The Vertical Distribution and Correlation of Soil Carbon in Each Component of Rubber Trees at Different Ages

doi:10.13466/j.cnki.lyzygl.2017.03.021

Abstract

Abstract:

The objective of this study was to investigate the vertical distribution of soil carbon and correlations of rubber trees of 1a、6a、11a,16a,21a,26a,31a-old of strain PR107. The results showed that in the vertical distribution,monthly mean soil organic carbon(SOC)and mineralized carbon(CM)and microbial biomass carbon(MBC)content in soil showed similar regularity and decreased with the increase of soil depth,but the carbon content in different soil layers,different ages have different performance.The soil mineralization carbon efficiency of rubber plantation is about 4.15%~8.39%;and the efficiency of soil microbial biomass carbon is between 1.24%~7.55%.There was a significant linear positive correlation with soil organic carbon and mineralized carbon and with the microbial biomass carbon.

Key words: rubber tree(Heveabrassiliensis), carbon content, effective rate

CLC Number:

WANG Chunyan, LI Jianhua, LIU Hanwen, PENG Zongbo. The Vertical Distribution and Correlation of Soil Carbon in Each Component of Rubber Trees at Different Ages[J]. FOREST RESOURCES WANAGEMENT, 2017, (3): 109-113.

Figures/Tables 6

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年龄/a	胸径/cm	位置	经纬度
1	1.26±0.02f	海胶集团阳江分公司大丰农场三队	N19°14',E109°45'
6	13.98±0.22e	海胶集团阳江分公司大丰农场一队	N19°15',E109°45'
11	20.70±0.30d	海胶集团阳江分公司大丰农场一队	N19°15',E109°45'
16	23.94±0.14c	海胶集团阳江分公司大丰农场一队	N19°15',E109°45'
21	25.62±0.42bc	海胶集团阳江分公司大丰农场二队	N19°16',E109°45'
26	27.32±0.77b	海胶集团阳江分公司大丰农场一队	N19°16',E109°44'
31	29.39±1.33a	海胶集团阳江分公司大丰农场二队	N19°16',E109°45'

林龄/a	指标	土层/cm
林龄/a	指标	0~20	20~40	40~60	60~80	80~100
1	土壤矿化碳有效率/%	4.22±0.02f	4.53±0.03d	6.04±0.03e	5.57±0.03de	4.86±0.03f
6		6.41±0.04b	7.20±0.04a	8.25±0.05a	6.80±0.04c	6.12±0.04c
11		6.43±0.03b	6.65±0.04b	6.67±0.04d	7.93±0.05b	5.77±0.03d
16		6.77±0.04a	7.22±0.04a	7.33±0.04b	8.39±0.05a	6.23±0.04b
21		4.75±0.03d	4.30±0.03e	4.93±0.03f	5.48±0.03e	4.39±0.03g
26		5.75±0.03c	6.35±0.04c	7.04±0.04c	6.87±0.04c	6.78±0.04a
31		4.43±0.03e	4.15±0.02f	4.94±0.03f	5.64±0.03d	5.25±0.03e
1	土壤微生物量碳有效率/%	1.34±0.01f	1.90±0.01f	2.69±0.01g	2.78±0.02g	1.24±0.01g
6		2.78±0.02e	4.02±0.02d	4.94±0.03b	3.44±0.02d	2.24±0.01e
11		3.73±0.02c	4.59±0.03b	3.29±0.02f	3.57±0.02c	1.71±0.01f
16		4.02±0.02b	4.44±0.03c	4.42±0.03c	3.04±0.02f	2.69±0.01d
21		3.28±0.02d	3.17±0.02e	4.12±0.02d	4.37±0.02b	3.67±0.02b
26		3.330.02d	4.61±0.03b	3.60±0.02e	3.24±0.02e	3.05±0.02b
31		4.09±0.03a	4.71±0.03a	6.02±0.04a	7.55±0.04a	5.60±0.03a