Litter Quality of <i  >Populus</i> Species as Affected by Free-Air <svg     style="vertical-align:-4.32007pt;width:40.087502px;" id="M1" height="20.4125" version="1.1" viewBox="0 0 40.087502 20.4125" width="40.087502"  xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg">
	
		
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</svg> Enrichment and N-Fertilization

<table>Factor loadings in F1F2 space.</table>

Applied and Environmental Soil Science

fig3

Figure 3

Figure 3: Litter Quality of <i  >Populus</i> Species as Affected by Free-Air <svg     style="vertical-align:-4.32007pt;width:40.087502px;" id="M1" height="20.4125" version="1.1" viewBox="0 0 40.087502 20.4125" width="40.087502"  xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg">
	
		
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</svg> Enrichment and N-Fertilization 

Applied and Environmental Soil Science

Litter Quality of Populus Species as Affected by Free-Air Enrichment and N-Fertilization

Figure 3