Effects of Fargesia denudata density on soil nutrient pool

Abstract

Abstract: This paper studied the nutrient storage and its dynamics in different soil layers under three densities of Fargesia denudata communities in Wanglang National Nature Reserve,aimed to understand the effects of F.denudata density on the storage and dynamics of soil nutrients.The results showed that F.denudata density had a significant effect on the total and available nutrient contents in 0～30 cm soil layer.The total and available P contents decreased significantly with the increasing F.denudata density (P<0.01),being 0.274 kg·m^-2 and 1.72 g·m^-2 at D₁,0.222 kg·m^-2 and 1.50 g·m^-2 at D₂,and 0.158 kg·m^-2 and 1.10 g·m^-2 at D₃ sampling site,while the contents of total Ca and Mg increased with the increasing F.denudata density,being 2.64 and 1.70 kg·m^-2 at D₁,4.42 and 1.80 kg·m^-2 at D₂,and 4.85 and 2.12 kg·m^-2 at D₃ sampling site,respectively.The contents of both total and available N and K did not change significantly with F.denudata density.Soil total and available N were 1.10 and 45.15 kg·m^-2 at D₁,1.04 and 44.38 kg·m^-2 at D₂,and 1.06 and 42.02 kg·m^-2 at D₃,while soil total and available K were 3.19 and 39.62 kg·m^-2 at D₁,3.30 and 36.23 kg·m^-2 at D₂,and (3.19) and 37.18 kg·m^-2 at D₃,respectively.The total nutrient storage was in order of Ca>K>Mg>N>P,except a higher K storage than Ca under D₁ community.The available N,P and K concentration in surface soil (0～10 cm) decreased significantly in July,and then increased slowly in the later growth season.In general,the change magnitude of available nutrients was greater in surface soil (L₁) than in lower soil layers (L₂ and L₃),under higher F.denudata density (D₃) than under lower F.denudata density,and for P than for N and K.The distribution pattern of nutrient storage in soil layers differed greatly from that of nutrient concentration,regardless of F.denudata densities.The contents of total N,P,K,Ca and Mg in L₁ (0～10 cm) were lower than those in L₂ (10～20 cm) and L₃ (20～30 cm).The differences of nutrient contents among soil layers varied with F.denudata density,and particularly with bio-elements.The results suggested that the nutrient storage in soil under F.denudata community was related to F.denudata density,because the density affects the processes of nutrient cycling,such as nutrient absorption,return through litter,and activity of soil microorganisms.It could be concluded that the density of F.denudata communities affected the storage of soil P and Ca significantly,but that of soil Mg,N and K slightly.Soil total and available P contents decreased with the increasing F.denudata density,implying that soil P could be one of the main factors limiting the growth and succession of F.denudata community in these stands,and affecting the flowering and death of bamboo.

Key words: Fargesiadenudata, Soil nutrient pool, Available nutrient dynamics, Density

CLC Number:

S714

LU Yejiang, WANG Kaiyun, YANG Wanqin, WU Fuzhong. Effects of Fargesia denudata density on soil nutrient pool[J]. Chinese Journal of Applied Ecology, 2005, 16(6): 996-1001.

References

[1] Batjes NH, Dijkshoorn JA. 1999. Carbon and nitrogen stocks in the soils of the Amazon Region. Geoderma, 89:273～ 286
[2] Currie SW. 1999. The responsive C and N biogeochemistry of the temperate forest floor. Tree, 14: 316 ～ 320
[3] David A, Wedin A, Tilman D. 1990. Species effects on nitrogen cycling: A test with perennial grasses. Oecologia, 84:433～ 441
[4] Gao Y-X (高以信), Li M-S (李明森). 2000. Soil of Hengduan Mountains. Beijing: Science Press. 131 ～ 135 (in Chinese)
[5] Hong J-P(洪坚平), Xie Y-H(谢英荷), Markus K, et al. 1997.Studies on soil microbial biomass in grassland region of Southwestern Germany. Acta Ecol Sin (生态学报), 17 (5): 493 ～ 496 (in Chinese)
[6] Laclau JP, Ranger JD, Nzila JP, et al. 2003. Nutrient cycling in a clonal stand of Eucalyptus and an adjacent savanna ecosystem in Congo Ⅱ. Chemical composition of soil solutions. For Ecol Man,180: 527～ 544
[7] Laclau JP, Arnaud M, Bouillet JP, et al. 2001. Spatial distribution of Eucalyptus roots in a deep sandy soil in the Congo: Relationships with the ability of the stand to take up water and nutrients. Tree Physiol, 21:129～ 136
[8] Li C-B(李承彪). 1990. Sichuan Forest Ecology Research. Chengdu: Sichuan Science and Technology Press. 3～48(in Chinese)
[9] Li C-B(李承彪). 1997. A Study of Staple Food Bamboo for the Giant Panda. Guiyang: Guizhou Science and Technology Press. 149～158(in Chinese)
[10] Liao Z-Q(廖志琴). 1993. Effect of shade and sunlight on the development of Fargesia denudata. J Bamboo Res (竹子研究汇刊),12(4) :58～63(in Chinese)
[11] Lu R-K (鲁如坤). 1999. Analytical Methods of Soil and Agriculture. Beijing: China Agricultural Science and Technology Press. (in Chinese)
[12] Melillo JM, Aber JD, Muratore JF. 1982. Nitrogen and lignin control of hardwood leaf litter decomposition dynamics. Ecology, 63:621 ～626
[13] Moreno G, Gallardo JF, Schneider K, et al. 1996. Water and bioelement fluxes in four Quercus pyrenaica along a pluviometric gradient. Ann Sci For, 53:625～639
[14] Nu K-H(牟克华), Shi L-X(史立新). 1991. Studies on biological characteristics of Bashania fangiana - A bamboo species as giant pandas staple food. J Bamboo Res(竹子研究汇刊), 10(4) :24～32(in Chinese)
[15] Olson BA, Staaf H, Lundkvist H, et al. 1996. Carbon and nitrogen in coniferous forest soils after clear-felling and harvests of different intensity. For Ecol Man, 82:19 ～ 32
[16] Palma RM, Defrieri RL, Tortarolo MF, et al. 2000. Seasonal changes of bioelements in the litter and their potential return to green leaves in four species of the argentine subtropical forest. Ann Bot, 85:181 ～ 186
[17] PanK-W(潘开文),HeJ(何静),Wu N(吴宁).2004. Effect of forest litter on microenvironment conditions of forestland. Chin J Appl Ecol (应用生态学报), 15(1): 153 ～ 158(in Chinese)
[18] PangX-Y(庞学勇),Liu S-Q(刘世全),Liu Q(刘庆), et al.2004. Degradation and control of soil organic matter and nutrient pool under subalpine spruce plantation in western Sichuan. Acta Pedol Sin (土壤学报), 41 (1): 126 ～ 133 (in Chinese)
[19] Qin Z-S(秦自生), Zhang Y(张焱), Zhang H-D(张洪德), et al.1991. A mathematical model of the environment effect upon the flowering of Bashania fangiana. China J Biomath (生物数学学报), 6(1): 13～ 15(in Chinese)
[20] Qin Z-S(秦自生). 1985. Ecological environment and regeneration of staple food bamboo of the giant panda in Sichuan. J Bamboo Res (竹子研究汇刊), 4(1): 1 ～ 10(in Chinese)
[21] Ryan DF, Bormann FH. 1982. Nutrient resorption in Northern hardwood forests. Bioscience, 32: 29～ 32
[22] Stohlgren TJ. 1988. Litter dynamics in two Sierran mixed conifer forests Ⅰ. Litterfall and decomposition rates. Can J For Res, 18:1127～1135
[23] Taylor AH, Qin ZS. 1988. Regeneration from seed of Sinarundinaria fangiana, a bamboo, in the Wolong Giant Panda Reserve,Sichuan, China. Am J Bot, 75(7): 1065 ～ 1073
[24] Taylor AH, Qin Z-S(秦自生). 1997. Temperate bamboo forest dynamics and panda conservation in China. In: Chapman G, ed. The Bamboos. New York:Academic Press.
[25] Taylor AH, Reid DG, Qin ZS, et al. 1991. Spatial patterns and environmental associates of bamboo (Bashania faugiana Yi) after mass-flowering in southwestern China. Bull Torrey Bot Club, 118:247 ～ 254
[26] Vitaousek PM, Howarth RW. 1991. Nitrogen limitation on land and in the sea:How can it occur? Biogeochemistry, 13:87～ 115
[27] Wang J-X(王金锡), Ma Z-G(马自贵), Liu C-X(刘长祥), et al.1991. Preliminary study on the growth and development rules of Fargesia denudlata bamboo. J Bamboo Res (竹子研究汇刊), 10(3) :38～48(in Chinese)
[28] Wang K-Y(王开运). 2004. Processes of Subalpine Forest Ecosystems in the West of Sichuan. Chengdu:Sichuan Science and Technology Press. 1 ～27(in Chinese)
[29] Wang Q-B(王其兵), Li L-H(李凌浩), Bai Y-F(白永飞), et al.2000. Effects of simulated climate change on the decomposition of mixed litter in three steppe communities. Acta Phytoecol Sin (植物生态学报), 24(6) :674～679(in Chinese)
[30] Wang W(王娓),Guo J-X(郭继勋).2001. Seasonal dynamics of environmental factors and decomposition rate of litter in Puccinellia tenuiflora community of Songnen grassland of China. Chin J Appl Ecol (应用生态学报), 12(6): 841 ～ 844(in Chinese)
[31] Xia H-P(夏汉平), Yu Q-F(余清发), Zhang D-Q(张德强). 1997.The soil acidity and nutrient contents, and their characteristics of seasonal dynamic changes under 3 different forests of Dinghushan Nature Reserve. Acta Ecol Sin (生态学报), 17 (6): 645 ～ 653 (in Chinese)
[32] Xue J-Y(薛敬意), Tang J-W(唐建维), Sha L-Q(沙丽清), et al.2003. Soil nutrient contents and their characteristics of seasonal changes under Shorea chinensis forest in Xishuangbanna. Acta Phytoecol Sin (植物生态学报), 27(3): 373 ～ 379(in Chinese)
[33] XueL(薛立), Chen H-Y(陈红跃), Kuang L-G(邝立刚).2003. Soil nutrient, microorganism and enzyme activity in Pinus elliottii mixed stands. Chin J Appl Ecol (应用生态学报), 14 (1):157～ 159(in Chinese)
[34] Yi T-P (易同培). 1985. Classification and distribution of staple food bamboo for the Giant Panda Ⅰ.J Bamboo Res(竹子研究汇刊), 4(1): 1 ～ 10(in Chinese)
[35] Zhou S-Q(周世强). 1994. Study on effect of rejuvenation technique on population density and above-ground biomass of Bashania fangiana. J Bamboo Res (竹子研究汇刊), 13(2) :26～36(in Chinese)