摘要细根一般指直径≤ 2 mm 的根,是树木吸收养分和水分的主要器官,也是碳水化合物的贮藏器官。随着人们对森林生态系统中细根重要性的不断认识,国内外学者们对树木细根的空间变异和季节动态及其影响因子已有初步研究。总结前人研究结果,细根时空动态大体规律为细根生长量大多集中在表土层中,并随土层深度的增加呈指数递减趋势,不同森林类型根系垂直分布存在差异。细根的生长与死亡具有显著的季节动态格局,因不同纬度、水分条件存在差异。细根峰值的出现的时间一般有两种情况,一种是春季和秋季都具有峰值的双峰型,另一种是在春季或者夏秋季出现峰值的单峰型。
李向飞,白玉荣,韩照日格图,宋来萍,景 璐,齐雅静,王立军. 评述细根的时空动态及其影响因子[J]. 温带林业研究, 2020, 3(4): 57-59.
LI Xiang-fei, BAI Yu-rong, HAN Zhao-rigetu, SONG Lai-ping, JING Lu, QI Ya-jing, WANG Li-jun. Spatio-temporal Dynamics and Influencing Factors of Fine Roots. 温带林业研究, 2020, 3(4): 57-59.
[1] Eissenstat D M, Yanai R D. The ecology of root lifespan [M]// Advances in ecological research. Academic Press,1997,27:1-60.
[2] Vogt K A, Vogt D J,Palmiotto P A, et al. Review of root dynamics in forest ecosystems grouped by climate,climatic forest type and species[J]. Plant and Soil,1995,187(2):159-219.
[3] Bloomfield J. Tree root turnover and senescence[J]. Plant Roots : the Hidden Half, 1996 : 363-381.
[4] Burke M K,Raynal D J. Fine root growth phenology, production, and turnover in a northern hardwood forest ecosystem[J]. Plant and Soil,1994,162(1):135-146.
[5] Jackson R B,Canadell J,Ehleringer J R,et al. A global analysis of root distributions for terrestrial biomes[J]. Oecologia,1996,108(3):389-411.
[6] Fischer S, Brienza Jr S, Vielhauer K. Root distribution in enriched fallow vegetations in NE Amazonia, Brazil [J]. Proceedings of the Third SH IFT2 Workshop M anaus, 1998 :15-9.
[7] 张小全,吴可红 . 森林细根生产和周转研究 [J]. 林业科学, 2001,37(3):126-138.
[8] Fahey T J,Hughes J W. Fine root dynamics in a northern hardwood forest ecosystem, Hubbard Brook Experimental Forest , NH[J]. Journal of Ecology,1994 :533-548.
[9] Gill R A,Jackson R B. Global patterns of root turnover for terrestrial ecosystems [J]. New Phytologist,2000,147(1):13-31.
[10] 李凌浩,林 鹏,邢雪荣 . 武夷山甜储林细根生物量和 生长量研究 [J]. 应用生态学报,1998,9(4):337-340.
[11] Quan X,Wang C,Zhang Q, et al. Dynamics of fine roots in five Chinese temperate forests[J]. Journal of Plant Research , 2010, 123( 4): 497-507.
[12] Finér L, Ohashi M, Noguchi K, et al. Factors causing variation in fine root biomass in forest ecosystems[J]. Forest Ecology and Management,2011,261(2):265-277.
[13] Persson H ?. The distribution and productivity of fine roots in boreal forests[J]. Plant and Soil,1983,71(1-3):87- 101.
[14] 韩有志 . 林分空间异质性与水曲柳的更新格局和过程 [D]. 哈尔滨:东北林业大学,2001.
[15] Eissenstat D M, Yanai R D. Root life span, efficiency, and turnover[J]. Plant Roots : the Hidden Half,2002,3:221-238.
[16] Hendrick R L,Pregitzer K S. The dynamics of fine root length,biomass,and nitrogen content in two northern hardwood ecosystems [J]. Canadian Journal of Forest Research,1993,23(12):2507-2520.
[17] Brassard B W,Chen H Y H, Bergeron Y. Influence of environmental variability on root dynamics in northern forests [J]. Critical Reviews in Plant Science,2009,28 (3):179-197.
[18] Adams T S,Eissenstat D M. On the controls of root lifespan : assessing the role of soluble phenolics[J]. Plant & Soil,2015,392(1-2):301-308.
[19] Vogt K A,Grier C C, Vogt D J. Production,turnover, and nutrient dynamics of above-and belowground detritus of world forests [M]//Advances in Ecological Research. Academic Press,1986,15 :303-377.
[20] Fogel R. Root turnover and productivity of coniferous forests[J]. Plant & Soil,1983,71(1):75-85.
[21] Gower S T, Krankina O, Olson R J, et al. Net primary production and carbon allocation patterns of boreal forest ecosystems [J]. Ecological Applications,2001,11(5): 1395-1411.
[22] Burton A J, Pregitzer K S, Hendrick R L. Relationships between fine root dynamics and nitrogen availability in Michigan northern hardwood forests[J]. Oecologia,2000, 125(3):389-399.
[23] Kuhns M R,Garrett H E,Teskey R O, et al. Root growth of black walnut trees related to soil temperature,soil water potential,and leaf water potential[J]. Forest Science, 1985,31(3):617-629.
[24] Steele S J,Gower S T, Vogel J G, et al. Root mass, net primary production and turnover in aspen,jack pine and black spruce forests in Saskatchewan and Manitoba , Canada[J]. Tree physiology,1997,17(8-9):577-587.
[25] Hendrick R L, Pregitzer K S. The relationship between fine root demography and the soil environment in northern hardwood forests[J]. Ecoscience,1997,4(1):99-105.
[26] Tierney G L, Fahey T J, Groffman P M, et al. Environmental control of fine root dynamics in a northern hardwood forest[J]. Global Change Biology,2003,9(5): 670-679.