Data-model synthesis of grassland carbon metabolism. Quantifying direct, indirect & interactive effects of warming & elevated CO2

Pendall, Elise¹  Ogle, Kiona¹  Parton, William¹ 

[1]Univ. of Wyoming, Laramie, WY (United States)

DOI  :  10.2172/1239688
RP-ID  :  Final Report: DOE-Wyoming--0006373
PID  :  OSTI ID: 1239688
Others  :  Other: 03077666293

学科分类：环境科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

This research project improved understanding of how climate change (elevated atmospheric CO₂, warming and altered precipitation) can affect grassland ecosystem productivity and nutrient availability. Our advanced experimental and modeling methods allowed us to test 21 specific hypotheses. We found that ecosystem changes over years of exposure to climate change can shift the plant communities and potentially make them more resilient to future climate changes. These changes in plant communities may be related to increased growth of belowground roots and enhanced nutrient uptake by some species. We also found that climate change can increase the spread of invasive and noxious weeds. These findings are important for land managers to make adaptive planning decisions for domestic livestock production in response to climate variability in semi-arid grasslands.