| 生物土壤与生态 |
|
|
|
|
| Status of Foliar Nutrients in Populus euphratica Desert Riparian Forest in Northwestern China |
| CAO Sheng-kui1, FENG Qi2, SI Jian-hua2, ZHANG Xiu-feng3, LIU Wei2, CHANG Zong-qiang2 |
| 1.School of Life and Geographical Sciences, Qinghai Normal University, Xining 810008, China; 2.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 3.Desert Control Station of Yabulai of Alashan Right Banner, Bayanhot 737300, Inner Mongolia, China |
|
|
|
|
Abstract Contents of chemical constituents, namely organic carbon(C), total nitrogen (N), total phosphorus (P), total potassium (K), of Populus euphratica desert riparian forest in Ejina oasis of northwestern China were compared among different months in growing season and different micro-habitats, and the correlations among the chemical constituents were studied. Results showed that the ranges of C, N, P, and K contents in the leaves of P.euphratica were 39.08%~46.16%, 0.28%~2.81%, 0.05%~0.18%, and 0.35%~2.03%, and the mean values were 43.51%, 1.49%, 0.102% and 1.17%, respectively. The ratios of C/N, C/P and N/P varied from 16.26 to 146.61, from 258.08 to 908.67, and from 2.89 to 26.67, respectively, and the mean values were 37.24, 466.27 and 15.14, respectively. The mean N content in the leaves of P.euphratica was significantly lower than N content in deciduous tree in China, but their mean P contents were similar. The ratio of C/N in the leaves of P.euphratica was remarkably higher than that of terrestrial plants. The ratio of N/P indicated that growth of P. euphratica was jointly limited by N and P nutrimental deficiency. The total content of leaf C, N, P, and K descended during growth season, and the maximum value appeared in May, the minimum appeared in September. The contents of C, N and K, and the ratio of N/P gradually increased from riparian lowland, flatland, sandpile, Gobi to dune, but the spatial pattern of C/N was opposite, and there was not significant spatial variation for P content. There were extremely significantly positive correlations between C content and N, K contents, respectively, and weakly positive correlation between C content and P content. The relationships of N and P with K were both significantly positive.
|
|
Received: 04 October 2010
Published: 20 September 2011
|
|
|
[1]Lal R.Soil carbon sequestration impacts on global climate change and food security[J].Science,2004:304.
[2]Stevenson F J,Cole M A.Cycles of soil carbon,nitrogen,phosphorus,sulfur,micronutrients[M].John Wiley & Sons Inc,USA,1999.
[3]Schipper L A,Percival H J,Sparling G P.An approach for estimating when soils will reach maximum nitrogen storage[J].Soil Use and Management,2004,20:281-286.
[4]韩兴国,李凌浩,黄建辉.生物地球化学概论[M].北京:高等教育出版社,1999.
[5]Hessen D O,gren G I,Anderson T R,et al.Carbon sequestration in ecosystems:the role of stoichiometry[J].Ecology,2004,85(5):1179-1192.
[6]Lambers H,Chapin F S,Pons T L.Plant Physiological Ecology[M].Springer-Verlag,New York,1998.
[7]Sterner R W,Elser J J.Ecological Stoichiometry:The Biology of Elements from Molecules to the Biosphere[M].Princeton University Press,Princeton,2002
[8]Agren G I.The C∶N∶P stoichiometry of autotrophs-theory and observations[J].Ecology Letters,2004,7(3):185-191.
[9]Vitousek P M.Nutrient cycling and nutrient use efficiency[J].American Naturalist,1982,119 (4):553-572.
[10]Aerts R,Chapin F S Ⅲ.The mineral nutrition of wild plants revisited:A reevaluation of processes and patterns[J].Advances in Ecological Research,2000,30:1-67.
[11]Koerselman W,Meuleman A F M.The vegetation N∶P ratio:A new tool to detect the nature of nutrient limitation[J].Journal of Applied Ecology,1996,33(6):1441-1450.
[12]Elser J J,Fagan W F,Denno R F,et al.Nutritional constraints in terrestrial and freshwater food webs[J].Nature,2000,408:578-580.
[13]Güsewell S.N∶P ratios in terrestrial plants:Variation and functional significance[J].New Phytologist,2004,164(2):243-266.
[14]Wright I J,Reich P B,Westoby M,et al.The worldwide leaf economics spectrum[J].Nature,2004,428:821-827.
[15]Agren G I.The C N P stoichiometry of autotrophs-theory and observations[J].Ecology Letters,2004,7(3):185-191.
[16]Han W X,Fang J Y,Guo D L,et al.Leaf nitrogen and phosphorus stoichiometry across 753 terrestrial plant species in China[J].New Phytologist,2005,168(2):377-385.
[17]He J S,Fang J Y,Wang Z H,et al.Stoichiometry and large-scale patterns of leaf carbon and nitrogen in the grasslands of China[J].Oecologia,2006,149(1):115-122.
[18]He J S,Wang L,Flynn D F B,et al.Leaf nitrogen:Phosphorus stoichiometry across Chinese grassland biomes[J].Oecologia,2008,155(2):301-310.
[19]高三平,李俊祥,徐明策,等.天童常绿阔叶林不同演替阶段常见种叶片N,P化学计量学特征[J].生态学报,2007,27(3):947-952.
[20]Zheng S X,Shangguan Z P.Spatial patterns of leaf nutrient traits of the plants in the Loess Plateau of China[J].Trees,2007,191(2):279-293.
[21]冯起,司建华,李建林,等.胡杨根系分布特征与根系吸水模型建立[J].地球科学进展,2008,23(7):765-772.
[22]王世绩,陈炳浩,李护群.胡杨林[M].北京:中国环境科学出版社,1995:141-144.
[23]司建华,冯起,张小由.极端干旱区胡杨水势及影响因子研究[J].中国沙漠,2005,25(4):505-510.
[24]司建华,冯起,张小由,等.极端干旱区荒漠河岸林胡杨生长季树干液流变化[J].中国沙漠,2007,27(3):442-447.
[25]陈炳浩.保护好荒漠地带珍贵的胡杨森林资源[J].中国沙漠,1983,3(4):27-28.
[26]张小由,龚家栋,周茂先,等.胡杨树干液流的时空变异性研究[J].中国沙漠,2004,24(4):489-492.
[27]黄培佑.胡杨林的衰退及林地更新复壮的探讨——塔里木盆地荒漠化的一个对策[J].新疆大学学报(自然科学版),1984(2):78-84.
[28]孙雪新,康向阳.胡杨天然群体过氧化物酶同工酶遗传变异初探[J].中国沙漠,1991,11(1):30-35.
[29]鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,1999.
[30]任书杰,于贵瑞,陶波,等.中国东部南北样带654种植物叶片氮和磷的化学计量学特征研究[J].环境科学,2007,28(12):2665-2673.
[31]郑淑霞,上官周平.黄土高原地区植物叶片养分组成的空间分布格局[J].自然科学进展,2006,16(8):965-973.
[32]任书杰,于贵瑞,陶波,等.兴安落叶松(Larix gmelinii Rupr.)叶片养分的空间分布格局[J].生态学报,2009,29(4):1899-1906.
[33]Wright I J,Reich P B,Cornelissen J H C,et al.Assessing the generality of global leaf trait relationships[J].New Phytologist,2005,166:485-496.
[34]Patterson T B,Guy R D,Dang Q L.Whole-plant nitrogen-and water-relations traits,and their associated trade-offs,in adjacent muskeg and upland boreal spruce species[J].Oecologia,1997,110,160-168.
[35]Livingston N J,Guy R D,Ethier G J.The effects of nitrogen stress on the stable carbon isotope composition,productivity and water use efficiency of white spruce (Picea glauca (Moench) Voss) seedlings[J].Plant Cell Environment,1999,22:281-289.
[36]G sewell S.N∶P ratios in terrestrial plants:Variation and functional significance[J].New Phytologist,2004,164:243-266.
[37]Drenovsky R E,Richards J H.Critical N∶P values:predicting nutrient deficiencies in desert shrub lands[J].Plant and Soil,2004,259:59-69.
[38]Herbert D A,Williams M,Rastetter E B.A model analysis of N and P limitation on carbon accumulation in Amazonian secondary forest after alternate land-use abandonmentv[J].Biogeochemistry,2003,65:121-150.
[39]Wardle D A,Walker L R,Bardgett R D.Ecosystem Properties and Forest Decline in Contrasting Long-Term Chronosequences[J].Science,2004,305:509-513.
[40]陈佐忠,黄德华.自然条件下大针茅草原几种主要植物氮、磷、钾、铁含量的季节动态[J].植物生态学与地植物学学报,1989,13(4):325-331.
[41]Aerts R.Nutrient use efficiency in evergreen and deciduous species from heathlands[J].Oecologia,1990,84:391-397.
[42]Berendse F,Aerts R.Nitrogen use efficiency:a biologically meaningful definition[J].Functional Ecology,1987,1:293-296.
[43]Van Heerwaarden L M,Toet S,Aerts R.Nitrogen and phosphorus resorption efficiency and proficiency in six subarctic bog species after 4 years of nitrogen fertilization[J].Journal of Ecology,2003,91:1060-1070.
[44]Field C.The photosynthesis-nitrogen relationship in wild plants[M]//Givnish T J.On the Economy of Plant Form and Function.Cambridge University Press,1986:25-55.
[45]Evans R J.Nitrogen and photosynthesis in the flag leaf of wheat (Triticum aestivum L.)[J].Plant Physiology,1983,72(2):297-302.
[46]Elumalai S,Bahieldinal A,Wraith J M,et al.Imp roved biomass productivity and water use efficiency underwater deficit conditions in transgenic wheat constitutively expressing the barley HVA1 gene[J].Plant Science,2000,155:1-9.
[47]潘瑞炽.植物生理学 [M].北京:高等教育出版社,第4版,2001. |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
2011, Vol. 31 
