青藏高原不同气候区高寒沙地两种优势植物及其根际土壤的养分特征

苟小林,周青平,陈有军,魏小星,涂卫国

Characteristics of nutrients in two dominant plant species and rhizospheric soils in alpine desert of the Qinghai-Xizang Plateau under contrasting climates

Xiao-Lin GOU,Qing-Ping ZHOU,You-Jun CHEN,Xiao-Xing WEI,Wei-Guo TU

表2 两种植物养分含量与土壤养分含量之间的相关系数

Table 2 Pearson’s correlations of nutrients between plant tissues and rhizospheric soils

土层 Soil layer	养分 Nutrient	沙蒿 Artemisia desertorum						中国沙棘 Hippophae rhamnoides subsp. sinensis
		枝叶 Branches and leaves			根 Roots			枝叶 Branches and leaves			根 Roots
		C	N	P	C	N	P	C	N	P	C	N	P
0-10 cm	SOC	0.96^**	-0.975^**	-0.953^**	0.827^*	-0.976^**	-0.949^**	0.983^***	0.992^***	0.802^ns	-0.972^**	0.986^***	0.765^ns
	STN	0.989^***	-0.985^***	-0.991^***	0.861^*	-0.979^**	-0.986^***	0.979^**	0.968^**	0.799^ns	-0.954^**	0.994^***	0.707^ns
	STP	0.42^ns	-0.348^ns	-0.427^ns	0.596^ns	-0.333^ns	-0.308^ns	-0.415^ns	-0.654^ns	-0.425^ns	0.65^ns	-0.481^ns	-0.293^ns
	SNN	0.915^*	-0.942^**	-0.908^*	0.77^ns	-0.951^**	-0.926^**	0.982^***	0.991^***	0.816^*	-0.967^**	0.985^***	0.768^ns
	SAN	0.997^**	-0.996^***	-0.990^***	0.906^*	-0.993^***	-0.979^**	0.974^**	0.996^***	0.779^ns	-0.98^**	0.978^**	0.752^ns
	SAP	0.906^*	-0.866^*	-0.899^*	0.903^*	-0.848^*	-0.833^*	0.966^**	0.99^***	0.746^ns	-0.974^**	0.968^**	0.712^ns
10-20 cm	SOC	0.945^**	-0.963^**	-0.939^**	0.761^ns	-0.96^**	-0.955^**	0.982^***	0.964^**	0.781^ns	-0.954^**	0.969^**	0.845^*
	STN	0.995^***	-0.996^***	-0.997^***	0.867^*	-0.994^***	-0.994^***	0.982^***	0.958^**	0.813^*	-0.931^**	0.963^**	0.849^*
	STP	0.239^ns	-0.193^ns	-0.192^ns	0.615^ns	-0.185^ns	-0.112^ns	0.576^ns	0.703^ns	0.376^ns	-0.77^ns	0.664^ns	0.253^ns
	SNN	0.993^***	-0.999^***	-0.987^***	0.875^*	-0.997^***	-0.987^***	0.991^***	0.983^***	0.798^ns	-0.97^**	0.995^***	0.761^ns
	SAN	0.994^***	-0.996^***	-0.986^***	0.9^*	-0.995^***	-0.979^**	0.963^**	0.99^***	0.732^ns	-0.98^**	0.961^**	0.738^ns
	SAP	0.986^***	-0.98^**	-0.989^***	0.902^*	-0.977^**	-0.982^**	0.933^**	0.994^***	0.75^ns	-0.993^**	0.956^**	0.714^ns