腾格里沙漠人工固沙植被中油蒿的生长及生物量分配动态

doi:10.3773/j.issn.1005-264x.2009.06.013

摘要/Abstract

摘要：

植物的资源分配模式反映了对环境的生态适应对策。2007年整个生长季, 采用生物量法对腾格里沙漠东南缘固沙植被区半灌木油蒿(Artemisia ordosica)地上部分各器官的生长及资源分配格局动态进行了研究。结果表明: 不同时期各器官的生长速率不同, 光合产物在各器官中的分配也不是等量的, 而是按一定的顺序在不同时期有不同的分配中心; 2007年油蒿的营养生长、繁殖输出、生殖枝大小都显著大于年降水量不足其一半的年份, 而繁殖分配和头状花序大小没有差异; 营养器官生物量大的油蒿总的繁殖输出也大, 但生殖期内营养生长和生殖生长既不同时也不等速, 表明资源分配的权衡(Trade-off)是存在的; 固沙植被建立以后, 随着时间延长, 油蒿的当年总生物量、繁殖输出、繁殖器官生物量分配有减小的趋势, 但不显著。

关键词: 腾格里沙漠, 固沙灌木, 营养生长, 生殖生长, 资源配置模式, 权衡

Abstract:

Aims Resource allocation pattern is an important trait of plant ecological adaptive strategy. The composite sub-shrub Artemisia ordosica is widely distributed in the sandy land of northern China and is an important sand-stabilizing plant. However, its growth dynamics and resource allocation patterns are poorly known. Our objectives were to determine: 1) the growth dynamics of vegetative and reproductive organs and the biomass allocation pattern in different growth periods; 2) the relationship between reproductive and vegetative growth and 3) variations of biomass allocation pattern with age of sand-fixing vegetation.
Methods A field experiment was conducted on re-vegetated areas in Shapotou, located at southeastern fringe of Tengger Desert, from April to November 2007. Twenty-five A. ordosicawere sampled monthly in sand-fixing vegetation planted in 1956, 1964, 1981, 1987 and 1991 to measure the number, size and biomass of vegetative organs and reproductive organs such as leaves, vegetative shoots, flowering shoots, capitula and seeds.
Important findings In different growth periods, there were different growth rates and proportion of photosynthate allocation to organs. So the energy accumulation center and growth center vary with growth period. The vegetative growth, reproductive output and size of panicle in 2007 were significantly greater than those in the year when precipitation was less than half that in 2007, while no significant differences were found in reproductive allocation and size of capitula between these years. The individuals with greater vegetative biomass were also characterized by higher reproductive output, but the vegetative and reproductive growth were unsynchronized with different increment speed, which indicated that there was a trade-off between reproduction and vegetative growth. Annual biomass, reproductive output and reproductive allocation showed a trend of decrease with time extension of the sand-fixing project, but no statistically significant differences of the three indices were found among these five vegetation areas with different ages.

Key words: Tengger Desert, sand-fixing shrub, vegetative growth, reproductive growth, resource allocation pattern, trade-off

冯丽, 张景光, 张志山, 郭群, 李新荣. 腾格里沙漠人工固沙植被中油蒿的生长及生物量分配动态. 植物生态学报, 2009, 33(6): 1132-1139. DOI: 10.3773/j.issn.1005-264x.2009.06.013

FENG Li, ZHANG Jing-Guang, ZHANG Zhi-Shan, GUO Qun, LI Xin-Rong. GROWTH AND BIOMASS ALLOCATION DYNAMICS OF ARTEMISIA ORDOSICA IN SAND-FIXING VEGETATION OF THE TENGGER DESERT OF CHINA. Chinese Journal of Plant Ecology, 2009, 33(6): 1132-1139. DOI: 10.3773/j.issn.1005-264x.2009.06.013

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链接本文: https://www.plant-ecology.com/CN/10.3773/j.issn.1005-264x.2009.06.013

https://www.plant-ecology.com/CN/Y2009/V33/I6/1132

图/表 6

图1 2007年和多年(1956~2001)平均降水量分布 (平均值±标准误)

Fig. 1 Precipitation distribution in 2007 and of multi-year mean from 1956 to 2001 (mean±SE)

图2 2007年叶(A)、新枝(B、C和D)和生殖构件(E、F和G)的生长动态(平均值±标准误)

Fig. 2 Growth dynamics of leaf (A), shoot (B, C and D) and reproductive organs (E, F and G) in 2007 (mean ± SE)

图3 2007年油蒿生物量分配动态

Fig. 3 Dynamics of biomass allocation of Artemisia ordosica in 2007

表1 2007年油蒿种子成熟期的生物量配置格局(平均值±标准误)

Table 1 Biomass allocation of Artemisia ordosica at seed maturity in 2007 (mean ± SE)

器官 Organs		数量 Number (ind.)	生物量 Biomass (g)	占当年生物量比例 Proportion in current year biomass (%)
营养器官 Vegetative organs	叶 Leaves	–	10.90±2.31	31.07±1.95	73.16±4.76
营养器官 Vegetative organs	营养枝 Vegetative shoots	52±9	14.78±2.44	42.09±3.73	73.16±4.76
生殖器官 Reproductive organs	圆锥花序轴 Panicle stems	14±3	3.28±0.74	9.34±1.75	26.84±4.76
	种子 Seeds	4 035±1 179	0.77±0.24	2.22±0.45
	其他 Others	–	5.37±1.75	15.27±2.76

图4 2007年油蒿生殖生长与营养生长的关系(平均值±标准误) A: 生殖生物量与营养器官生物量的相关性 Correlation between reproductive and vegetative biomass B: 生殖生物量与营养器官生物量的增长速率 Growth rate of reproductive and vegetative biomass

Fig. 4 Relationships between reproductive and vegetative growth of Artemisia ordosica in 2007 (mean ± SE)

图5 不同建植年代固沙区油蒿的生物量分配及头状花序和种子大小(平均值±标准误) (p>0.05)

Fig. 5 Biomass allocations, capitula and seeds size of Artemisia ordosica in sand-fixing vegetations established in different years (mean ± SE) (p>0.05)

参考文献 27

[1]	Bazzaz FA, Chiariello NR, Coley PD, Pitelka LF (1987). Allocating resources to reproduction and defense. BioScience, 37,58-67.
[2]	Cao GX (操国兴), Zhong ZC (钟章成), Xie DT (谢德体), Liu Y (刘芸) (2005). The relationship between reproductive allocation, fruit set and individual size of Camellia rosthorniana in different communities. Acta Phytoecologica Sinica (植物生态学报), 29,361-366. (in Chinese with English abstract)
[3]	Chen YW (陈应武), Zhang ZS (张志山), Zheng JG (郑敬刚), Li XR (李新荣), Zhang JG (张景光) (2006). Dynamics of aboveground parts of artificial vegetations in desert region. Acta Botanica Boreali-Occidentalia Sinica (西北植物学报), 26,1819-1826. (in Chinese with English abstract)
[4]	Cheplick GP (1995). Life history trade-offs in Amphibromus scabrivalvis (Poaceae): allocation to clonal growth, storage, and cleistogamous reproduction. American Journal of Botany, 82,621-629.
[5]	Cornelissen TG, Fernandes GW (2001). Defence, growth and nutrient allocation in the tropical shrub Bauhinia brevipes (Leguminosae). Austral Ecology, 26,246-253.
[6]	Fabbro T, Korner C (2004). Altitudinal differences in flower traits and reproductive allocation. Flora, 199,70-81.
[7]	Feng L (冯丽), Zhang JG (张景光), Zhang ZS (张志山), Zheng JG (郑敬刚), Song WM (宋维民) (2008). Reproductive allocation of Artemisia ordosica in replanted area for sand fixation in Shapotou Region. Journal of Desert Research(中国沙漠), 28,473-477. (in Chinese with English abstract)
[8]	Hemborg AM, Karlsson PS (1998). Altitudinal variation in size effects on plant reproductive effort and somatic costs of reproduction. EcoScience, 5,517-525.
[9]	Horvitz CC, Schemske DW (2002). Effects of plant size, leaf herbivory, local competition and fruit production on survival, growth and future reproduction of a Neotropical herb. Journal of Ecology, 90,279-290.
[10]	Jia XH (贾晓红), Li XR (李新荣), Li YS (李元寿) (2007). Soil organic carbon and nitrogen dynamics during the re-vegetation process in the arid desert region. Journal of Plant Ecology (Chinese Version) (植物生态学报), 31,66-74. (in Chinese with English abstract)
[11]	Li FR, Zhang AS, Duan SS, Kang LF (2005). Patterns of reproductive allocation in Artemisia halodendron inhabiting two contrasting habitats. Acta Oecologica, 28,57-64.
[12]	Li XB (李晓兵), Yang J (杨劼), Tian QS (田青松) (1996). Allocation dynamics of photosynthetic product in Artemisia ordosica. Grassland of China (中国草地), 2,47-51. (in Chinese with English abstract)
[13]	Li XR (2005). Influence of variation of soil spatial heterogeneity on vegetation restoration. Science in China Series D, 48,2020-2031.
[14]	Li XR, Ma FY, Xiao HL, Wang XP, Kim KC (2004a). Long-term effects of revegetation on soil water content of sand dunes in arid region of northern China. Journal of Arid Environments, 57,1-16.
[15]	Li XR (李新荣), Shi QH (石庆辉), Zhang JG (张景光) (1998). Study of plant diversity changes during the artificial vegetation evolution processes in the Shapotou region. Journal of Desert Research (中国沙漠), 18(Suppl. 4),23-29. (in Chinese with English abstract)
[16]	Li XR, Zhang ZS, Zhang JG, Wang XP, Jia XH (2004b). Association between vegetation patterns and soil properties in the Southeastern Tengger Desert, China. Arid Land Research and Management, 18,369-383.
[17]	Liu ZJ (刘左军), Du GZ (杜国祯), Chen JK (陈家宽) (2002). Size-dependent reproductive allocation of Ligularia virgaura in different habitats. Acta Phytoecologica Sinica (植物生态学报), 26,44-50. (in Chinese with English abstract)
[18]	Obeso JR (2002). The costs of reproduction in plants. New Phytologist, 155,321-348.
[19]	Stearns SC (1989). Trade-offs in life-history evolution. Functional Ecology, 3,259-268.
[20]	Sun RY (孙儒泳) (1997). Life history strategy. Bulletin of Biology(生物学通报), 32(5),2-4. (in Chinese)
[21]	Weiner J (1988). The influence of competition on plant reproduction. In: Doust JL, Doust LL eds. Plant Reproductive Ecology: Patterns and Strategies. Oxford University Press, Oxford, 228-245.
[22]	Worley AC, Harder LD (1996). Size-dependent resource allocation and costs of reproduction in Pinguicula vulgaris (Lentibulariaceae). Journal of Ecology, 84,195-206.
[23]	Xu Q (徐庆), Li SR (刘世荣), Zang RG (臧润国), Guo QS (郭泉水), Hao YG (郝玉光) (2001). The characteristics of reproductive ecology of endemic species Tetraena mongolica population in China—Reproductive value and reproductive allocation. Scientia Silvae Sinicae(林业科学), 37(2),36-41. (in Chinese with English abstract)
[24]	Yang HX (杨洪晓), Zhang JT (张金屯), Wu B (吴波), Wang Y (王妍), Li XS (李晓松), Xu B (许彬) (2004). Adaptation of Artemisia ordosica to temperate arid sandy land and its roles in habitat shift. Journal of Beijing Normal University (Natural Science)(北京师范大学学报(自然科学版)), 40,684-690. (in Chinese with English abstract)
[25]	Yao H (姚红), Tan DY (谭敦炎) (2005). Size-dependent reproductive output and life-history strategies in four ephemeral species of Trigonella. Acta Phytoecologica Sinica (植物生态学报), 29,954-960. (in Chinese with English abstract)
[26]	Zhang DY (张大勇) (2004). Plant Life History Evolution and Reproductive Ecology(植物生活史进化与繁殖生态学). Science Press, Beijing, 12-18. (in Chinese)
[27]	Zhao ZG (赵志刚), Du GZ (杜国祯), Ren QJ (任青吉) (2004). Size-dependent reproduction and sex allocation in five species of Ranunculaceae. Acta Phytoecologica Sinica (植物生态学报), 28,9-16. (in Chinese with English abstract)