北京市通州区不同绿地类型的土壤有机碳及其组分特征

doi:10.3969/j.issn.1004-1524.20220867

浙江农业学报 ›› 2023, Vol. 35 ›› Issue (7): 1699-1708.DOI: 10.3969/j.issn.1004-1524.20220867

北京市通州区不同绿地类型的土壤有机碳及其组分特征

查贵超¹(), 孙向阳¹^,^*(), 李素艳¹, 于雷², 岳宗伟¹, 王晨晨¹, 魏宁娴¹, 徐浠婕¹

1.北京林业大学林学院,森林培育与保护教育部重点实验室,北京 100083
2.北京市通州区园林绿化资源调查和监测中心,北京 101100

收稿日期:2022-06-12 出版日期:2023-07-25 发布日期:2023-08-17
作者简介:查贵超(1997—),男,安徽芜湖人,硕士研究生,研究方向为土壤生态。E-mail:2311064244@qq.com
通讯作者: *孙向阳,E-mail:sunxy@bjfu.edu.cn
基金资助:
科技部科技基础资源调查专项(2021FY100802)

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

摘要/Abstract

摘要：

为探究北京市通州区绿地土壤有机碳(SOC)及其组分的含量与分布规律,以城市绿地、果园、苗圃、平原造林地4种典型绿地土壤为研究对象,基于化学组成和密度分组技术分析不同土层(0~20、20~40 cm)SOC、富里酸碳(FAC)、胡敏酸碳(HAC)、胡敏素碳(HC)、轻组有机碳(LFOC)和重组有机碳(HFOC)的含量及其分布特征,并结合相关性分析探究SOC与土壤理化因子的关系。结果表明:在0~40 cm土层内,不同绿地的SOC、FAC、HAC、HC、LFOC、HFOC含量分别为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。在垂直分布上,SOC及其组分含量随土层深度的增加整体呈下降趋势。不同绿地0~40 cm土层的土壤有机碳密度为46.50~88.41 t·hm^-2,以果园最高,且显著(P<0.05)高于其他绿地类型。SOC及其组分含量与总孔隙度、田间持水量、碱解氮、有效磷和速效钾呈极显著(P<0.01)正相关,与pH和土壤容重呈极显著(P<0.01)负相关。总体而言,通州区上述4种绿地的SOC及其组分含量具有明显的表聚性,以果园的固碳潜力最大。

关键词: 有机碳组分, 通州区, 绿地类型

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

中图分类号:

S153.6

查贵超, 孙向阳, 李素艳, 于雷, 岳宗伟, 王晨晨, 魏宁娴, 徐浠婕. 北京市通州区不同绿地类型的土壤有机碳及其组分特征[J]. 浙江农业学报, 2023, 35(7): 1699-1708.

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.

图/表 7

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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

北京市通州区不同绿地类型的土壤有机碳及其组分特征

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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