Data from: Facilitation by leguminous shrubs increases along a precipitation gradient

Hai-Yang Zhang, Xiao-Tao Lü, Alan K. Knapp, Henrik Hartmann, Edith Bai, Xiao-Bo Wang, Zheng-Wen Wang, Xiao-Guang Wang, Qiang Yu & Xing-Guo Han
Combining nutrient dynamics (plant nutrient uptake and soil fertility) can help uncover mechanisms of shrub-grass interactions and assess the validity of the stress-gradient hypothesis, which predicts that facilitation between plants increases in stressful environments. However, how facilitation via shrub-mediated nutrient increases varies with precipitation is poorly resolved. We first synthesized a global dataset from 66 studies and evaluated how shrubs affected soil organic carbon (C) and nitrogen (N) in grasslands along a precipitation gradient. We...
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