land-use type significantly contributed to the efflux (R-2 = 0.744, F-3,F-76 = 73.443, p < 0.001). Higher soil temperatures in residential lawns were attributed to an urban heat island. Our results suggest converting agricultural land to residential developments could increase soil carbon dioxide release per unit area of soil, especially if urbanization increases local soil temperatures.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据