Effect of grazing enclosure on the priming effect and temperature sensitivity of soil C mineralization in Leymus chinensis grasslands, Inner Mongolia, China

doi:10.3724/SP.J.1258.2012.01226

Abstract

Abstract:

Aims The temperature sensitivity and priming effect of soil respiration, or soil carbon (C) mineralization, have been important topics for global change ecology in recent decades. They can provide new evidence on the controlling mechanisms of soil respiration in future climate change. Our objective was to investigate the effect of grazing enclosure on the priming effect and temperature sensitivity of soil C mineralization in grasslands. Methods We selected three Leymus chinensis grasslands subjected to different grazing-exclusion durations in Inner Mongolia, i.e., grazing-free grassland (FG0), 11-year fenced grassland (FG11), and 31-year fenced grassland (FG31). We incubated the soils at 0, 5, 10, 15, 20, 25 °C, respectively. Important findings Enclosure duration, glucose addition, incubation temperatures and incubation time all had significant impact on soil C mineralization rate, and there were significant interaction effects among these factors (p < 0.000 1). The cumulative emission of soil C mineralization was significantly higher in FG0 than in FG11 and FG31, and showed the same trend after glucose addition. Long-term enclosure decreased the priming effect of soil C mineralization in L. chinensis grasslands. After glucose addition, the priming effect of soil C mineralization was about 2.28-9.01 times and increased with increasing temperature in 7-day incubation. In 56-day incubation, the priming effect was in the range of 2.21-5.10, with the highest value at 10 or 15 °C. The temperature sensitivity of soil C mineralization can be well depicted by classical exponential equations, and the temperature sensitivity index (Q₁₀) of soil C mineralization was higher in FG0 than in FG11 and FG31. Glucose addition significantly increased Q₁₀, which indicated that soil microbial respiration under glucose addition was more affected by temperature. In conclusion, long-term enclosure reduced soil C mineralization rates, temperature sensitivity and priming effect in Inner Mongolian grasslands, which indicated that these long-term fenced grasslands have the capacity to further sequester CO₂ from the atmosphere.

Key words: carbon sequestration, enclosure, grassland, land-use type, priming effect, Q₁₀, temperature sensitivity

DAI Jing-Zhong, WEI Zhi-Jun, HE Nian-Peng, WANG Ruo-Meng, WEN Xue-Hua, ZHANG Yun-Hai, ZHAO Xiao-Ning, YU Gui-Rui. Effect of grazing enclosure on the priming effect and temperature sensitivity of soil C mineralization in Leymus chinensis grasslands, Inner Mongolia, China[J]. Chin J Plant Ecol, 2012, 36(12): 1226-1236.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.plant-ecology.com/EN/10.3724/SP.J.1258.2012.01226

https://www.plant-ecology.com/EN/Y2012/V36/I12/1226

Figures/Tables 8

References 38

1	Allison SD, Wallenstein MD, Bradford MA ( 2010). Soil- carbon response to warming dependent on microbial physiology. Nature Geoscience, 3, 336-340.
2	Bai JB ( 白洁冰), Xu XL ( 徐兴良), Song MH ( 宋明华), He YT ( 何永涛), Jiang J ( 蒋婧), Shi PL ( 石培礼 ) ( 2011). Effects of temperature and added nitrogen on carbon mineralization in alpine soils on the Tibetan Plateau. Ecology and Environmental Sciences (生态环境学报), 20, 855-859. (in Chinese with English abstract)
3	Balogh J, Pintér K, Foti S, Cserhalmi D, Papp M, Nagy Z ( 2011). Dependence of soil respiration on soil mois- ture, clay content, soil organic matter, and CO₂ uptake in dry grasslands. Soil Biology & Biochemistry, 43, 1006-1013.
4	Chen CM ( 陈春梅), Xie ZB ( 谢祖彬), Zhu JG ( 朱建国 ) ( 2006). Advances in research on priming effect of soil organic carbon. Soils (土壤), 38, 359-365. (in Chinese with English abstract)
5	Chen QS ( 陈全胜), Li LH ( 李凌浩), Han XG ( 韩兴国), Yan ZD ( 阎志丹), Wang YF ( 王艳芬), Zhang Y ( 张焱), Xiong XG ( 熊小刚), Chen SP ( 陈世苹), Zhang LX ( 张丽霞), Gao YZ ( 高英志), Tang F ( 唐芳), Yang J ( 杨晶), Dong YS ( 董云社 ) ( 2004). Temperature sensitivity of soil respiration in relation to soil mois- ture in 11 communities of typical temperate steppe in Inner Mongolia. Acta Ecologica Sinica (生态学报), 24, 831-836. (in Chinese with English abstract)
6	Chen ZZ ( 陈佐忠), Wang SP ( 汪诗平), Wang YF ( 王艳芬 ) (2000). Typical Grassland Ecosystems in China (中国典型草地生态系统). Science Press, Beijing. (in Chinese)
7	Dalenberg JW, Jager G ( 1981). Priming effect of small glucose additions to ¹⁴C-labeled soil . Soil Biology & Biochemistry, 13, 219-223.
8	Fan FL ( 范分良), Huang PR ( 黄平容), Tang YJ ( 唐勇军), Li ZJ ( 李兆君), Liang YC ( 梁永超 ) ( 2012). Altered microbial communities change soil respiration rates and their temperature sensitivity. Environmental Sciences (环境科学), 33, 932-937. (in Chinese with English abstract)
9	Fang CM, Smith P, Moncrieff JB, Smith JU ( 2005). Similar response of labile and resistant soil organic matter pools to changes in temperature. Nature, 433, 57-59.
10	Gershenson A, Bader NE, Cheng WX ( 2009). Effects of substrate availability on the temperature sensitivity of soil organic matter decomposition. Global Change Biology, 15, 176-183.
11	Hamer U, Marschner B ( 2005). Priming effects in different soil types induced by fructose, alanine, oxalic acid and catechol additions. Soil Biology & Biochemistry, 37, 445-454.
12	He NP, Han XG, Yu GR, Chen QS, Justin W ( 2011 a). Divergent changes in plant community composition under 3-decade grazing exclusion in continental steppe. PLOS ONE, 6(11), e26506. doi: 10.1371/ journal.pone.0026506. DOI URL
13	He NP ( 何念鹏), Han XG ( 韩兴国), Yu GR ( 于贵瑞 ) ( 2011). Carbon and nitrogen sequestration rate in long-term fenced grasslands in Inner Mongolia, China. Acta Ecologica Sinica (生态学报), 31, 4270-4276. (in Chinese with English abstract)
14	He NP ( 何念鹏), Han XG ( 韩兴国), Yu GR ( 于贵瑞), Dai JZ ( 代景忠 ) ( 2012). Effects of prescribed fire on carbon sequestration of long-term grazing-excluded grasslands in Inner Mongolia. Acta Ecologica Sinica (生态学报), 32, 4388-4395. (in Chinese with English abstract)
15	He NP, Yu Q, Wu L, Wang YS, Han XG ( 2008). Carbon and nitrogen store and storage potential as affected by land-use in a Leymus chinensis grassland of northern China. Soil Biology & Biochemistry, 40, 2952-2959.
16	He NP, Zhang YH, Dai JZ, Han XG, Baoyin T, Yu GR ( 2012). Land-use impact on soil carbon and nitrogen sequestration in typical steppe ecosystems, Inner Mongolia. Journal of Geographical Sciences, 22, 859-873.
17	He NP, Zhang YH, Yu Q, Cheng QS, Pan QM, Zhang GM, Han XG ( 2011b). Grazing intensity impacts soil carbon and nitrogen storage of continental steppe. Ecosphere, 2, doi: 10.1890/ES1810-00017.00011.
18	IPCC(Intergovernmental Panel on Climate Change) ( 2007). Contribution of working group 1 to the fourth assessment report of the intergovernmental panel on climate change. In: Solomon S, Qin D, Manning M, Chen Z, Marquis M, Averyt KB, Tignor M, Miller HL eds. Climatic Change in 2007: The Physical Science Basis. Cambridge University Press, Cambridge, UK.
19	Jia BR, Zhou GS ( 2009). Integrated diurnal soil respiration model during growing season of a typical temperate steppe: effects of temperature, soil water content and biomass production. Soil Biology & Biochemistry, 41, 681-686.
20	Jia BR, Zhou GS, Yuan WP ( 2007). Modeling and coupling of soil respiration and soil water content in fenced Leymus chinensis steppe, Inner Mongolia. Ecological Modeling, 201, 157-162.
21	Kuzyakov Y ( 2010). Priming effects: interactions between living and dead organic matter. Soil Biology & Bioche- mistry, 42, 1363-1371.
22	Lal R ( 2004). Soil carbon sequestration impacts on global climate change and food security. Science, 304, 1623-1627.
23	Laura RD ( 1975). On the “priming effect” of organic materials. Soil Science Society of America Journal, 39, 807-808.
24	Liu LX ( 刘立新), Dong YS ( 董云社), Qi YC ( 齐玉春), Zhou LX ( 周凌晞 ) ( 2007). Study on the temperature sensitivity of soil respiration in Xilin River of Inner Mongolia, China. China Environmental Science (中国环境科学), 27, 226-230. (in Chinese with English abstract)
25	Lloyd J, Taylor JA ( 1994). On the temperature dependence of soil respiration. Functional Ecology, 8, 315-323.
26	Luo YQ, Wan SQ, Hui DF, Wallace LL ( 2001). Acclimati- zation of soil respiration to warming in a tall grass prairie. Nature, 413, 622-625.
27	Mahecha MD, Reichstein M, Carvalhais N, Lasslop G, Lange H, Seneviratne SI, Vargas R, Ammann C, Arain MA, Cescatti A, Janssens IA, Migliavacca M, Monta- gnani L, Richardson AD ( 2010). Global convergence in the temperature sensitivity of respiration at ecosystem level. Science, 329, 838-840.
28	Mcintosh RP, Odum EP ( 1969). Ecological succession. Science, 166, 403-404.
29	Nottingham AT, Griffiths H, Chamberlain PM, Stott AW, Tanner EVJ ( 2009). Soil priming by sugar and leaf- litter substrates: a link to microbial groups. Applied Soil Ecology, 42, 183-190.
30	Odum EP ( 1957). The ecosystem approach in the teaching of ecology illustrated with sample class data. Ecology, 38, 531-535.
31	Perkins DM, Yvon-Durocher G, Demars BOL, Reiss J, Pichler DE, Friberg N, Trimmer M, Woodward G ( 2012). Consistent temperature dependence of respira- tion across ecosystems contrasting in thermal history. Global Change Biology, 18, 1300-1311.
32	Sierra CA ( 2012). Temperature sensitivity of organic matter decomposition in the Arrhenius equation: some theore- tical considerations. Biogeochemistry, 108, 1-15.
33	von Lützow M, Kögel-Knabner I ( 2009). Temperature sensitivity of soil organic matter decomposition: What do we know? Biology and Fertility of Soils, 46, 1-15.
34	Wu L, He N, Wang Y, Han X ( 2008). Storage and dynamics of carbon and nitrogen in soil after grazing exclusion in Leymus chinensis grasslands of northern China. Journal of Environmental Quality, 37, 663-668. DOI URL PMID
35	Yang QP ( 杨庆朋), Liu HS ( 刘洪升), Wang JS ( 王劲松), Liu LX ( 刘丽香), Chi YG ( 迟永刚), Zheng YP ( 郑云普 ) ( 2011). Impact factors and uncertainties of the temperature sensitivity of soil respiration. Acta Ecologica Sinica (生态学报), 31, 2301-2311. (in Chinese with English abstract)
36	Zhang JB ( 张金波), Song CC ( 宋长春), Yang WY ( 杨文燕 ) ( 2005). Temperature sensitivity of soil respiration and its effecting factors in the different land use. Acta Scientiae Circumstantiae (环境科学学报), 25, 1537-1542. (in Chinese with English abstract)
37	Zhou JZ, Xue K, Xie JP, Deng Y, Wu LY, Cheng XH, Fei SF, Deng SP, He ZL, van Nostrand JD, Luo YQ ( 2012). Microbial mediation of carbon-cycle feedbacks to climate warming. Nature Climate Change, 2, 106-110.
38	Zhu PL ( 朱培立), Huang DM ( 黄东迈 ) ( 1994). Discussion on priming effect of soil nitrogen. Scientia Agricultura Scinica (中国农业科学), 27, 45-52. (in Chinese with English abstract)

	地上生物量 Aboveground biomass (g·m^-2)	地表凋落物 Aboveground litter (g·m^-2)	土壤有机碳 Soil organic carbon (g·kg^-1)	土壤全氮 Soil total nitrogen (g·kg^-1)	土壤全磷 Soil total phosphorus (g·kg^-1)	土壤pH Soil pH
自由放牧草地 (FG0) Grazing-free grassland	60.3 ± 20.6^a	30.5 ± 13.8^a	13.4 ± 0.5^a	1.4 ± 0.1^a	0.22 ± 0.02^a	8.2 ± 0.3^a
封育11年草地 (FG11) 11-year fenced grassland	171.6 ± 9.6^b	82.8 ± 18.3^b	18.2 ± 0.5^b	1.7 ± 0.1^a	0.30 ± 0.01^b	7.7 ± 0.2^b
封育31年草地 (FG31) 31-year fenced grassland	148.3 ± 41.3^b	121.1 ± 32.7^c	18.8 ± 2.2^b	1.4 ± 0.7^a	0.28 ± 0.01^b	7.2 ± 0.3^c
F	23.39	19.46	20.31	0.89	69.64	17.14
p	<0.001	<0.001	<0.001	0.437	<0.001	<0.001

	地上生物量 Aboveground biomass (g·m^-2)	地表凋落物 Aboveground litter (g·m^-2)	土壤有机碳 Soil organic carbon (g·kg^-1)	土壤全氮 Soil total nitrogen (g·kg^-1)	土壤全磷 Soil total phosphorus (g·kg^-1)	土壤pH Soil pH
自由放牧草地 (FG0) Grazing-free grassland	60.3 ± 20.6^a	30.5 ± 13.8^a	13.4 ± 0.5^a	1.4 ± 0.1^a	0.22 ± 0.02^a	8.2 ± 0.3^a
封育11年草地 (FG11) 11-year fenced grassland	171.6 ± 9.6^b	82.8 ± 18.3^b	18.2 ± 0.5^b	1.7 ± 0.1^a	0.30 ± 0.01^b	7.7 ± 0.2^b
封育31年草地 (FG31) 31-year fenced grassland	148.3 ± 41.3^b	121.1 ± 32.7^c	18.8 ± 2.2^b	1.4 ± 0.7^a	0.28 ± 0.01^b	7.2 ± 0.3^c
F	23.39	19.46	20.31	0.89	69.64	17.14
p	<0.001	<0.001	<0.001	0.437	<0.001	<0.001

	df	F	p
封育时间 Enclosure duration (G)	2	1 299.1	<0.000 1
葡萄糖添加 Glucose addition (A)	1	15 682.9	<0.000 1
培养温度 Incubation temperature (T)	5	1 716.5	<0.000 1
培养时间 Incubation time (I)	14	455.4	<0.000 1
G × A	2	618.3	<0.000 1
G × T	10	131.5	<0.000 1
G × I	28	15.9	<0.000 1
A × T	5	960.3	<0.000 1
A × I	14	383.9	<0.000 1
T × I	70	68.1	<0.000 1
G × A × T	10	59.5	<0.000 1
G × A × I	28	11.6	<0.000 1
G × T × I	140	7.3	<0.000 1
A × T × I	70	55.8	<0.000 1
G × A × T × I	140	6.7	<0.000 1

	df	F	p
封育时间 Enclosure duration (G)	2	1 299.1	<0.000 1
葡萄糖添加 Glucose addition (A)	1	15 682.9	<0.000 1
培养温度 Incubation temperature (T)	5	1 716.5	<0.000 1
培养时间 Incubation time (I)	14	455.4	<0.000 1
G × A	2	618.3	<0.000 1
G × T	10	131.5	<0.000 1
G × I	28	15.9	<0.000 1
A × T	5	960.3	<0.000 1
A × I	14	383.9	<0.000 1
T × I	70	68.1	<0.000 1
G × A × T	10	59.5	<0.000 1
G × A × I	28	11.6	<0.000 1
G × T × I	140	7.3	<0.000 1
A × T × I	70	55.8	<0.000 1
G × A × T × I	140	6.7	<0.000 1

处理 Treatment	基质质量指数 Substrate quality index				Q₁₀
	培养前7天 Duration of 7 days incubation		培养前56天 Duration of 56 days incubation		培养前7天 Duration of 7 days incubation		培养前56天 Duration of 56 days incubation
	F	p	F	p	F	p	F	p
封育 Enclosure (G)	22.7	<0.000 1	123.5	<0.000 1	113.6	<0.000 1	86.2	<0.000 1
葡萄糖添加 Glucose addition (A)	378.8	<0.000 1	2 076.1	<0.000 1	828.3	<0.000 1	101.6	<0.000 1
G × A	4.9	0.020 1	108.3	<0.000 1	17.2	0.000 1	9.2	0.001 8