| 外加氮源对杉木叶凋落物分解及土壤养分淋失的影响 |
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| 引用本文： | 廖利平,高洪,汪思龙,马越强,黄志群,于小军.外加氮源对杉木叶凋落物分解及土壤养分淋失的影响[J].植物生态学报,2000,24(1):34-39. |
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| 作者姓名： | 廖利平 高洪 汪思龙 马越强 黄志群 于小军 |
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| 作者单位： | 中国科学院沈阳应用生态研究所,沈阳 |
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| 基金项目： | 中国科学院重大项目!( KZ95 1-A1-3 0 1)，特别支持项目!( KZ95 T-0 4) |
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| 摘 要： | 采用原位（Ｉｎ ｓｉｔｕ）模拟实验方法研究了外加Ｎ源对杉木叶凋落物分解及土壤养分淋失的影响，结果表明，施加ＮＨ＾＋４－Ｎ时，杉木叶凋落物的失重率与对照（未加任何Ｎ的处理）相比，没有差异：而施加ＮＯ＾－１－Ｎ时，使杉木叶凋落物分解速率显著提高（ｐ＝０．０５，达１０％以上，与施加ＮＨ＾＋４－Ｎ相比，施加ＮＯ＾－３－Ｎ明显促进了杉木叶凋落物的分解（ｐ＝０．０５）。施加ＮＨ＾＋４－Ｎ和ＮＯ３＾－－Ｎ会产生
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| 关 键 词： | 杉木 外加N源 叶凋落物 分解 养分淋失 |
| 修稿时间： | 1999-03-05 |
THE EFFECT OF NITROGEN ADDITION ON SOIL NUTRIENT LEACHING AND THE DECOMPOSITION OF CHINESE FIR LEAF LITTER |
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| LIAO Li-Ping GAO Hong WANG Si-Long,MA Yue-Qiang HUANG Zhi-Qun and YU Xiao-Jun.THE EFFECT OF NITROGEN ADDITION ON SOIL NUTRIENT LEACHING AND THE DECOMPOSITION OF CHINESE FIR LEAF LITTER[J].Acta Phytoecologica Sinica,2000,24(1):34-39. |
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| Authors: | LIAO Li-Ping GAO Hong WANG Si-Long MA Yue-Qiang HUANG Zhi-Qun and YU Xiao-Jun |
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| Affiliation: | LIAO Li-Ping GAO Hong WANG Si-Long
MA Yue-Qiang HUANG Zhi-Qun and YU Xiao-Jun
(Shenyang Institute of Applied Ecology,the Academy of Sciences,Shenyang,110015) |
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| Abstract: | The effect of nitrogen addition on decomposition of Chinese fir leaf litter and soil nutrient leaching was studied in situ using a self designed lysimeter. The addition of nitrate significantly (p =0 05) increased weight loss leaf litter by 10% above non addition of N (control) and addition of ammonium treatments. The addition of ammonium had no effect relative to the control treatment.The addition of nitrate or ammonium had a negative effect on soil nutrient leaching. Leaching of NH 4 N and Ca 2 increased under the L NO 3 treatment when compared with the L N treatment, but no significant differences were detected (p>0 05). The addition of ammonium substantially increased the leaching of all base cations measured, with the exception of Na . The amount of nutrient elements increased whilst the soil was covered with Chinese fir leaf litter compared with the bare soil when leached with distilled water, but this effect was not significant (p>0 05). Calcium was the most easily leached of all the nutrient elements. |
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| Keywords: | Chinese fir Addition of nitrogen Leaf litter Decomposition Nutrient leaching |
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