Characteristics of soil organic carbon and its components in different green space types in Tongzhou District of Beijing, China

doi:10.3969/j.issn.1004-1524.20220867

Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (7): 1699-1708.DOI: 10.3969/j.issn.1004-1524.20220867

• Environmental Science • Previous Articles Next Articles

Characteristics of soil organic carbon and its components in different green space types in Tongzhou District of Beijing, China

ZHA Guichao¹(), SUN Xiangyang¹^,^*(), LI Suyan¹, YU Lei², YUE Zongwei¹, WANG Chenchen¹, WEI Ningxian¹, XU Xijie¹

1. Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China
2. Landscaping Resources Survey and Monitoring Center of Tongzhou District, Beijing City, Beijing 101100, China

Received:2022-06-12 Online:2023-07-25 Published:2023-08-17
Contact: SUN Xiangyang

Abstract

Abstract:

In order to explore the content and distribution of soil organic carbon (SOC) and its components in green space in Tongzhou District of Beijing, China, we took four typical green space types of urban green space, orchard, nursery and plain plantation as the research object. The contents and distribution of SOC, fulvic acid carbon (FAC), humic acid carbon (HAC), humin carbon (HC), light fraction organic carbon (LFOC) and heavy fraction organic carbon (HFOC) in different soil layers (0-20, 20-40 cm) were analyzed based on chemical composition and density grouping technology. The relationship between SOC and its components with soil physical and chemical factors were revealed by correlation analysis. The results showed that, in 0-40 cm soil depth, the contents of SOC, FAC, HAC, HC, LFOC and HFOC in different green space types were 7.30-18.29, 1.71-2.96, 1.57-4.92, 3.98-10.41, 2.24-6.23, 4.85-12.06 g·kg^-1. SOC and its components showed a decrease trend with the depth of the soil layer in vertical direction. In 0-40 cm soil layer, the organic carbon density of different green spaces were 46.50-88.41 t·hm^-2, and the highest value was recorded in orchard, which was significantly (P<0.05) higher than the others. The content of SOC and its components were significantly (P<0.01) positively correlated with total porosity, field capacity, alkali-hydrolyzed nitrogen, available phosphorus and available potassium, yet were negatively correlated with pH and soil bulk density. In general, SOC and its components of different green space types in Tongzhou District showed obvious surface aggregation, and the carbon sequestration potential of orchard was the highest.

Key words: organic carbon component, Tongzhou District, green space type

CLC Number:

S153.6

ZHA Guichao, SUN Xiangyang, LI Suyan, YU Lei, YUE Zongwei, WANG Chenchen, WEI Ningxian, XU Xijie. Characteristics of soil organic carbon and its components in different green space types in Tongzhou District of Beijing, China[J]. Acta Agriculturae Zhejiangensis, 2023, 35(7): 1699-1708.

Figures/Tables 7

References 35

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样地编号 Sample plot No.	绿地类型 Green space type	地理坐标分布 Geographic coordinate distribution	植被覆盖率 Vegetation coverage/%	主要植被类型 Dominant vegetation
1~10	城市绿地 Urban green space	116°39'45″~116°47'07″E, 39°48'53″~39°56'31″N	35~55	碧桃(Amygdalus persica‘Duplex’Rehd.)、紫叶李(Prunus cerasifera Ehrhar f.)、银杏(Ginkgo biloba L.)、油松(Pinus tabuliformis Carrière)
11~20	果园 Orchard	116°41'40″~116°53'03″E, 39°40'41″~39°59'22″N	60~75	葡萄(Vitis vinifera L.)、梨(Pyrus spp.)、樱桃[Cerasus pseudocerasus (Lindl.) G. Don]、苹果(Malus pumila Mill.)、碧桃(Amygdalus persica‘Duplex’Rehd.)
21~30	苗圃 Nursery	116°39'35″~116°54'19″E, 39°41'38″~39°47'26″N	65~80	海棠[Malus spectabilis(Ait.) Borkh.]、油松(Pinus tabuliformis Carrière)、五角槭[Acer pictum subsp. mono (Maxim.) H. Ohashi]、紫叶李(Prunus cerasifera Ehrhar f.)、白蜡(Fraxinus chinensis Roxb.)、白皮松(Pinus bungeana Zucc. ex Endl.)、华山松(Pinus armandii Franch.)
31~40	平原造林地 Plain plantation	116°36'14″~116°54'28″E, 39°37'59″~40°00'58″N	60~90	国槐(Sophora japonica L.)、海棠[Malus spectabilis(Ait.) Borkh.]、五角槭[Acer pictum subsp. mono (Maxim.) H. Ohashi]、碧桃(Amygdalus persica‘Duplex’Rehd.)、白蜡(Fraxinus chinensis Roxb.)、油松(Pinus tabuliformis Carrière)、毛白杨(Populus tomentosa Carrière)

样地编号 Sample plot No.	绿地类型 Green space type	地理坐标分布 Geographic coordinate distribution	植被覆盖率 Vegetation coverage/%	主要植被类型 Dominant vegetation
1~10	城市绿地 Urban green space	116°39'45″~116°47'07″E, 39°48'53″~39°56'31″N	35~55	碧桃(Amygdalus persica‘Duplex’Rehd.)、紫叶李(Prunus cerasifera Ehrhar f.)、银杏(Ginkgo biloba L.)、油松(Pinus tabuliformis Carrière)
11~20	果园 Orchard	116°41'40″~116°53'03″E, 39°40'41″~39°59'22″N	60~75	葡萄(Vitis vinifera L.)、梨(Pyrus spp.)、樱桃[Cerasus pseudocerasus (Lindl.) G. Don]、苹果(Malus pumila Mill.)、碧桃(Amygdalus persica‘Duplex’Rehd.)
21~30	苗圃 Nursery	116°39'35″~116°54'19″E, 39°41'38″~39°47'26″N	65~80	海棠[Malus spectabilis(Ait.) Borkh.]、油松(Pinus tabuliformis Carrière)、五角槭[Acer pictum subsp. mono (Maxim.) H. Ohashi]、紫叶李(Prunus cerasifera Ehrhar f.)、白蜡(Fraxinus chinensis Roxb.)、白皮松(Pinus bungeana Zucc. ex Endl.)、华山松(Pinus armandii Franch.)
31~40	平原造林地 Plain plantation	116°36'14″~116°54'28″E, 39°37'59″~40°00'58″N	60~90	国槐(Sophora japonica L.)、海棠[Malus spectabilis(Ait.) Borkh.]、五角槭[Acer pictum subsp. mono (Maxim.) H. Ohashi]、碧桃(Amygdalus persica‘Duplex’Rehd.)、白蜡(Fraxinus chinensis Roxb.)、油松(Pinus tabuliformis Carrière)、毛白杨(Populus tomentosa Carrière)

绿地类型 Green space type	土层深度 Soil depth/cm	pH	土壤容重 Soil bulk density/ (g·cm^-3)	总孔隙度 Total porosity/%	田间持水量 Field capacity/%	碱解氮 Alkali-hydrolyzed nitrogen/ (mg·kg^-1)	有效磷 Available phosphorus/ (mg·kg^-1)	速效钾 Available potassium/ (mg·kg^-1)
城市绿地	0~20	8.33±0.05	1.36±0.03	48.79±1.06	29.72±1.78	51.10±6.54	13.76±1.70	150.83±11.67
Urban green space	20~40	8.37±0.03	1.55±0.04	41.65±1.37	22.06±1.41	40.56±4.96	7.64±1.12	136.25±8.98
果园	0~20	8.04±0.06	1.28±0.05	51.56±1.76	31.61±2.21	100.96±12.96	112.72±11.30	247.08±17.55
Orchard	20~40	8.13±0.05	1.54±0.07	41.98±2.52	23.15±2.27	55.20±8.38	58.52±7.54	175.13±14.05
苗圃	0~20	8.24±0.04	1.34±0.05	49.36±1.77	29.75±1.89	66.84±6.07	26.86±7.55	147.50±7.91
Nursery	20~40	8.37±0.05	1.66±0.04	37.47±1.41	19.11±1.20	44.68±4.77	13.57±4.24	127.08±8.77
平原造林地	0~20	8.30±0.03	1.41±0.02	46.62±0.90	27.15±0.72	55.44±5.26	23.94±4.12	152.08±18.23
Plain plantation	20~40	8.38±0.04	1.65±0.03	37.60±1.22	19.82±1.34	43.54±4.58	10.97±2.01	129.58±13.33

绿地类型 Green space type	土层深度 Soil depth/cm	pH	土壤容重 Soil bulk density/ (g·cm^-3)	总孔隙度 Total porosity/%	田间持水量 Field capacity/%	碱解氮 Alkali-hydrolyzed nitrogen/ (mg·kg^-1)	有效磷 Available phosphorus/ (mg·kg^-1)	速效钾 Available potassium/ (mg·kg^-1)
城市绿地	0~20	8.33±0.05	1.36±0.03	48.79±1.06	29.72±1.78	51.10±6.54	13.76±1.70	150.83±11.67
Urban green space	20~40	8.37±0.03	1.55±0.04	41.65±1.37	22.06±1.41	40.56±4.96	7.64±1.12	136.25±8.98
果园	0~20	8.04±0.06	1.28±0.05	51.56±1.76	31.61±2.21	100.96±12.96	112.72±11.30	247.08±17.55
Orchard	20~40	8.13±0.05	1.54±0.07	41.98±2.52	23.15±2.27	55.20±8.38	58.52±7.54	175.13±14.05
苗圃	0~20	8.24±0.04	1.34±0.05	49.36±1.77	29.75±1.89	66.84±6.07	26.86±7.55	147.50±7.91
Nursery	20~40	8.37±0.05	1.66±0.04	37.47±1.41	19.11±1.20	44.68±4.77	13.57±4.24	127.08±8.77
平原造林地	0~20	8.30±0.03	1.41±0.02	46.62±0.90	27.15±0.72	55.44±5.26	23.94±4.12	152.08±18.23
Plain plantation	20~40	8.38±0.04	1.65±0.03	37.60±1.22	19.82±1.34	43.54±4.58	10.97±2.01	129.58±13.33

绿地类型 Green space type	土层深度 Soil depth/cm	(FAC/SOC)/%	(HAC/SOC)/%	(HC/SOC)/%	(LFOC/SOC)/%	(HFOC/SOC)/%
城市绿地	0~20	22.21±1.18 ABa	23.04±0.91 Ba	54.75±1.33 Aa	32.61±2.32 Aa	67.39±2.32 Aa
Urban green space	20~40	24.64±1.71 Aa	21.55±1.59 Ba	53.81±2.25 Aa	30.76±1.47 Ba	69.24±1.47 Aa
果园Orchard	0~20	16.17±0.67 Ca	26.55±1.12 Aa	57.28±1.15 Aa	34.31±1.52 Aa	65.69±1.52 Aa
	20~40	18.16±1.31 Ba	27.71±2.52 Aa	54.12±3.78 Aa	29.55±2.44 Ba	70.45±2.44 Aa
苗圃Nursery	0~20	25.60±2.36 Aa	18.92±1.54 Ca	55.48±1.80 Aa	33.22±3.35 Aa	66.78±3.35 Aa
	20~40	23.85±2.41 Aa	21.11±1.32 Ba	55.04±2.17 Aa	31.50±2.58 Ba	68.50±2.58 Aa
平原造林地	0~20	18.80±1.28 BCb	27.38±0.99 Aa	53.82±1.02 Aa	39.27±1.99 Aa	60.73±1.99 Aa
Plain plantation	20~40	23.73±1.47 Aa	25.45±1.88 ABa	50.81±5.02 Aa	37.45±2.51 Aa	62.55±2.51 Ba

Characteristics of soil organic carbon and its components in different green space types in Tongzhou District of Beijing, China

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指标index	SOC	FAC	HAC	HC	LFOC	HFOC
FAC	0.700^**
HAC	0.902^**	0.484^**
HC	0.971^**	0.630^**	0.802^**
LFOC	0.862^**	0.574^**	0.695^**	0.893^**
HFOC	0.954^**	0.685^**	0.908^**	0.893^**	0.670^**
pH	-0.635^**	-0.396^**	-0.579^**	-0.625^**	-0.484^**	-0.643^**
土壤容重Soil bulk density	-0.532^**	-0.483^**	-0.430^**	-0.516^**	-0.414^**	-0.533^**
总孔隙度Total porosity	0.534^**	0.484^**	0.432^**	0.518^**	0.416^**	0.535^**
田间持水量Field capacity	0.470^**	0.430^**	0.400^**	0.444^**	0.369^**	0.470^**
碱解氮Alkali-hydrolyzed nitrogen	0.684^**	0.588^**	0.553^**	0.672^**	0.639^**	0.623^**
有效磷Available phosphorus	0.741^**	0.496^**	0.683^**	0.716^**	0.580^**	0.742^**
速效钾Available potassium	0.549^**	0.343^**	0.509^**	0.536^**	0.433^**	0.548^**

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