REN Lihong,SUO Peiheng,TANG Chujun,et al.Seasonal Dynamics of Soil Nitrogen in the Continuously Cultivated Chinese Fir Plantations[J].Research of Soil and Water Conservation,2021,28(05):22-28.
不同连栽代数杉木人工林土壤氮素季节变化特征
- Title:
- Seasonal Dynamics of Soil Nitrogen in the Continuously Cultivated Chinese Fir Plantations
- 文章编号:
- 1005-3409(2021)05-0022-07
- 分类号:
- S714.7
- 文献标志码:
- A
- 摘要:
- 为了解连栽杉木人工林不同代际土壤氮的季节变化特征,以中亚热带不同连栽代数杉木人工林(一代、二代、三代)及格氏栲天然林为研究对象,测定不同形态氮(全氮、可溶性有机氮、铵态氮、硝态氮、微生物量氮)含量及其季节动态变化,探究连栽和季节变化对土壤氮素有效性的影响。结果表明:(1)杉木人工林土壤全氮和可溶性有机氮有明显的季节变化,其中全氮含量由大到小表现为6月、12月、3月、9月,可溶性有机氮含量由大到小表现为6月、9月、3月、12月。(2)杉木人工林土壤铵态氮含量随着栽植代数的增加而增加,而硝态氮则呈现出相反的趋势,且土壤硝态氮和铵态氮含量具有明显的季节变化特征,在3月时土壤铵态氮含量达到最大,而土壤硝态氮含量在6月达到最大。(3)不同连栽代数和采样季节及其交互作用均对土壤微生物量氮含量有显著影响。(4)杉木人工林土壤全氮、铵态氮和硝态氮之间均存在极显著的相关关系,土壤微生物量氮、可溶性有机氮和铵态氮之间也存在极显著相关关系(p<0.01); 且土壤含水量与土壤微生物量氮、可溶性有机氮和铵态氮含量呈显著相关关系,表明土壤水分是影响该地区土壤氮含量变化的关键因子。尽管连栽对于土壤全氮和可溶性有机氮无显著影响,但是随着连栽代数的增加,杉木人工林土壤NH+4-N总体呈现出增加的趋势,而NO-3-N则呈现出下降的趋势,这可能反映了土壤系统在氮匮乏条件下采取了一种保氮策略,其微生物学机理还有待进一步探究。
- Abstract:
- This study aims to investigate the seasonal dynamics of the contents of different fractions of soil nitrogen(total nitrogen,TN; dissolved organic nitrogen,DON; ammonium nitrogen,NH+4-N; nitrate nitrogen,NO-3-N; microbial biomass nitrogen,MBN)in different successive rotations(first-rotation plantation,FRP; second-rotation plantation,SRP; third-rotation plantation,TRP)of subtropical Chinese fir(Cunninghamia lanceolate)plantation and Castanopsis Kawakamii dominated natural forest(NF)from December 2017 to September 2018 in Sanming,Fujian,China. The results showed that:(1)the contents of soil TN and DON exhibited significant seasonal variations in Chinese fir plantation; TN content decreased in the order: June>December>March>September,DON content decreased in the order: June>September>March>December;(2)the contents of soil NH+4-N in soils increased with the increment of successive rotations of Chinese fir,while the contents of NO-3-N presented the opposite trend; the contents of soil NH+4-N and NO-3-N exhibited significant seasonal variations in Chinese fir plantations,and the soil NH+4-N content reached the maximum in March,while the soil NO-3-N content reached the maximum in June;(3)the soil MBN content was significantly affected by different generations of Chinese fir plantation,sampling seasons and their interactions;(4)there was significant correlation among soil TN,NH+4-N and NO-3-N contents in Chinese fir plantations,and there was also significant correlation among soil MBN,DON and NH+4-N(p< 0.01),and there was significant relationship among soil moisture,MBN,DON and NH+4-N,indicating that soil moisture was the key factor regulating the seasonal dynamics of soil N in Chinese fir plantations. Successive rotation had no significant impact on contents of soil TN and DON,but led to the reduction in the nitrate content and enhancement of ammonium content. These results indicate the N-conservation strategy of successive rotations in Chinese fir plantation,and the underlying microbial mechanism on the dynamics of soil nitrogen needs to be further studied.
参考文献/References:
[1] 耿丹,夏朝宗,张国斌,等.杉木人工林灌木层生物量模型构建[J].北京林业大学学报,2018,40(3):34-41.[2] 第八次全国森林资源清查结果[J].林业资源管理,2014(1):1-2.[3] 陈楚莹,张家武,周崇莲,等.改善杉木人工林的林地质量和提高生产力的研究[J].应用生态学报,1990,1(2):97-106.[4] 马祥庆,范少辉,刘爱琴,等.不同栽植代数杉木人工林土壤肥力的比较研究[J].林业科学研究,2013,13(6):577-582.[5] 盛炜彤,杨承栋,范少辉.杉木人工林的土壤性质变化[J].林业科学研究,2003,16(4):377-385.[6] 林开敏,俞新妥.杉木人工林地力衰退与可持续经营[J].中国生态农业学报,2001,9(4):43-46.[7] 盛炜彤,范少辉.杉木及其人工林自身特性对长期立地生产力的影响[J].林业科学研究,2002,15(6):629-636.[8] 杜国坚,张庆荣,洪利兴,等.杉木连栽林地土壤微生物区系及其生化特性和理化性质的研究[J].浙江林业科技,1995,15(5):14-20.[9] 杨玉盛,何宗明,陈光水,等.杉木多代连栽后土壤肥力变化[J].土壤与环境,2001,10(1):33-38.[10] Bruun S,Luxhoi J,Magid J,et al. A nitrogen mineralization model based on relationships for gross mineralization and immobilization [J]. Soil Biology and Biochemistry,2006,38(9):2712-2721.[11] 毛超,漆良华.森林土壤氮转化与循环研究进展[J].世界林业研究,2015,28(2):8-13.[12] 孙启武,杨承栋,焦如珍.江西大岗山连栽杉木人工林土壤性质的变化[J].林业科学,2003,39(3):1-5.[13] 何友军,王清奎,汪思龙,等.杉木人工林土壤微生物生物量碳氮特征及其与土壤养分的关系[J].应用生态学报,2006,17(12):2292-2296.[14] 周才平,欧阳华.温度和湿度对暖温带落叶阔叶林土壤氮矿化的影响[J].植物生态学报,2001,25(2):204-209.[15] 章宪,范跃新,罗茜,等.凋落物和根系处理对杉木人工林土壤氮素的影响[J].亚热带资源与环境学报,2014,9(2):39-44.[16] 吴汉卿,张玉龙,张玉玲,等.土壤有机氮组分研究进展[J].土壤通报,2018,49(5):1240-1246.[17] Näsholm T,Kielland K,Ganeteg U. Uptake of organic nitrogen by plants [J]. New Phytologist,2009,182(1):31-48.[18] 王百群,戴鸣钧.土壤不同形态氮素在剖面中移动特征的模拟研究[J].水土保持研究,2000,7(4):115-120.[19] 王清奎,汪思龙,冯宗炜.杉木人工林土壤可溶性有机质及其与土壤养分的关系[J].生态学报,2005,25(6):1299-1305.[20] Chen C R,Xu Z H,Zhang S L,et al. Soluble organic nitrogen pools in forest soils of subtropical Australia [J]. Plant and Soil,2005,177:285-297.[21] 索沛蘅,杜大俊,王玉哲,等.杉木连栽对土壤氮含量和氮转化酶活性的影响[J].森林与环境学报,2019,39(2):113-119.[22] 黄振格,何斌,谢敏洋,等.连栽桉树人工林土壤氮素季节动态特征[J].东北林业大学学报,2020,48(9):88-94.[23] 高艳.森林土壤可溶性有机氮研究现状[J].安徽农学通报,2012,18(24):89-97.[24] Chen L C,Guan X,Wang Q K,et al. Effects of phenolic acids on soil nitrogen mineralization over successive rotations in Chinese fir plantations [J]. Journal of Forestry Research,2020,31(1):303-311.[25] Hattenschwiler S,Vitousek P M. The role of polyphenols in terrestrial ecosystem nutrient cycling [J]. Trends Ecology & Evolution,2000,15(6):238-243.[26] Tian D L,Xiang W H,Yang W H. Nutrient characteristics of hydrological process in young second rotation Chinese fir plantations[J]. Acta Ecologica Sinica,2002,22(6):859-865.[27] Chen T H,Chiu C Y,Tian G L. Seasonal dynamics of soil microbial biomass in coastal sand dune forest [J]. Pedobiologia,2005,49(6):645-653.[28] 蒋永丰.苏北杨树人工林林地土壤氮矿质化特性研究[D].南京:南京林业大学,2006.[29] Liu L. Effect of different soil quality of Cunninghamia lanceolata plantations on microbial community and two functional groups [D]. Beijing:Chinese Academy of Sciences,2009.[30] Guntiñas M E,Leirós M C,Trasar-Cepeda C,et al. Effects of moisture and temperature on net soil nitrogen mineralization: A laboratory study [J]. European Journal of Soil Biology,2011,48:73-80.[31] 蔡春轶,黄建辉.四川都江堰地区桢楠林、杉木林和常绿阔叶林土壤N库的季节变化[J].生态学报,2006,26(8):2540-2548.[32] 孙素琪,王玉杰,王云琦,等.重庆缙云山4种典型林分土壤氮素动态变化[J].环境科学研究,2015,28(1):66-73.[33] 莫江明,郁梦德,孔国辉.鼎湖山马尾松人工林土壤硝态氮和铵态氮动态研究[J].植物生态学报,1997,21(4):335-341.[34] 张成霞,南志标.土壤微生物生物量的研究进展[J].草业科学,2010,27(6):50-57.[35] Devi N B,Yadava P S. Seasonal dynamics in soil microbial biomass C,N and P in a mixed-oak forest ecosystem of Manipur,North-east India [J]. Applied Soil Ecology,2006,31(3):220-227.[36] 刘满强,胡锋,何园球,等.退化红壤不同植被恢复下土壤微生物量季节动态及其指示意义[J].土壤学报,2003,40(6):937-944.[37] Myers R T,Zak D R,White D C,et al. Landscape-level patterns of microbial community composition and substrate use in upland forest ecosystems [J]. Soil Science Society of America Journal,2001,65(2):359-367.[38] Barbhuiya A R,Arunachalam A,Pandey H N,et al. Dynamics of soil microbial biomass C,N and P in disturbed and undisturbed stands of a tropical wet-evergreen forest [J]. European Journal of Soil Biology,2005,40(3):113-121.[39] Piao H C,Hong Y T,Yuan Z Y. Seasonal changes of microbial biomass carbon related to climatic factors in soils from karst areas of southwest China[J]. Biology and Fertility of Soils,2000,30(4):294-297.
相似文献/References:
[1]王伟峰,魏晓华,段玉玺,等.采伐剩余物处理方式对杉木人工林固碳量的长期影响[J].水土保持研究,2016,23(06):198.
WANG Weifeng,WEI Xiaohua,DUAN Yuxi,et al.Long-term Effects of Logging Residue Treatment on Carbon Sequestration in Chinese Fir Plantation[J].Research of Soil and Water Conservation,2016,23(05):198.
[2]王东,王艳平,陈信力,等.间伐对杉木人工林土壤理化性质的季节影响[J].水土保持研究,2015,22(02):69.
WANG Dong,WANG Yanping,CHEN Xinli,et al.Seasonal Dynamics of Soil Physical and Chemical Properties after Thinning for 7 Years in Chinese Fir Plantation[J].Research of Soil and Water Conservation,2015,22(05):69.
[3]严恩萍,林辉,洪奕丰,等.杉木人工林叶面积指数估测及影响因子分析[J].水土保持研究,2013,20(04):75.
YAN En-ping,LIN Hui,HONG Yi-feng,et al.Analysis on LAI Estimation and Its Effecting Factors for Chinese Fir Plantation[J].Research of Soil and Water Conservation,2013,20(05):75.
备注/Memo
收稿日期:2020-09-21 修回日期:2020-10-21资助项目:国家自然科学基金(41603081),福建省科技厅自然科学基金青年创新项目(2018J05046)第一作者:任丽红(1995—),女,甘肃庆阳人,硕士研究生,研究方向为森林理水与保土功能。E-mail:R_lihong@163.com通信作者:王玉哲(1986—),男,山西临汾人,讲师,主要从事森林土壤碳氮循环方面的研究工作。E-mail:wangyuzhe@fafu.edu.cn