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
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

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.

关键词: 杨树, 细根, 氮素, 生物循环, 动态变化

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.

Key words: Poplar tree, Fine root, Biological cycling, Dynamics change

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]	何春霞, 胡晓创, 孙守家, 管崇帆, 李子静, 张劲松, 蔡金峰. 水力障碍、碳饥饿和中层土壤干燥造成杨树防护林的衰退和死亡 [J]. 应用生态学报, 2026, 37(5): 1353-1364.
[2]	黄波, 杨立学, 李凡, 董慧, 郝景祥. 石质陡坡条件下红松和樟子松的细根适应策略 [J]. 应用生态学报, 2026, 37(5): 1422-1430.
[3]	宋文文, 周伟, 夏海晓, 朱莉, 李贵勇, 朱世林, 邓奇奇, 陶有凤, 胡剑锋, 任万军. 不同生态条件下氮高效水稻氮素积累与利用特征 [J]. 应用生态学报, 2026, 37(3): 843-854.
[4]	陈姜帆, 张秋芳, 张晓晴, 陈琳娜, 元晓春, 徐建国, 曾泉鑫, 陈岳民. 长期氮添加促进毛竹根系磷吸收 [J]. 应用生态学报, 2025, 36(8): 2317-2324.
[5]	刘大源, 孟董悦, 于晨一, 李俊杰, 关庆伟. 麻栎纯林及混交林土壤团聚体磷组分特征及其影响因素 [J]. 应用生态学报, 2025, 36(8): 2344-2352.
[6]	袁超峰, 王文志, 吴喆虹, 苏勇, 罗玲卓. 健康与衰退樟子松和杨树径向生长响应气候及其生态弹性差异 [J]. 应用生态学报, 2025, 36(2): 411-417.
[7]	李娜, 蒋文婷, 陈增明, 王燕, 施曼, 李永夫, 余兵, 蔡延江. 林冠和林下氮沉降对毛竹林土壤氮素转化关键过程的影响 [J]. 应用生态学报, 2025, 36(12): 3718-3728.
[8]	黄锦学, 吴帆, 梁天豪, 傅贺菁, 景陈鸿, 杨智杰, 熊德成. 土壤增温对中亚热带格氏栲天然林细根化学计量学特征的影响 [J]. 应用生态学报, 2025, 36(11): 3256-3264.
[9]	杨雪, 曹霞, 白冰, 袁艳娜, 张宁, 谢洋, 武春成. 根施生物炭对设施连作土壤氮素转化及黄瓜幼苗根系氮代谢的影响 [J]. 应用生态学报, 2024, 35(3): 713-720.
[10]	姜静宜, 孙晓新, 王宪伟, 王淑洁, 马国宝, 陈宁, 杜宇. 大兴安岭多年冻土泥炭地土壤水可溶性有机碳夏秋季节变化特征及其影响因素 [J]. 应用生态学报, 2023, 34(9): 2413-2420.
[11]	李志丽, 王红梅, 赵亚楠, 周玉蓉. 荒漠草原灌丛引入过程中土壤氮矿化的季节动态及其影响因子 [J]. 应用生态学报, 2023, 34(8): 2161-2170.
[12]	杨毅轩, 陈应枝, 唐芃, 林文, 孙敏, 高志强. 播种方式对黄淮海麦区西部冬小麦氮素利用与产量形成的影响 [J]. 应用生态学报, 2023, 34(6): 1572-1582.
[13]	刘源豪, 杜旭龙, 黄锦学, 熊德成. 增温对林木细根寿命影响的研究进展 [J]. 应用生态学报, 2023, 34(6): 1693-1702.
[14]	张恒, 贾辉, 崔莹莹, 何露露, 肖好燕, 邹秉章, 王思荣, 万晓华. 亚热带人工幼林土壤呼吸与植物功能性状的关系 [J]. 应用生态学报, 2023, 34(11): 2898-2906.
[15]	王洁, 华一帆, 秦际远, 贺明荣, 鞠正春, 吕鹏, 邓淑珍, 代兴龙. 表油菜素内酯喷施时期对宽幅播种小麦产量和氮素利用率的影响 [J]. 应用生态学报, 2023, 34(1): 99-106.