中亚热带植被恢复对土壤有机碳含量、碳密度的影响

辜翔,张仕吉,刘兆丹,李雷达,陈金磊,王留芳,方晰

Effects of vegetation restoration on soil organic carbon concentration and density in the mid-subtropical region of China

GU Xiang,ZHANG Shi-Ji,LIU Zhao-Dan,LI Lei-Da,CHEN Jin-Lei,WANG Liu-Fang,FANG Xi

表3 不同植被恢复阶段土壤的理化性质(平均值±标准偏差)

Table 3 Soil physicochemical properties at different stages during vegetation restoration (mean ± SD)

恢复阶段 Restoration stage	土层深度 Soil layer (cm)	容重 Bulk density (g·cm^-3)	0.05-2 mm 砂粒百分含量 Soil sand (0.05-2 mm) percentage (%)	0.002-0.05 mm粉粒百分含量 Soil silt (0.002- 0.05 mm) percentage (%)	<0.002 mm 黏粒百分含量 Soil clay (<0.002 mm) percentage (%)	pH	TP (g·kg^-1)	AP (mg·kg^-1)	C/N	C/P	N/P
LVR	0-10	1.4 ± 0.2^Aa	43.6 ± 4.8^Aa	44.7 ± 6.4^Aa	11.7 ± 4.6^Aa	4.5 ± 0.2^Aa	0.17 ± 0.16^Aa	2.1 ± 0.7^Aa	22.4 ± 12.5^Aa	109.1 ± 44.7^Aa	5.3 ± 2.4^Aa
	10-20	1.5 ± 0.1^Aab	39.5 ± 4.1^Aa	57.0 ± 5.2^Ab	3.5 ± 1.1^Ab	4.7 ± 0.2^Ab	0.12 ± 0.03^Aab	1.4 ± 0.6^Ab	20.0 ± 9.3^Aab	59.5 ± 51.4^Ab	3.3 ± 3.0^Ab
	20-30	1.5 ± 0.1^Aab	42.0 ± 5.6^Aa	56.5 ± 6.2^Ab	2.7 ± 0.9^Ab	4.8 ± 0.2^Ab	0.11 ± 0.04^Ab	1.3 ± 0.5^Ab	17.7 ± 9.5^Aab	42.9 ± 40.9^Ab	2.5 ± 2.2^Ab
	30-40	1.5 ± 0.1^Ab	43.1 ± 5.6^Aa	54.4 ± 6.1^ACb	2.5 ± 0.6^Ab	5.0 ± 0.2^Ac	0.11 ± 0.04^Ab	1.2 ± 0.5^Ab	13.7 ± 7.7^ABb	30.5 ± 37.4^Ab	2.5 ± 2.5^Ab
LCQ	0-10	1.4 ± 0.1^Ab	67.9 ± 2.1^Ba	21.6 ± 2.5^Ba	10.6 ± 2.4^Aa	4.8 ± 0.2^Ba	0.12 ± 0.03^Aa	2.6 ± 1.1^ABa	17.7 ± 6.8^Aa	164.4 ± 45.5^Ba	10.0 ± 3.1^Ba
	10-20	1.6 ± 0.1^Ab	60.1 ± 11.1^Bb	27.2 ± 9.1^Bb	12.9 ± 5.0^Ba	4.9 ± 0.2^ABab	0.10 ± 0.03^Ab	1.9 ± 0.6^Bab	16.3 ± 4.6^ABab	90.2 ± 29.9^Bb	6.0 ± 2.8^Bb
	20-30	1.6 ± 0.1^Ab	63.3 ± 3.9^Bab	26.0 ± 4.9^Bab	10.7 ± 3.5^Ba	5.0 ± 0.2^ABb	0.09 ± 0.02^Ab	1.9 ± 0.7^Bb	17.0 ± 7.5^ABab	72.4 ± 47.2^Bb	4.8 ± 2.84^Bbc
	30-40	1.7 ± 0.0^Bb	63.4 ± 3.7^Bab	25.8 ± 5.0^Bab	10.8 ± 3.4^Ba	5.1 ± 0.2^Ab	0.10 ± 0.03^Ab	1.6 ± 0.7^ABb	12.5 ± 3.2^Ab	40.7 ± 17.7^ABc	3.5 ± 1.6^ABc
PLL	0-10	1.2 ± 0.3^Aa	49.0 ± 18.5^Aa	35.2 ± 14.0^Ca	15.8 ± 6.3^Ba	4.4 ± 0.2^Ba	0.15 ± 0.05^Aa	2.5 ± 0.9^ABa	21.5 ± 3.4^Aa	217.6 ± 54.6^Ca	10.2 ± 2.7^Ba
	10-20	1.4 ± 0.2^Aa	45.2 ± 19.3^Aa	43.3 ± 18.0^Ca	11.6 ± 8.3^Ba	4.5 ± 0.3^Bab	0.13 ± 0.06^Aa	2.0 ± 0.4^BCab	20.1 ±6.5^Aab	103.6 ± 33.3^Bb	5.5 ± 2.1^Bb
	20-30	1.5 ± 0.2^Aa	43.0 ± 18.2^Aa	45.6 ± 19.4^Ca	11.5 ± 6.8^Ba	4.6 ± 0.3^Bab	0.11 ± 0.06^Aa	1.7 ± 0.8^ABb	16.6 ± 4.9^ABb	72.7 ± 26.5^Bc	4.5 ± 1.7^Bbc
	30-40	1.5 ± 0.1^Aa	41.2 ± 18.7^Aa	48.8 ± 19.7^Aa	10.1 ± 7.9^Ba	4.7 ± 0.3^Ab	0.13 ± 0.08^Aa	2.0 ± 1.5^Bab	17.1 ± 5.6^Bb	46.8 ± 22.4^ABc	3.1 ± 2.1^Ac
LAG	0-10	1.3 ± 0.1^Aa	26.1 ± 7.4^Ca	56.5 ± 8.4^Da	17.4 ± 4.2^Ba	4.4 ± 0.3^Ca	0.25 ± 0.05^Ba	2.8 ± 0.9^Ba	16.5 ± 2.9^Aa	151.4 ± 55.8^Ba	8.6 ± 3.7^Ba
	10-20	1.4 ± 0.0^Ab	20.1 ± 3.6^Cb	61.2 ± 4.8^Dab	18.8 ± 4.8^Ca	4.6 ± 0.2^Ca	0.20 ± 0.04^Bb	2.5 ± 0.9^Cab	13.2 ± 1.2^Bb	84.7 ± 27.3^ABb	6.5 ± 2.1^Bb
	20-30	1.5 ± 0.0^Ab	21.8 ± 5.2^Cab	62.9 ± 5.0^Ab	15.3 ± 4.3^Cab	4.6 ± 0.2^Ca	0.19 ± 0.04^Bb	2.0 ± 1.0^Bb	11.9 ± 1.6^Bb	67.4 ± 25.0^ABb	5.6 ± 1.8^Bb
	30-40	1.5 ± 0.0^Ab	23.9 ± 6.3^Cab	62.5 ± 7.3^Cb	13.6 ± 4.5^Bb	4.6 ± 0.3^Ca	0.20 ± 0.05^Bb	1.9 ± 0.9^ABb	12.0 ± 1.7^Ab	63.3 ± 31.3^Bb	5.2 ± 2.4^Bb