中国北方温带灌丛生态系统碳、氮、磷储量

doi:10.17521/cjpe.2016.0201

植物生态学报 ›› 2017, Vol. 41 ›› Issue (1): 14-21.DOI: 10.17521/cjpe.2016.0201

所属专题：中国灌丛生态系统碳储量的研究；凋落物；碳储量

中国北方温带灌丛生态系统碳、氮、磷储量

郭焱培¹, 杨弦¹, 安尼瓦尔·买买提², 刘鸿雁¹, 马文红³, 于顺利⁴, 唐志尧^1,^*()

¹北京大学城市与环境学院, 北京 100871
²中国科学院新疆生态与地理研究所, 乌鲁木齐 830011
³内蒙古大学生命科学学院, 呼和浩特 010021
⁴中国科学院植物研究所植被与环境变化国家重点实验室, 北京 100093

收稿日期:2016-06-14 接受日期:2016-11-10 出版日期:2017-01-10 发布日期:2017-01-23
通讯作者: 唐志尧
作者简介:* 通信作者Author for correspondence (E-mail:sunzhiqiang1956@sina.com)
基金资助:
中国科学院战略先导性科技专项(XDA05050301)

Storage of carbon, nitrogen and phosphorus in temperate shrubland ecosystems across Northern China

Yan-Pei GUO¹, Xian YANG¹, Anwar MOHHAMOT², Hong-Yan LIU¹, Wen-Hong MA³, Shun-Li YU⁴, Zhi-Yao TANG^1,^*()

¹College of Urban and Environmental Science, Peking University, Beijing 100871, China

²Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi 830011, China;

³College of Life Sciences, Inner Mongolia University, Hohhot 010021, China

⁴State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

Received:2016-06-14 Accepted:2016-11-10 Online:2017-01-10 Published:2017-01-23
Contact: Zhi-Yao TANG
About author:KANG Jing-yao(1991-), E-mail: kangjingyao_nj@163.com。

摘要/Abstract

摘要：

研究生态系统碳(C)、氮(N)、磷(P)密度分布和储量对于理解生态系统碳循环和养分循环的机制和规律有重要意义。现有的相关研究多集中在森林和草地生态系统。在中国北方, 灌丛生境水分和土壤条件差异很大, 这为研究生态系统C、N、P密度与储量的分布格局提供了良好条件。该研究调查了433个中国北方温带灌丛样地的生物量、凋落物以及土壤等组分的有机C及N、P含量, 据此计算出中国北方灌丛生态系统有机C及N、P密度和储量。结果表明: 中国北方灌丛平均生态系统有机C及N、P密度分别为69.8 Mg·hm^-2、7.3 Mg·hm^-2、4.2 Mg·hm^-2。其中, 生物量C、N、P密度分别为5.1 Mg·hm^-2、11.5×10^-2 Mg·hm^-2、8.6×10^-3 Mg·hm^-2, 生物量C、N、P密度与降水和土壤养分关系显著; 凋落物C、N、P密度分别为1.4 Mg·hm^-2、3.8×10^-2 Mg·hm^-2、2.5×10^-3 Mg·hm^-2, 凋落物C、N、P密度与温度和降水关系显著; 1 m深土壤的平均有机C及N、P密度分别为64.0 Mg·hm^-2、7.1 Mg·hm^-2、4.2 Mg·hm^-2, 土壤有机C及N密度与温度和降水关系显著。中国北方灌丛生态系统的总有机C及N、P储量分别为1.7 Pg、164.9 Tg、124.8 Tg。其中生物量C、N、P储量分别为128.4 Tg、3.1 Tg、0.2 Tg; 凋落物C、N、P储量分别为8.4 Tg、0.45 Tg、0.027 Tg; 土壤是最大的C、N、P库, 1 m深土壤有机C及N、P储量分别为1.6 Pg、161.3 Tg、124.6 Tg。

关键词: 碳, 氮, 磷, 储量, 密度, 灌丛, 中国北方

Abstract:

Aims Studying storage of carbon (C), nitrogen (N) and phosphorus (P) in ecosystems is of significance in understanding carbon and nutrient cycling. Previous researches in ecosystem C, N and P storage have biased towards forests and grasslands. Shrubland ecosystems encompass a wide gradient in precipitation and soil conditions, providing a unique opportunity to explore the patterns of ecosystem C, N and P storage in relation to climate and soil properties.
Methods We estimated densities and storage of organic C, N and P of shrubland ecosystems in Northern China based on data from 433 shrubland sites.
Important findings The main results are summarized as follows: the average organic C, N and P densities in temperate shrubland ecosystems across Northern China were 69.8 Mg·hm^-2, 7.3 Mg·hm^-2 and 4.2 Mg·hm^-2, respectively. The average plant C, N and P densities were 5.1 Mg·hm^-2, 11.5 × 10^-2 Mg·hm^-2 and 8.6 × 10^-3 Mg·hm^-2, respectively, and were significantly correlated with precipitation and soil nutrient concentrations. The average litter C, N and P densities were 1.4 Mg·hm^-2, 3.8 ×10^-2 Mg·hm^-2, 2.5 ×10^-3 Mg·hm^-2and were significantly correlated with temperature and precipitation. The average soil organic C, N and P densities in the top 1 m were 64.0 Mg·hm^-2, 7.1 Mg·hm^-2 and 4.2 Mg·hm^-2, respectively and the former two were significantly correlated with temperature and precipitation. The total organic C, N and P storage of shrublands in Northern China were 1.7 Pg, 164.9 Tg and 124.8 Tg, respectively. The plant C, N and P storage were 128.4 Tg, 3.1 Tg and 0.2 Tg, respectively. The litter C, N and P storage were 8.4 Tg, 0.45 Tg, 0.027 Tg, respectively. Soil is the largest C, N and P pool in the studied area. The soil organic C, N and P storage in the top 1 meter were 1.6 Pg, 161.3 Tg and 124.6 Tg, respectively.

Key words: carbon, nitrogen, phosphorus, storage, density, shrublands, Northern China

郭焱培, 杨弦, 安尼瓦尔·买买提, 刘鸿雁, 马文红, 于顺利, 唐志尧. 中国北方温带灌丛生态系统碳、氮、磷储量. 植物生态学报, 2017, 41(1): 14-21. DOI: 10.17521/cjpe.2016.0201

Yan-Pei GUO, Xian YANG, Anwar MOHHAMOT, Hong-Yan LIU, Wen-Hong MA, Shun-Li YU, Zhi-Yao TANG. Storage of carbon, nitrogen and phosphorus in temperate shrubland ecosystems across Northern China. Chinese Journal of Plant Ecology, 2017, 41(1): 14-21. DOI: 10.17521/cjpe.2016.0201

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链接本文: https://www.plant-ecology.com/CN/10.17521/cjpe.2016.0201

https://www.plant-ecology.com/CN/Y2017/V41/I1/14

图/表 5

表1 中国北方主要灌丛的碳、氮、磷密度(平均值±标准误差)

Table 1 Carbon (C), nitrogen (N) and phosphorus (P) densities of major shrublands in Northern China (mean ± SE)

	落叶阔叶灌丛 Deciduous broadleaf shrublands	稀疏灌丛 Sparse shrublands	总计 Total
样地数 Number of sites	329	104	433
碳密度 C density (Mg·hm^-2)	86.1 ± 3.7	22.1 ± 2.0	69.8 ± 3.0
生物量 Biomass (Mg·hm^-2)	6.1 ± 0.3	1.9 ± 0.3	5.1 ± 0.2
凋落物 Litter (Mg·hm^-2)	1.5 ± 0.2	0.7 ± 0.1	1.4 ± 0.1
土壤有机碳 Soil organic C (Mg·hm^-2)	78.5 ± 3.6	19.5 ± 1.9	64.0 ± 3.0
氮密度 N density (Mg·hm^-2)	8.1 ± 0.3	2.6 ± 0.3	7.3 ± 0.3
生物量 Biomass (10^-2 Mg·hm^-2)	12.9 ± 0.6	6.4 ± 0.7	11.5 ± 0.5
凋落物 Litter (10^-2 Mg·hm^-2)	4.0 ± 0.4	1.8 ± 0.2	3.8 ± 0.3
土壤 Soil (Mg·hm^-2)	7.9 ± 0.4	2.5 ± 0.3	7.1 ± 0.3
磷密度 P density (Mg·hm^-2)	4.3 ± 0.2	3.7 ± 0.3	4.2 ± 0.2
生物量 Biomass (10^-3 Mg·hm^-2)	9.9 ± 0.5	3.6 ± 0.3	8.6 ± 0.4
凋落物 Litter (10^-3 Mg·hm^-2)	2.7 ± 0.2	0.9 ± 0.2	2.5 ± 0.2
土壤 Soil (Mg·hm^-2)	4.3 ± 0.2	3.7 ± 0.3	4.2 ± 0.2

图1 中国北方灌丛生物量碳(A-D)、氮(E-H)、磷(I-L)密度与环境的关系(点线: p > 0.01; 短划线: 0.001 < p < 0.01; 实线: p < 0.001)。

Fig. 1 Biomass carbon (C) (A-D), nitrogen (N) (E-H) and phosphorus (P) (I-L) densities for shrublands of Northern China in relation to environmental factors (dotted line: p > 0.01; dashed line: 0.001 < p < 0.01; solid line: p < 0.001). AP, annual precipitation; MAT, mean annual temperature; STN, soil total nitrogen concentration; STP, soil total phosphorus concentration.

图2 中国北方灌丛凋落物碳(A-D)、氮(E-H)、磷(I-L)密度与环境的关系。不同线型和缩写的意义见图1。

Fig. 2 Litter carbon (C) (A-D), nitrogen (N) (E-H) and phosphorus (P) (I-L) densities for shrublands of Northern China in relation to environmental factors. Please see Fig. 1 for the meaning of different line types and abbreviations.

图3 中国北方灌丛土壤有机碳(A, B)、氮(C, D)、磷(E, F)密度与气候的关系。不同线型和缩写的意义见图1。

Fig. 3 Soil organic carbon (C) (A, B), nitrogen (N) (C, D) and phosphorus (P) (E, F) densities for shrubland of Northern China in relation to climatic factors. Please see Fig. 1 for the meaning of different line types and abbreviations.

表2 中国北方主要灌丛的碳、氮、磷储量

Table 2 Carbon (C), nitrogen (N) and phosphorus (P) storage of major shrublands in Northern China

灌丛植被型 Shrubland types	落叶阔叶灌丛 Deciduous broadleaf shrublands	稀疏灌丛 Sparse shrublands	总计 Total
面积 Area (10⁴ hm²)	1 828.6	1 050.4	2 879.0
碳储量 C storage (Tg)	1 537.6	183.5	1 721.1
生物量 Biomass	118.6	9.8	128.4
凋落物 Litter	8.2	0.2	8.4
土壤有机碳 Soil organic C	1 410.8	173.5	1 584.3
氮储量 N storage (Tg)	137.1	27.8	164.9
生物量 Biomass	2.8	0.3	3.1
凋落物 Litter	4.5	0.0	4.5
土壤 Soil	133.8	27.5	161.3
磷储量 P storage (Tg)	80.7	44.1	124.8
生物量 Biomass	0.2	0.0	0.2
凋落物 Litter	2.7	0.0	2.7
土壤 Soil	80.5	44.1	124.6

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中国北方温带灌丛生态系统碳、氮、磷储量

Storage of carbon, nitrogen and phosphorus in temperate shrubland ecosystems across Northern China

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