|Table of Contents|

Growth process of spruce saplings in cutovers adjacent to the timberline in eastern Tibetan Plateau(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

2016 06
Research Field:
Publishing date:


Growth process of spruce saplings in cutovers adjacent to the timberline in eastern Tibetan Plateau
ZHOU Yanping1 2 FENG Defeng1 2 LIU Xin1 BAO Weikai1** & BAO Yu3
Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China 2University of Chinese Academy of Sciences, Beijing 100049, China 3Zamtang Forestry Bureau, Aba Tibetan and Qiang Autonomous Prefecture of Sichuan Province, Zamtang 624300, China
high-elevation cutover Picea asperata Mast. artificial restoration shrub islands growth process sapling tree trunk analysis
S718.5 : 753

Individual growth process of saplings in high-elevation region is specially unknown, largely due to a lack of reliable stem analysis methodology for saplings. This study tried to find out a reliable and efficient method of sapling trunk analysis, to explore individual growth process of spruce sapling (tree height < 4 m; age < 25 a) cultivated on cutovers near the alpine timberline, and further to assess the effects of thickets on the height and radial area of spruce saplings of earlywood and latewood. We investigated 26 Picea asperata Mast. saplings and five types of thickets (Salix, Rosa, Spiraea, Lonicera, and Ribes) within < 1 m distance around them on coniferous forest cutovers (alt. 3 500-3 700 m) near alpine timberlines in Zamtang County, Sichuan Province. The height, basal diameter, and crown radius of each of saplings and thickets were measured one by one; the biomass of all spruce saplings was measured for needles, branch, stem and roots. Three saplings were used to develop the optimum trunk analysis method for the spruce saplings, with which we investigated the effect of shrub island types on both height and radial growth processes. The investigation showed the spruce saplings between 15 to 22 year-old were in average 2.23 m high and 6.23 cm in basal radius in the high-elevation forest cutovers nearby timberline in Tibetan Plateau, and their growth process could be divided into three stages: slow growth period below 10 years old, fluctuant growth period between 10 and 15 years old, and accelerated growth period over 15 years old. The treatments indicated that the best section length during trunk analysis for P. asperata saplings was the combination of 10 cm section below 50 cm height and 20 or 30 cm section in the rest upper portion. The thicket coexisting with spruce seedlings on the high-elevation cutovers significantly affected sapling growth. Furthermore the radial growth was affected by the nearby shrub islands more than the height growth; and the earlywood growth area was affected by the shrubs more than the latewood. It was also noted that different thickets presented various impacts on annual increments of height and basal radial area for the spruce sapling across the three growth stages, with Spiraea thickets exerting the weakest negative effect and salix thickets presenting strongest negative effects on the spruce saplings with over 10 years-old. This research confirmed that the best section length during trunk analysis for P. asperata saplings were the combination of 10 cm section below 50 cm high and 20 or 30 cm section in the rest upper portion for saplings with very slow growth in high-elevation region. According to our results, cutting thickets coexisting with spruce saplings when they are 8–10 years old (cultivated for five years) is an effective tending measurement for promoting sapling growth on the high-elevation cutovers adjacent to alpine timberline in the Tibetan Plateau.


1 梁罕超, 鄢武先, 吕成禄, 肖川林. 川西高山林区云杉人工幼林生长动态的初步研究[M]//王金锡. 四川森林生态研究. 成都: 四川科学技术出版社, 1990 [Liang HC, Yan WX, Lü CL, Xiao CL. Preliminary study on dynamic growth of Picea plantation sapling on western Sichuan alpine forest [M]//Wang JX. Sichuan Forest Ecological Research. Chengdu: Sichuan Science and Technology Publishing House, 1990] 2 幸福, 包维楷, 庞学勇, 闫晓丽, 刘鑫. 云杉人工纯林中树木个体径向生长过程及林窗疏伐后的释放效应[J]. 应用与环境生物学报, 2013, 19 (2): 262-271 [Xing F, Bao WK, Pang XY, Yan XL, Liu X. Radial growth process of Picea asperata and its response to gap model thinning within the single spruce plantation at the western Sichuan, China [J]. Chin J Appl Environ Biol, 2013, 19 (2): 262-271] 3 潘开文, 刘照光. 采伐迹地青杄和云杉两种人工群落生长规律的初步研究[J]. 应用与环境生物学报, 1999, 5 (1): 1-7 [Pan KW, Liu ZG. Preliminary study on the growth law of Picea asperata and P. wilsonii artificial community on clear-cut area [J]. Chin J Appl Environ Biol, 1999, 5 (1): 1-7] 4 白文斌. 西藏昌都地区云杉分布及林木生长规律研究[D]. 杨凌: 西北农林科技大学, 2012 [Bai WB. Distribution characteristic and individual forest tree growth analysis of Picea Likiangensisi in Changdu of Tibet [D]. Yangling: North West Agriculture and Forestry University, 2012] 5 赵浩彦.长白山云冷杉林幼树结构和生长动态分析[D]. 北京: 北京林业大学, 2012 [Zhao HY. The analysis of structure and growth dynamic of saplings in spruce-fir forest in Changbai Mountain [D]. Beijing: Beijing Forestry University, 2012] 6 杨传平, 杨书文, 刘传照, 刘伟力, 张维, 秦泗华, 刘桂丰, 夏德安. 红皮云杉生长变异与早期选择的研究[J]. 东北林业大学学报, 1990, 18 (S2): 94-100 [Yang CP, Yang SW, Liu CZ, Liu WL, Zhang W, Qin SH, Liu GF, Xia DA. Growth variation of Picea koraiensis and early selection [J]. J Northeast For Univ, 1990, 18 (S2): 94-100] 7 唐巍, 徐润青. 油麦吊云杉人工林生长量分析[J]. 四川林勘设计, 1997, 19 (2): 21-26 [Tang W, Xu RQ. Picea brachytyla var. complanata plantation growth analysis [J]. Sichuan For Expl Des, 1997, 19 (2): 21-26] 8 王学福, 郭生祥. 祁连山青海云杉个体生长过程分析[J]. 林业实用技术, 2014, 57 (7): 10-13 [Wang XF, Guo SX. Qilian mountain Picea crassifolia individual growth process analysis [J]. Pract For Technol, 2014, 57 (7): 10-13] 9 丁良忱, 别克. 天山云杉人工幼林生长规律的初步研究[J]. 八一农学院学报, 1988 (2): 38-45 [Ding LC, Bie K. A study on growth of man-made young trees of spruce in Tianshan [J]. J Aug 1st Agric Coll, 1988 (2): 38-45 10 Wang YC, Bao WK, Wu N. Shrub island effects on a high-altitude forest cutover in the eastern Tibetan Plateau [J]. Ann For Sci, 2011, 68: 1127-1141 11 杨琰瑛. 青藏高原东缘川西云杉林皆伐后灌木生长、繁殖与更新的研究[D]. 成都: 中国科学院成都生物研究所, 2007 [Yang YY. The growth, reproduction and regeneration of shrubs after Picea balfouriana forest clear cutting in the eastern margin of Qinghai-Tibetan Plateau [D]. Chengdu: Chengdu Institute of Biology, Chinese Academy of Science, 2007] 12 Wang YC, Bao WK, Wu N. Effects of Salix sphaeronymphe gorz shrubs on herbaceous community in forest secondary succession (Tibetan plateau) [J]. Pol J Ecol, 2011, 59 (3): 495-505 13 Alessandro F, Christopher JL. A Systmatic review and conceptual framework for the mechanistic pathways of nurse plants [J]. Glob Ecol Biogeogr, 2014, 23 (12): 1335-1345 14 Ren H, Yang L, Liu N. Nurse plant theory and its application in ecological restoration in lower subtropics of China [J]. Progr Nat Sci, 2008, 18 (2): 137-142 15 郑度, 姚檀栋. 青藏高原隆升与环境效应[M]. 北京: 科学出版社, 2004: 537-542 [Zheng D, Yao TD. Uplifting of Tibetan Plateau with Its Environmental Effects [M]. Beijing: Science Press, 2004: 537-542] 16 Miriti MN. Ontogenetic shift from facilitation to competition in a desert shrub [J]. J Ecol, 2006, 94 (5): 973-979 17 Soliveres S, DeSoto L, Maestre FT, Olano JM. Spatio-temporal heterogeneity in abiotic factors modulate multiple ontogenetic shifts between competition and facilitation [J]. Persp Plant Ecol Evol Syst, 2010, 12 (3): 227-234 18 杨龙, 刘楠, 王俊. 植物护理效应研究综述[J]. 热带地理, 2012, 32 (3): 321-330 [Yang L, Liu N, Wang J. Review of the research on nurse plant effect [J]. Trop Geogr, 2012, 32 (3): 321-330] 19 闫晓丽, 包维楷. 高海拔幼林地表苔藓组成与结构——皆伐与造林实践的影响评估[J]. 植物生态学报, 2008, 32 (4): 815-824 [Yan XL, Bao WK. Structure and species composition of ground bryophyte community of high-altitude young silvicultural cutovers in Rangtang county, China: evaluation on effects of clear-cutting and silvicultural management [J]. J Plant Ecol, 2008, 32 (4): 815-824] 20 刘鑫. 高山近林线森林地表植物多样性及其对块状皆伐的短期反应[D]. 成都: 中国科学院成都生物研究所, 2011 [Liu X. Plant biodiversity under the primary spruce forest and their immediate responses to clear-cutting activity at alpine timberline [D]. Chengdu: Chengdu Institute of Biology, Chinese Academy of Science, 2011] 21 何海. 使用WinDENDRO测量树轮宽度及交叉定年方法[J]. 重庆师范大学学报(自然科学版), 2005, 22 (4): 39-44 [He H. Measurement of tree-ring width WinDENDRO and crossdating methods [J]. J Chongqing Norm Univ (Nat Sci Ed), 2005, 22 (4): 39-44] 22 Stokes MA, Smiley TL. An Introduction to Tree-ring Dating [M]. Chicago: The University of Chicago Press, 1968 23 Biondi F. Comparing tree-ring chronologies and repeated timber inventories as forest monitoring tools [J]. Ecol Appl, 1999, 9 (1): 216-227 24 Wardman CW, Schmidt MG. Growth and form of Douglas-fir adjacent to persistent vine maple gaps in southwestern British Columbia [J]. For Ecol Manage, 1998, 106 (2): 223-233 25 Zhao QX, Pang XY, Bao WK, He QH. Effects of gap-model thinning intensity on the radial growth of gap-edge trees with distinct crown classes in a spruce plantation [J]. Trees-struct Funct, 2015, 29 (6): 1861-1870 26 Domínguez MT, Pérez-Ramos IM, Murillo JM, Mara?ón T. Facilitating the afforestation of Mediterranean polluted soils by nurse shrubs [J]. J Environ Manage, 2015, 161: 276-286


Last Update: 2016-12-30