SOIL RESPIRATION IN NATURAL MIXED (BETULA PLATYPHYLLA AND POPULUS DAVIDIANA) SECONDARY FOREST AND PRIMARY BROAD-LEAVED KOREAN PINE FOREST

doi:10.17521/cjpe.2007.0042

Abstract

Abstract:

Aims Soil respiration is an important component of terrestrial carbon budgets, but the effects of land use on soil respiration are inadequately understood. The objective of this study was to examine soil respiration in natural mixed (Betula platyphylla and Populus davidiana) secondary forest and primary Korean pine (Pinus koraiensis) forest in the Changbai Mountain, China.
Methods An infrared gas analyzer (IGA) linked to a 50 cm×50 cm×15 cm chamber without a bottom was used to measure soil respiration. Three 50 cm×50 cm steel frames were inserted into the soil to 3-5 cm in plots randomly selected one day prior to measurement. When measuring, the chamber was put on the steel frame to make a closed container capturing CO₂ from the soil surface. Soil respiration was measured every 20-30 days during the 2003-2005 growing seasons.
Important findings Diurnal variations of soil respiration were mainly affected by soil temperatures, and maximum soil respiration appeared 1-2 hours earlier in secondary than in primary forests. Soil respiration was the greatest in August. There was a significant exponential relationship with soil temperature at 5 cm depth, but no significant relationship with soil water content in both plots. During the growing season (May-September), total CO₂ efflux from natural secondary forests was estimated as 3 449.4 g·m^-2, about 1.3 times that in primary forests (2 674.4 g·m^-2). The secondary forests had higher soil temperature and lower soil water content, which enhanced roots activity and soil microorganism metabolism.

Key words: primary Korean pine forest, natural secondary forest, soil respiration, soil temperature, soil water content

WANG Xu, ZHOU Guang-Sheng, JIANG Yan-Ling, JIA Bing-Rui, WANG Feng-Yu, ZHOU Li. SOIL RESPIRATION IN NATURAL MIXED (BETULA PLATYPHYLLA AND POPULUS DAVIDIANA) SECONDARY FOREST AND PRIMARY BROAD-LEAVED KOREAN PINE FOREST[J]. Chin J Plant Ecol, 2007, 31(3): 348-354.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2007.0042

https://www.plant-ecology.com/EN/Y2007/V31/I3/348

Figures/Tables 8

Table 1 Sites description

土地类型 Land type	地下生物量 Belowground biomass (g·m^-2)	凋落物量 Litters (g·m^-2)	有机碳 Organic C (mg·g^-1)	全氮 Total N (mg·g^-1)	碳氮比 C:N ratio	容重 Bulk density (g·m^-3)	pH值 pH value
阔叶红松林 Korean pine forest	1 798.0	1 106.7	125.6	10.6	11.9	0.64	4.9
天然次生林 Natural secondary forest	1 661.3	935.6	81.3	7.3	11.2	0.81	5.2

Fig.1 Daily variations of soil respiration at natural secondary forest and primary forest plots

Table 2 Correlative coefficients between soil respiration and temperatures at natural secondary forest and primary forest plots

森林类型 Forest type	Ta	T₀	T₅	T₁₀	T₁₅	T₂₀
次生林Secondary forest	0.648	0.692	0.730	0.435	0.203	-0.487
原始林Primary forest	0.424	0.585	0.937	0.819	0.525	0.230

Fig.2 Seasonal variations of soil respiration at natural secondary forest and primary Korean pine forest plots

Fig.3 Relationships between soil respiration rate and soil temperature at the depth of 5 cm

Fig.4 Comparison between soil water contents (during the depth 0-10 cm) at natural secondary forest and primary forest plots

Fig.5 Relationships between soil respiration and soil water content (during the depth 0-10 cm) at natural secondary forest and primary forest plots

Fig.6 Regressive relationships of soil temperature at 5 cm depth observed between at the experimental plots and meteorological station

References 18

[1]	Chi ZW(迟振文), Zhang FS(张凤山), Li XY(李晓晏)(1981). The primary study on water-heat conditions of forest ecosystem on northern slope of Changbai Mountain. Research of Foest Ecosystem (森林生态系统研究), 2, 167-178. (in Chinese with English abstract)
[2]	de Jong E, Schappert HJV, Macdonald KB(1974). Carbon dioxide evolution from virgin and cultivated soil as affected by management practices and climate. Canadian Journal of Soil Science, 54, 299-307.
[3]	Ewel KC, Cropper JWP, Gholz HL(1987). Soil CO₂ evolution in Florida slash pine plantations.Ⅰ. Changes through time. Canadian Journal of Forest Research, 17, 325-329.
[4]	Fang C, Moncrieff JB(2001). The dependence of soil CO₂ efflux on temperature. Soil Biology and Biochemistry, 33, 155-165.
[5]	Huang CC(黄承才), Ge Y(葛滢), Chang J(常杰), Lu R(卢蓉), Xu QS(徐青山)(1999). Studies on the soil respiration of three woody plant communities in the east mid-subtropical zone, China. Acta Ecologica Sinica (生态学报), 19, 324-328. (in Chinese with English abstract)
[6]	Jiang GM(蒋高明), Huang YX(黄银晓)(1997). A study on the measurement of CO₂ emission from the soil of the simulated Quercus liaotungensis forest sampled from Beijing Mountain areas. Acta Ecologica Sinica (生态学报), 17, 477-482. (in Chinese with English abstract)
[7]	Li LH(李凌浩), Chen ZZ(陈佐忠)(1998). Soil respiration in grassland communities in the world. Chinese Journal of Ecology (生态学杂志), 17(4), 45-51. (in Chinese with English abstract)
[8]	Liu Y(刘颖), Han SJ(韩士杰), Hu YL(胡艳玲), Dai GH(戴冠华)(2005). Effects of soil temperature and humidity on soil respiration rate under Pinus sylvestriformis forest. Chinese Journal of Applied Ecology (应用生态学报), 16, 1581-1585. (in Chinese with English abstract)
[9]	Lloyd J, Taylor JA(1994). On the temperature-dependence of soil respiration. Functional Ecology, 8, 315-323.
[10]	Luo TS(骆土寿), Chen BF(陈步峰), Li YD(李意德), Lin MX(林明献), Zhou GY(周光益), Chen DX(陈德祥), Qiu JR(邱坚锐)(2001). Litter and soil respiration in a tropical mountain in rain forest in Jianfengling,Hainan Island. Acta Ecologica Sinica (生态学报), 21, 2013-2017. (in Chinese with English abstract)
[11]	Post WM, Emanuel WR, Zinke PJ, Stangenberger AG(1982). Soil pool and world life zones. Nature, 298, 156-159.
[12]	Raich JW, Schlesinger WH(1992). The global carbon dioxide flux in soil respiration and its relationship to vegetation and climate. Tellus, 44B, 81-99.
[13]	Wang CR, Wu J, Liang ZB, Huang GH(2004). Soil carbon dioxide fluxes of a typical broad-leaved/Korean pine mixed forest in Changbai Mountain, China. Journal of Forestry Research, 15, 268-272. DOI URL
[14]	Wang Z(王战), Xu ZB(徐振邦), Li X(李昕), Peng YS(彭永山), Qian JJ(钱家驹), Liu ZD(刘子德), Yang Y(杨野), Wei CL(魏成录), Li YZ(李延增)(1980). The main forest types and their features of community stracture in northern slopo of Changbai Mountain. Research of Forest Ecosystem (森林生态系统研究), 1, 25-42. (in Chinese)
[15]	Wu JG(吴建国), Zhang XQ(张小全), Xu DY(徐德应)(2003). The temporal variations of soil respiration under different land use in Liupan Mountain forest zone. Environmental Science (环境科学), 24(6), 23-32.(in Chinese with English abstract)
[16]	Xu ZB (徐振邦), Li X (李昕), Dai HC (戴洪才), Tan ZX (谭征祥), Zhang YP (章依平), Guo XF (郭杏芬), Peng YS (彭永山), Dai LM (代力民) (1985). Study on biomass of the broad-leaved Korean pine forest in Changbai Mountain. Research of Forest Ecosystem (森林生态系统研究), 5, 33-47. (in Chinese with English abstract)
[17]	Yang YS(杨玉盛), Chen GS(陈光水), Wang XG(王小国), Xie JS(谢锦升), Gao R(高人), Li Z(李震), Jin Z(金钊)(2005). Response of soil CO₂ efflux to forest conversion in subutropical zone of China. Acta Ecologica Sinica (生态学报), 25, 1684-1690. (in Chinese with English abstract)
[18]	Zhou GS(周广胜), Wang YH(王玉辉), Jiang YL(蒋延玲), Yang LM(杨利民) (2002). Conversion of terrestrial ecosystems and carbon cycling. Acta Photoecologica Sinica (植物生态学报), 26, 250-254.(Chinese with English abstract)