祁连山北麓不同海拔土壤化学计量特征

高海宁, 李彩霞, 孙小妹, 张勇, 陈年来

Stoichiometry characteristics of soil at different altitudes in the Qilian Mountains

Haining Gao, Caixia Li, Xiaomei Sun, Yong Zhang, Nianlai Chen

表3 不同植被类型土壤C、N、P化学计量比特征(0—40 cm)

Table 3 The stoichiometry characteristics of soil C, N and P at different vegetation types (0-40 cm)

植被类型	海拔 /m	C/N	C/P	N/P	C/N^*	C/P^*	N/P^*
高山草地	4 130	13.56	26.47	2.00	16.54^a	54.00^b	4.02^a
	3 894	13.26	98.03	7.39
	3 750	10.63	59.28	5.58
	3 128	28.71	32.23	1.12
高山灌丛	3 732	13.10	96.88	7.40	20.10^a	80.51^ab	5.06^a
	3 624	19.22	118.45	6.16
	3 533	14.82	94.92	6.41
	3 516	13.34	46.00	3.45
	3 454	13.16	112.42	8.59
	3 365	12.92	44.01	3.41
	3 250	13.36	85.93	6.44
	3 075	63.38	84.27	1.33
	2 911	17.64	41.69	2.36
乔木林	3 379	15.54	104.16	6.71	28.36^a	105.89^a	4.99^a
	3 204	16.64	139.33	8.38
	3 094	38.86	67.99	1.75
	3 086	28.58	149.24	5.22
	3 071	17.38	118.85	6.83
	2 814	53.13	55.76	1.05