Article title: Relationship of plant diversity with litter and soil available nitrogen in analpinemeadow under nine-year grazing exclusion
Journal: Ecological Research
Authors: Jingru Zou, Caiyun Luo, Xingliang Xu, Na Zhao, Liang Zhao, Xinquan Zhao
Corresponding author:Xinquan Zhao
Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Plateau Institute of Biology, Chinese Academy of Sciences, Xining 810001, China
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Figure S1.Linear correlations between litter amount and species diversity of the functional groups (Grasses, Sedges, Legumes and Forbs) in the fenced and grazed meadows. Each data point was the value for each plot in the fenced (solid circle) and grazed meadows (open circle).
Figure S2.Linear correlations between litter amount and plant characteristics (Height, Cover and Production) of the functional groups (Grasses, Sedges, Legumes and Forbs) in the fenced and grazed meadows. Each data point was the value for each plot in the fenced (solid circle) and grazed meadows (open circle).
Figure S3.Linear correlations between soil NH4+ content at depth 0-5cm and species diversity of the functional groups (Grasses, Sedges, Legumes and Forbs) in the fenced and grazed meadows. Each data point was the value for each plot in the fenced (solid circle) and grazed meadows (open circle).
Figure S4. Linear correlations between soil NO3- content at depth 0-5cm and species diversity of the functional groups (Grasses, Sedges, Legumes and Forbs) in the fenced and grazed meadows. Each data point was the value for each plot in the fenced (solid circle) and grazed meadows (open circle).
Figure S5. Linear correlations between soil available nitrogen content (NH4+ and NO3-) at depth 0-5cm and species diversity of the functional groups (Grasses, Sedges, Legumes and Forbs) in the fenced and grazed meadows. Each data point was the value for each plot in the fenced (solid circle) and grazed meadows (open circle).
Figure S6. Linear correlations between soil NH4+ content at depth 0-5cm and plant characteristics (Height, Cover and Production) of the functional groups (Grasses, Sedges, Legumes and Forbs) in the fenced and grazed meadows. Each data point was the value for each plot in the fenced (solid circle) and grazed meadows (open circle).
Figure S7. Linear correlations between soil NO3- content at depth 0-5cm and plant characteristics (Height, Cover and Production) of the functional groups (Grasses, Sedges, Legumes and Forbs) in the fenced and grazed meadows. Each data point was the value for each plot in the fenced (solid circle) and grazed meadows (open circle).
Figure S8. Linear correlations between soil available nitrogen content (NH4+ and NO3-) at depth 0-5cm and plant characteristics (Height, Cover and Production) of the functional groups (Grasses, Sedges, Legumes and Forbs) in the fenced and grazed meadows. Each data point was the value for each plot in the fenced (solid circle) and grazed meadows (open circle).
Table S1.Relations of litter amountwith plant diversity, height, cover and production of the functional groups (Grasses, Sedges, Legumes and Forbs). “×” indicates no relations, “+” indicates positive relations, and “-” indicates negative relations.
Diversity / Height / Cover / ProductionAboveground
litter
biomass / Grasses / × / × / × / ×
Sedges / - / + / × / ×
Legumes / +/- / × / - / -
Forbs / - / × / - / ×
Table S2.Relations of soil NH4+, NO3-, and total available nitrogen (NH4++NO3-) at depth 0-5cm with plant diversity, height, cover and production of the functional groups (Grasses, Sedges, Legumes and Forbs).“×” indicates no relations, “+” indicates positive relations, and “-” indicates negative relations.
Plant Diversity / Height / Cover / ProductionGrasses / NH4+ / × / × / × / ×
NO3- / × / × / × / -
Soil available N / × / × / × / ×
Sedges / NH4+ / × / × / × / ×
NO3- / - / × / × / ×
Soil available N / - / × / × / ×
Legumes / NH4+ / - / × / - / ×
NO3- / - / × / × / ×
Soil available N / - / × / - / ×
Forbs / NH4+ / - / × / - / ×
NO3- / × / × / × / ×
Soil available N / - / × / - / ×
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