1. Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;2. University of Chinese Academy of Sciences, Beijing 100049, China 在期刊界中查找 在百度中查找 在本站中查找
Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China 在期刊界中查找 在百度中查找 在本站中查找
Affiliation:
South China Botanical Garden,South China Botanical Garden
In order to understand the effects of precipitation pattern on litter-fall in lower subtropical evergreen broad-leaved forest, a field precipitation manipulation experiment at Heshan National Forest Research Station (Guangdong Province, China) was designed to simulate decreasing dry-season (October-March) and spring (April-May) rainfall and the litter-fall respones in the forest was studied. The results showed that annual litter-fall of the experimental forest was 9.24 t hm-2, of which leaf litter was the main composition at different stages, accounting for 50.7%-69.3% of the total. The decreasing dry-season rainfall (DD) treatment significantly reduced leaf litter production (P<0.01). The whole-year litter production was also reduced by 10.3% under the DD treatment compared to the control, but not statistically significant. Decreasing spring rainfall (ED) also reduced flower-, fruit-, and leaf-litter as well as the total during the spring time, but the whole-year litter production was increased by 11.3% compared to the control. No statistically significant difference of ED effects on the spring and wholeyear litter production was found. Neither DD nor ED treatments had obvious impacts on the quality of leaf litter, but DD treatment significantly reduced lignin content in leaf litter of Michelia macclurei (P<0.05). Therefore, the changes in precipitation pattern could influence the soil carbon sink in the lower subtropical forests of China.
[1] Hoeppner S S, Dukes J S. Interactive responses of old-field plant growth and composition to warming and precipitation [J]. Glob Change Biol, 2012, 18(5): 1754-1768.
[2] Beier C, Beierkuhnlein C, Wohlgemuth T, et al. Precipitation manipulation experiments: Challenges and recommendations for the future [J]. Ecol Lett, 2012, 15(8): 899-911.
[3] Battipaglia G, De Micco V, Brand W A, et al. Drought impact on water use efficiency and intra-annual density fluctuations in Erica arborea on Elba (Italy) [J]. Plant Cell Environ, 2014, 37(2): 382-391.
[4] Flanagan L B, Farquhar G D. Variation in the carbon and oxygen isotope composition of plant biomass and its relationship to wateruse efficiency at the leaf-and ecosystem-scales in a northern Great Plains grassland [J]. Plant Cell Environ, 2014, 37(2): 425-438.
[5] Morgan J, Pataki D, Körner C, et al. Water relations in grassland and desert ecosystems exposed to elevated atmospheric CO2 [J]. Oecologia, 2004, 140(1): 11-25.
[6] Seneviratne S I, Corti T, Davin E L, et al. Investigating soil moistureclimate interactions in a changing climate: A review [J]. Earth-Sci Rev, 2010, 99(3): 125-161.
[7] Christensen J H, Christensen O B. A summary of the prudence model projections of changes in European climate by the end of this century [J]. Clim Change, 2007, 81(1): 7-30.
[8] Fang J Y, Piao S L, He J S, et al. Increasing terrestrial vegetation activity in China, 1982-1999 [J]. Sci China Series C Life Sci, 2004, 47(3): 229-240.
[9] Peñuelas J, Filella I. Phenology: Responses to a warming World[J]. Science, 2001, 294(5543): 793-795.
[10] Zhou G Y, Wei X H, Wu Y P, et al. Quantifying the hydrological responses to climate change in an intact forested small watershed in southern China [J]. Glob Change Biol, 2011, 17(12): 3736-3746.
[11] Piao S L, Fang J Y, Ciais P, et al. The carbon balance of terrestrial ecosystems in China [J]. Nature, 2009, 458(7241): 1009-1013.
[12] Heim A, Frey B. Early stage litter decomposition rates for Swiss forests [J]. Biogeochemistry, 2004, 70(3): 299-313.
[13] Walse C, Berg B, Sverdrup H. Review and synthesis of experimental data on organic matter decomposition with respect to the effect of temperature, moisture, and acidity [J]. Environ Rev, 1998, 6(1): 25-40.
[14] Couteaux M M, Bottner P, Berg B. Litter decomposition, climate and litter quality [J]. Trends Ecol Evol, 1995, 10(2): 63-66.
[15] Swift M J, Heal O W, Anderson J M. Decomposition in Terrestrial Ecosystems [M]. California: University of California Press, 1979: 118-163.
[16] Aerts R. Climate, leaf litter chemistry and leaf litter decomposition in terrestrial ecosystems: A triangular relationship [J]. Oikos, 1997, 79(3): 439-449.
[17] Pressland A J. Litter production and decomposition from an overstorey of Eucalyptus spp. on 2 catchments in the New-England region of New-South-Wales [J]. Aust J Ecol, 1982, 7(2): 171-180.
[18] Travers S K, Eldridge D J. Increased rainfall frequency triggers an increase in litter fall rates of reproductive structures in an arid eucalypt woodland [J]. Aust J Ecol, 2013, 38(7): 820-830.
[19] Zhang L, Xiao J F, Li J, et al. The 2010 spring drought reduced primary productivity in southwestern China [J/OL]. Environ Res Lett, 2012, 7(4): 045706, doi: 10.1088/1748-9326/7/4045706.
[20] Nepstad D C, Moutinho P, Dias M B, et al. The effects of partial throughfall exclusion on canopy processes, aboveground production, and biogeochemistry of an Amazon forest [J]. J Geophys Res-Atmos, 2002, 107(D20): LBA 53-1-LBA 53-18.
[21] Lola da Costa A C, Galbraith D, Almeida S, et al. Effect of 7 yr of experimental drought on vegetation dynamics and biomass storage of an eastern Amazonian rainforest [J]. New Phytol, 2010, 187(3): 579-591.
[22] Zhang D Q, Ye W H, Yu Q F, et al. The litter-fall of representative forests of successional series in Dinghushan [J]. Acta Ecol Sin, 2000, 20(6): 938-944. 张德强, 叶万辉, 余清发, 等. 鼎湖山演替系列中代表性森林凋 落物研究 [J]. 生态学报, 2000, 20(6): 938-944.
[23] Dong M. Survey Observation and Analysis of Terrestrial Biocommunities[M]. Beijing: Standards Press of China, 1997: 152-153. 董明. 陆地生物群落调查观测与分析 [M]. 北京: 中国标准出 版社, 1997: 152-153.
[24] Liu G S. Soil Physical and Chemical Analysis & Description of Soil Profiles [M]. Beijing: Standards Press of China, 1996: 34-40. 刘光崧. 土壤理化分析与剖面描述 [M]. 北京: 中国标准出版 社, 1996: 34-40.
[25] Ryan M G, Melillo J M, Ricca A. A comparison of methods for determining proximate carbon fractions of forest litter [J]. Can J For Res, 1990, 20(2): 166-171.
[26] Zhou X, Ge Z M, Kellomaki S, et al. Effects of elevated CO2 and temperature on leaf characteristics, photosynthesis and carbon storage in aboveground biomass of a boreal bioenergy crop (Phalaris arundinacea L.) under varying water regimes [J]. GCB Bioenergy, 2011, 3(3): 223-234.
[27] Yasumura Y, Hikosaka K, Hirose T. Resource allocation to vegetative and reproductive growth in relation to mast seeding in Fagus crenata [J]. For Ecol Manag, 2006, 229(1/2/3): 228-233.
[28] Rustad L E, Campbell J L, Marion G M, et al. A meta-analysis of the response of soil respiration, net nitrogen mineralization, and aboveground plant growth to experimental ecosystem warming[J]. Oecologia, 2001, 126(4): 543-562.
[29] Lambers H, Chapin F S, Pons T L. Plant Physiological Ecology[M]. New York, NY: Springer, 2008: 113-144.
[30] Feng Q H, Shi Z M, Dong L L. Response of plant functional traits to environment and its application [J]. Sci Silv Sin, 2008, 44(4): 125-131. 冯秋红, 史作民, 董莉莉. 植物功能性状对环境的响应及其应 用 [J]. 林业科学, 2008, 44(4): 125-131.
[31] Erhagen B, Oquist M, Sparrman T, et al. Temperature response of litter and soil organic matter decomposition is determined by chemical composition of organic material [J]. Glob Change Biol, 2013, 19(12): 3858-3871.
[32] Tambussi E A, Bartoli C G, Beltrano J, et al. Oxidative damage to thylakoid proteins in water-stressed leaves of wheat (Triticum aestivum) [J]. Physiol Plant, 2000, 108(4): 398-404.
[33] Alvarez S, Marsh E L, Schroeder S G, et al. Metabolomic and proteomic changes in the xylem sap of maize under drought [J]. Plant Cell Environ, 2008, 31(3): 325-340.
[34] Onillon B, Durand J L, Gastal F, et al. Drought effects on growth and carbon partitioning in a tall fescue sward grown at different rates of nitrogen-fertilization [J]. Eurp J Agron, 1995, 4(1): 91-99.
[35] Gonzalez-Dugo V, Durand J L, Gastal F, et al. Short-term response of the nitrogen nutrition status of tall fescue and Italian ryegrass swards under water deficit [J]. Aust J Agri Res, 2005, 56(11): 1269-1276.