Is salinity the main ecological factor that influences foliar nutrient resorption of desert plants in a hyper-arid environment?

Table 4 Covariations between leaf succulence index (LSI) and elements concentrations and resorption efficiencies

Bivariates	Community (n = 16)		Species (n = 21)		Species PIC (n = 20)
Bivariates	r	p	r	p	r	p
LSI - Ngr	0.17	0.53	0.11	0.64	−0.32	0.17
LSI - Nse	−0.01	0.96	−0.30	0.19	−0.30	0.20
LSI - NRE	0.07	0.80	0.49	0.02	−0.06	0.82
LSI - Pgr	0.43	0.10	0.17	0.45	−0.21	0.36
LSI - Pse	−0.05	0.86	−0.17	0.47	−0.23	0.34
LSI - PRE	0.38	0.15	0.43	0.05	−0.15	0.52
LSI - Kgr	−0.15	0.57	0.14	0.53	−0.09	0.69
LSI - Kse	−0.16	0.56	0.19	0.41	0.01	0.95
LSI - KRE	0.13	0.63	−0.10	0.68	−0.21	0.38
LSI - Nagr	0.90	< 0.01	0.88	< 0.01	0.77	< 0.01
LSI - Nase	0.88	< 0.01	0.87	< 0.01	0.72	< 0.01
LSI - NaRE	0.16	0.55	0.09	0.70	0.19	0.41

Significant relationships at p < 0.05 level are presented in bold (analyzed by Pearson correlation)
LSI indicates leaf succulence index, gr indicates green leaf, se indicates senesced leaf, RE indicates resorption efficiencies, PIC phylogenetically independent contrasts

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