|
|||||
|
|
Long-term variability of root production in bioenergy crops from ingrowth core measurements |
|
| Authors: | Cheyenne Lei Michael Abraha Jiquan Chen Yahn-Jauh Su |
| Institution: | 1. Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI 48823, USA, ;2. Department of Geography, Environment and Spatial Sciences, Michigan State University, East Lansing, MI 48824, USA, ;3. Great Lakes Bioenergy Research Center, Michigan State University, East Lansing, MI 48824, USA, ;4. W. K. Kellogg Biological Station, Michigan State University, Hickory Corners, MI 49060, USA;Corresponding author. E-mail: cheyenne@msu.edu |
| Abstract: | Aims Long-term determination of root biomass production upon land-use conversion to biofuel crops is rare. To assess land-use legacy influences on belowground biomass accumulation, we converted 22-year-old Conservation Reserve Program (CRP) grasslands and 50+-year-old agricultural (AGR) lands to corn (C), switchgrass (Sw) and restored prairie (Pr) biofuel crops. We maintained one CRP grassland as a reference (Ref). We hypothesized that land-use history and crop type have significant effects on root density, with perennial crops on CRP grasslands having a higher root biomass productivity, while corn grown on former agricultural lands produce the lowest root biomass. |
| Keywords: | biofuel ecosystems corn ingrowth core method root biomass restored prairie switchgrass |
| 点击此处可从《Journal of Plant Ecology》浏览原始摘要信息 | |
| 点击此处可从《Journal of Plant Ecology》下载免费的PDF全文 | |