杨树人工林下根系的氮素循环与动态特征

应用生态学报 ›› 2004, Vol. ›› Issue (3): 387-390.

杨树人工林下根系的氮素循环与动态特征

范世华^1,2, 李培芝², 王力华², 许思明²

1. 东北大学理学院, 沈阳 110004;
2. 中国科学院沈阳应用生态研究所, 沈阳 110016

收稿日期:2002-08-13 修回日期:2003-06-08 出版日期:2004-03-15
通讯作者: 范世华,男,1948年出生,硕士,教授,主要从事环境化学与微量元素研究、流动分析及联用技术研究和环境科学中的仪器分析方法研究,发表论文70余篇,E-mail:shfan@mail.neu.edu.cn
基金资助:
中国科学院沈阳生态实验站资助项目

Nitrogen cycling and its dynamic feature in fine roots of poplar trees and herbs

FAN Shihua^1,2, LI Peizhi², WANG Lihua², XU Siming ²

1. Collage of Science, Northwestern University, Shenyang 110004, China;
2. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China

Received:2002-08-13 Revised:2003-06-08 Online:2004-03-15

摘要/Abstract

摘要： 研究了辽宁沈阳地区人工林杨树细根及林下草本植物根系的N循环、积累和动态变化特征.结果表明,杨树人工林分条件下活细根中N储量为20.3kg·hm^-2,净积累量10kg·hm^-2,吸收量14.7kg·hm^-2,年存留量和归还量分别为9.6和5.1kg·hm^-2.周转期4年.整个生长季节杨树细根中N含量与土壤中水解N、NH₃-N无明显相关.杨树细根中N浓度与活细根生物量的变化趋势大体一致,两者呈显著正相关.根据杨树活细根中N含量可以估测杨树活细根生物量.该林分下的草本植物根系主要吸收NH₃-N,草根中N含量浓度变化与土壤中NH₃-N的变化趋势相同,两者呈显著正相关.

Abstract: The nitrogen cycling and its dynamic feature in fine roots of poplar trees and herbs were studied in Shenyang of Liaoning Province. The results showed that the nitrogen content in the standing biomass of fine roots of poplar trees and herbs was 20.3 kg穐m^-2,and its net accumulation was 10.0 kg穐m^-2. With regard to the biological cycling of nitrogen,the annual uptake was 14.6 kg穐m^-2 of which,the retention and the return was 9. 6 and 5.1 kg穐m^-2穣r^-1 respectively,and the turnover period was 4 year. The relationship between total nitrogen in roots of poplar trees, and herbs and the available nitrogen in soil was also studied, which indicated that there were similar dynamic trends between total nitrogen in herb roots and the NH₃-N in soil in growth season. The total nitrogen in fine roots of poplar trees was positively related to the biomass.

中图分类号:

Q945.1

范世华, 李培芝, 王力华, 许思明. 杨树人工林下根系的氮素循环与动态特征[J]. 应用生态学报, 2004, (3): 387-390.

FAN Shihua, LI Peizhi, WANG Lihua, XU Siming . Nitrogen cycling and its dynamic feature in fine roots of poplar trees and herbs[J]. Chinese Journal of Applied Ecology, 2004, (3): 387-390.

参考文献

[1] Cao C-G(曹凑贵),Zhang G-Y(张光远),Wang Y-H(王运华).1998.Situation of research nutrient cycling in agroecosystem.Chin J Ecol(生态学杂志),17(4):26～32(in Chinese)
[2] Chen X(陈欣),Yu W-T(宇万太),Zhang L(张璐).1995.Comparative study on internal and external cycling of poplar tree under different fertilizations Ⅱ.Effect of fertilization on concentration and storage of major nutrients in poplar leaves before and after leaf fallen.Chin J Appl Ecol(应用生态学报),6(4):346～348(in Chinese).
[3] Foster NW, Mmoison IK.1979.Distribution and cycling of nutrients in natural Pinus buniana ecosystem.Ecology, 57:110～120
[4] Gosz JR.1981.Nitrogen cycling in coniferous ecosystem.Ecol Bull, 33: 405 ～ 426
[5] Herrera R, et al.1981.Nitrogen cycling in a tropical amazonian rain forest: The coating of low mineral nutrient status.Ecol Bull,33: 493～ 505
[6] Li P-Z(李培芝),Fan S-H(范世华),Wang L-H(王力华)2001.Production andturnover rate of the fine roots for poplartree.Chin J Apppl Ecol(应用生态学报),12(6):829～832(in Chinese)
[7] Lin P(林鹏),Lin G-H(林光辉).1985.The rearearch of mangrove forest in Jiujiangkou area.Acta Phytoecol et Geobot Sin(植物生态学与地植物学从刊),9(1):21～30(in Chinese)
[8] Li Y-W(李玉文),Li Y(李英),Li J-Q(李俊清).1994.Nitrogen nutrient relation of the dominanttree species in Deciduous koraien pine forest and poPlar-birch forest.J Northeast For Uniu(东北林业大学学报),22(1):7～16(in Chinese)
[9] Luo R-Y(罗汝英).1983.Forest Pedology,Problem and Procedure.Bejing:Science Press.203～208(in Chinese)
[10] Melillo JM.1981.Nitrogen cycling in decciduous forests.Ecol Bull,133:427～442
[11] Shen S-M(沈善敏),YuW-T(宇万太),Zhang L(张璐),et al.1992 Internal and extemal nutrinet cyclings of poplar tree Ⅰ.Changes of nutrient storage in different parts of poPlar tree before and after leaf allen.Chin J Appl Ecol(应用生态学报),3(4):296～301(in Chinese)
[12] Shen S-M(沈善敏),YuW-T(宇万太),Zhang L(张璐),et al.1993.Internal and external nutrinet cyclings of poplar tree Ⅱ.Transferring and cycling of nutrients in and out of the tree before and after leaf fallen.Chin J Appl Ecol(应用生态学报),4(1):27～31(in Chinese)
[13] Wang Z(王战),et al.1980.Mamforesttypes on northem slope of Changbai Mountain and characteristics of their community structure.For Ecol 5ystem Res(森林生态系统研究),1:25～43(in Chinese)
[14] Yu W-T(宇万太),Chen X(陈欣),Zhang L(张璐),et al.1995.Comparative study on internal and external cycclngs of popalr tree under different fertilizations I Effect of fertilization on biomass of poplar tree and its internal and external cycling of N before and after leaf fallen.Chin J Appl Ecol(应用生态学报),6(4):341～345(in Chinese)

[1]	刘霞, 尹燕枰, 姜春明, 贺明荣, 王振林. 花后不同时期弱光和高温胁迫对小麦旗叶荧光特性及籽粒灌浆进程的影响 [J]. 应用生态学报, 2005, 16(11): 2117-2121.
[2]	孙谷畴, 赵平, 饶兴权, 蔡锡安, 曾小平. 供氮和增温对倍增二氧化碳浓度下荫香叶片光合作用的影响 [J]. 应用生态学报, 2005, 16(8): 1399-1404.
[3]	宇万太, 关焱, 李建东, 张璐, 马强. 氮和磷在饲养-堆腐环中的循环率及有机肥料养分利用率 [J]. 应用生态学报, 2005, 16(8): 1563-1565.
[4]	赵丽英, 邓西平, 山仑. 渗透胁迫对小麦幼苗叶绿素荧光参数的影响 [J]. 应用生态学报, 2005, 16(7): 1261-1264.
[5]	陈屏昭, 王磊, 代勋, 刘忠荣, 蒋彬, 樊钦平. 缺磷强光下脐橙的过剩能量耗散机制 [J]. 应用生态学报, 2005, 16(6): 1061-1066.
[6]	王空军, 张吉旺, 郭玉秋, 胡昌浩, 董树亭, 蒋高明. 我国北方玉米品种个体产量潜力与氮利用效率研究 [J]. 应用生态学报, 2005, 16(5): 879-884.
[7]	王空军, 张吉旺, 郭玉秋, 胡昌浩, 董树亭, 蒋高明. 我国北方玉米品种个体产量潜力与氮利用效率研究 [J]. 应用生态学报, 2005, 16(5): 879-884.
[8]	姬兰柱, 肖冬梅, 王淼. 模拟水分胁迫对水曲柳光合速率及水分利用效率的影响 [J]. 应用生态学报, 2005, 16(3): 408-412.
[9]	王进鑫, 黄宝龙, 王明春, 王迪海. 不同供水条件下侧柏和刺槐幼树的蒸腾耗水与土壤水分应力订正 [J]. 应用生态学报, 2005, 16(3): 419-425.
[10]	王淼, 姬兰柱, 李秋荣, 肖冬梅, 刘海良. 长白山地区红松树干呼吸的研究 [J]. 应用生态学报, 2005, 16(1): 7-13.
[11]	徐凯, 郭延平, 张上隆, 周慧芬, 郑毅. 草莓叶片光合作用对强光的响应及其机理研究 [J]. 应用生态学报, 2005, 16(1): 73-78.
[12]	应小芳, 刘鹏. 铝胁迫对大豆叶片光合特性的影响 [J]. 应用生态学报, 2005, 16(1): 166-170.
[13]	李海梅, 何兴元, 陈玮. 沈阳城市森林主要绿化树种——丁香的光合特性研究 [J]. 应用生态学报, 2004, (12): 2245-2249.
[14]	周晓梅, 郭继勋, 赵匠. 松嫩平原羊草草地土壤植物间铁的动态研究 [J]. 应用生态学报, 2004, (12): 2250-2254.
[15]	吴楚, 王政权, 范志强, 孙海龙. 氮胁迫对水曲柳幼苗养分吸收、利用和生物量分配的影响 [J]. 应用生态学报, 2004, (11): 2034-2038.