N添加对墨西哥柏人工林土壤碳氮磷含量及其生态化学变化特征的影响
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摘要
对墨西哥柏人工林开展野外施N试验,探讨不同施N量对林地土壤碳氮磷含量及其生态化学计量特征变化的影响。结果表明:(1)在墨西哥柏生长初期(5月)和速生期阶段(7月、9月),土壤SOC在N3样地达到最大值,分别是2.39%、2.24%和2.30%;TN含量在N3样地达到最大值,分别是0.19%、0.18%和0.17%。(2)不同施N处理下林地土壤C/N呈先降低后增加的趋势,在11.66～14.35范围内波动。N添加对林地土壤N/P、C/P值的影响差异性较大。在N4、N5样地,土壤C/N、N/P、C/P值均显著高于N0样地。(3)同一施N样地内,不同生长阶段林地土壤SOC、TN、C/N和N/P含量变化不显著,但在N2、N3和N4样地,土壤TP含量、C/P值出现显著差异。(4)根据多因素方差分析结果,施N对土壤SOC、TP、TN、N/P和C/P均有显著影响。
In order to provide a theoretical basis for the cultivation and sustainable management of Cupressus lusitanica Mill. plantation, the effects of different N supply treatments on soil organic carbon, soil total nitrogen, soil total phosphorus, and soil ecological stoichiometry were explored. The results showed that:(1) Soil organic carbon and total nitrogen concentrations peaked under the N3 treatment at both early growth stage(May) and fast-growing period(July and September). The highest values of SOC were 2.39%, 2.24%, 2.30%, respectively, and the highest values of TN were 0.19%, 0.18%, and 0.17%, respectively.(2) The C/N of forest soil under different N supply treatments decreased firstly and then increased, and fluctuated in the range of 11.66-14.35. There were significantly difference on N addition to soil N/P and C/P. The mean values of soil C/N, N/P, C/P at the rates of N4 and N5 treatments were significantly higher than those at the rate of N0 treatment.(3) There was no significant influence of different growth stages on SOC, soil TN, soil C/N and soil N/P at the same N application rate. However, the mean values of soil TP and C/P were significant different at the rates of N2, N3 and N4 treatments.(4) Multivariate analysis of variance showed that there was a remarkable effect on soil SOC, TP, TN, N/P, C/P responses to N application.
In order to provide a theoretical basis for the cultivation and sustainable management of Cupressus lusitanica Mill. plantation, the effects of different N supply treatments on soil organic carbon, soil total nitrogen, soil total phosphorus, and soil ecological stoichiometry were explored. The results showed that:(1) Soil organic carbon and total nitrogen concentrations peaked under the N3 treatment at both early growth stage(May) and fast-growing period(July and September). The highest values of SOC were 2.39%, 2.24%, 2.30%, respectively, and the highest values of TN were 0.19%, 0.18%, and 0.17%, respectively.(2) The C/N of forest soil under different N supply treatments decreased firstly and then increased, and fluctuated in the range of 11.66-14.35. There were significantly difference on N addition to soil N/P and C/P. The mean values of soil C/N, N/P, C/P at the rates of N4 and N5 treatments were significantly higher than those at the rate of N0 treatment.(3) There was no significant influence of different growth stages on SOC, soil TN, soil C/N and soil N/P at the same N application rate. However, the mean values of soil TP and C/P were significant different at the rates of N2, N3 and N4 treatments.(4) Multivariate analysis of variance showed that there was a remarkable effect on soil SOC, TP, TN, N/P, C/P responses to N application.
引文
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[16]王长庭,王根绪,刘伟,等.施肥梯度对高寒草甸群落结构、功能和土壤质量的影响[J].生态学报,2013,(10):3103-3113.
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[22]吕金林,闫美杰,宋变兰,等.黄土丘陵区刺槐、辽东栎林地土壤碳、氮、磷生态化学计量特征[J].生态学报,2017,37(10):3385-3393.
[23]TIAN H Q,CHEN G S,ZHANG C,et al.Pattern and variation of C∶N∶P ratios in China’s soils:a synthesis of observational data[J].Biogeochemistry,2010,98(1/2/3):139-151.
[24]ELSER J J,ANDERSEN T,BARON J S,et al.Shifts in lake N∶P stoichiometry and nutrient limitation driven by atmospheric nitrogen deposition[J].Science,2009,326(5954):835-837.
[25]杨阔,黄建辉,董丹,等.青藏高原草地植物群落冠层叶片氮磷化学计量学分析[J].植物生态学报,2010,34(1):17-22.
[26]黄菊莹,赖荣生,余海龙,等.N添加对宁夏荒漠草原植物和土壤C∶N∶P生态化学计量特征的影响[J].生态学杂志,2013,32(11):2850-2856.
[27]ELSER J J,FAGAN W F,DENNO R F,et al.Nutritional constraints in terrestrial and freshwater food webs[J].Nature,2000,408(6812):578-580.
[28]李栎,王光军,周国新,等.会同桢楠人工幼林土壤C∶N∶P生态化学计量的时空特征[J].中南林业科技大学学报,2016,36(2):96-100.
[2]SOMERVILLE A J.Growth and utilisation of young Cupressus macrocarpa[J].NZ J Forestry Sci,1993,23(2)163-178.
[3]HASSANZADEH S L,TUTEN J A,VOGLER B,et al.The chemical composition and antimicrobial activity of the leaf oil of Cupressus lusitanica from Monteverde,Costa Rica[J].Pharmacogn Res,2010,2(1):19-21.
[4]刘奕琳,万福绪,娄晓瑞.盐胁迫对10个墨西哥柏种源幼苗生理生化的影响[J].南京林业大学学报(自然科学版),2013,37(4):29-33.
[5]张英团,万福绪,娄晓瑞,等.盐胁迫对不同种源墨西哥柏幼苗SS·SP·POD的影响[J].安徽农业科学,2013,41(11):4881-4883.
[6]鲁克成,刘奎.抗旱保水剂在墨西哥柏工程造林上的试验研究[J].林业调查规划,2003,28(1):99-102.
[7]包珩,万福绪.引种墨西哥柏幼苗越冬情况及苗高生长节律初探[J].安徽农业科学,2013,41(14):6321-6324.
[8]陈文年,卿东红,张轩波.沱江流域人工针叶林演替系列的物种多样性[J].重庆文理学院学报(自然科学版),2011,30(3):30-33.
[9]奚旺,刘勇,马履一,等.底部渗灌条件下水肥对华北落叶松容器苗生长及基质pH值、电导率的影响[J].林业科学,2015,51(6):36-43.
[10]邱权,李吉跃,王军辉,等.水肥耦合效应对楸树苗期叶片净光合速率和SPAD值的影响[J].生态学报,2016,36(11):3459-3468.
[11]GOTORE T,MUREPA R,GAPARE W J.Effects of nitrogen,phosphorus and potassium on the early growth of Pinus patula and Eucalyptus grandis[J].J Trop For Sci2014,26(1):22-31.
[12]李红梅.模拟氮沉降对墨西哥柏幼苗的影响[D].南京:南京林业大学,2013.
[13]秦雨薇,万福绪.施肥对10个墨西哥柏种源幼苗生长的影响[J].林业科技开发,2012,26(5):115-119.
[14]李栎,王光军,周国新,等.会同桢楠人工幼林土壤C∶N∶P生态化学计量的时空特征[J].中南林业科技大学学报,2016,36(2):96-100.
[15]罗亚勇,张宇,张静辉,等.不同退化阶段高寒草甸土壤化学计量特征[J].生态学杂志,2012,31(2):254-260.
[16]王长庭,王根绪,刘伟,等.施肥梯度对高寒草甸群落结构、功能和土壤质量的影响[J].生态学报,2013,(10):3103-3113.
[17]张雅坤,彭赛,宋倩云,等.不同施肥模式对杨树人工林土壤微生物功能多样性的影响[J].南京林业大学学报(自然科学版),2016,40(5):1-8.
[18]WANG S J,TAN Y,FAN H,et al.Responses of soil microarthropods to inorganic and organic fertilizers in a poplar plantation in a coastal area of eastern China[J].Appl Soil Ecol,2015,89:69-75.
[19]ZHANG W J,WANG X J,XU M G,et al.Soil organic carbon dynamics under long-term fertilizations in arable land of northern China[J].Biogeosciences,2010,7(2):409-425.
[20]史静,张誉方,张乃明,等.长期施磷对山原红壤磷库组成及有效性的影响[J].土壤学报,2014,51(2):351-359.
[21]ELSER J J,STERNER R W,GOROKHOVA E,et al.Biological stoichiometry from genes to ecosystems[J].Ecology Letters,2008,3(6):540-550.
[22]吕金林,闫美杰,宋变兰,等.黄土丘陵区刺槐、辽东栎林地土壤碳、氮、磷生态化学计量特征[J].生态学报,2017,37(10):3385-3393.
[23]TIAN H Q,CHEN G S,ZHANG C,et al.Pattern and variation of C∶N∶P ratios in China’s soils:a synthesis of observational data[J].Biogeochemistry,2010,98(1/2/3):139-151.
[24]ELSER J J,ANDERSEN T,BARON J S,et al.Shifts in lake N∶P stoichiometry and nutrient limitation driven by atmospheric nitrogen deposition[J].Science,2009,326(5954):835-837.
[25]杨阔,黄建辉,董丹,等.青藏高原草地植物群落冠层叶片氮磷化学计量学分析[J].植物生态学报,2010,34(1):17-22.
[26]黄菊莹,赖荣生,余海龙,等.N添加对宁夏荒漠草原植物和土壤C∶N∶P生态化学计量特征的影响[J].生态学杂志,2013,32(11):2850-2856.
[27]ELSER J J,FAGAN W F,DENNO R F,et al.Nutritional constraints in terrestrial and freshwater food webs[J].Nature,2000,408(6812):578-580.
[28]李栎,王光军,周国新,等.会同桢楠人工幼林土壤C∶N∶P生态化学计量的时空特征[J].中南林业科技大学学报,2016,36(2):96-100.