| 黄土丘陵沟壑区不同植被区土壤生态化学计量特征 |
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| 引用本文： | 朱秋莲,邢肖毅,张宏,安韶山.黄土丘陵沟壑区不同植被区土壤生态化学计量特征[J].生态学报,2013,33(15):4674-4682. |
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| 作者姓名： | 朱秋莲 邢肖毅 张宏 安韶山 |
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| 作者单位： | 1. 西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室,杨陵712100;西藏职业技术学院农林系,拉萨850030;西北农林科技大学资源环境学院,杨凌712100
2. 西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室,杨陵712100;西北农林科技大学资源环境学院,杨凌712100 |
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| 基金项目： | 国家自然科学基金重点基金(41030532); 国家自然科学基金面上项目(41171226);西北农林科技大学"优秀青年人才科研专项"(QN2011049)资助项目 |
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| 摘 要： | 以黄土丘陵沟壑区3个植被区(森林区、森林草原区、草原区)不同坡向土壤作为研究对象,对土壤有机C、全N、全P、全K含量及其化学计量特征进行了研究.结果表明,不同植被区、坡向和土层土壤养分含量及其化学计量特征均有明显不同.土壤有机C、全N变异性较大,全P、全K变异性较小.表层土壤养分含量显著高于底层土壤;同一土层之间有机C、全N含量变异性较大,全P、全K含量变异性较小.不同坡向之间养分含量不同,阴坡最大,阳坡最小.土壤养分含量受植被类型及植被盖度的影响,森林区＞草原区＞森林草原区.土壤C/N、C/P、C/K、N/P、N/K比都较稳定,C/N比的变化范围为5.65-12.57,平均值为9.44; C/P比的变化范围为3.62-17.32,平均值为8.15;C/K比的变化范围为0.10-0.55,平均值为0.26;N/P比的变化范围为0.43-1.38,平均值为0.86; N/K比的变化范围为0.01-0.05,平均值为0.03;P/K比值较稳定,为0.03.土壤有机C和全N极显著正相关,全N和全P极显著正相关.
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| 关 键 词： | 化学计量特征 黄土丘陵沟壑区 植被区 坡向 |
| 收稿时间： | 2012/12/10 0:00:00 |
| 修稿时间： | 2013/4/18 0:00:00 |
Soil ecological stoichiometry under different vegetation area on loess hilly-gully region |
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| ZHU Qiulian,XING Xiaoyi,ZHANG Hong and AN Shaoshan.Soil ecological stoichiometry under different vegetation area on loess hilly-gully region[J].Acta Ecologica Sinica,2013,33(15):4674-4682. |
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| Authors: | ZHU Qiulian XING Xiaoyi ZHANG Hong and AN Shaoshan |
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| Institution: | State Key Laboratory of Soil Erosion and Dryland Agriculture of Loess Plateau, Northwest A&F University, Yangling, Shanxi, 712100, China;Department of Agriculture and Forestry, Tibet Vocational and Technical College, Lhasa 850030, China;College of Resource and Environmental Science, Northwest Agriculture and Forestry University, Yangling, Shanxi, 712100, China;State Key Laboratory of Soil Erosion and Dryland Agriculture of Loess Plateau, Northwest A&F University, Yangling, Shanxi, 712100, China;College of Resource and Environmental Science, Northwest Agriculture and Forestry University, Yangling, Shanxi, 712100, China;State Key Laboratory of Soil Erosion and Dryland Agriculture of Loess Plateau, Northwest A&F University, Yangling, Shanxi, 712100, China;College of Resource and Environmental Science, Northwest Agriculture and Forestry University, Yangling, Shanxi, 712100, China;State Key Laboratory of Soil Erosion and Dryland Agriculture of Loess Plateau, Northwest A&F University, Yangling, Shanxi, 712100, China;College of Resource and Environmental Science, Northwest Agriculture and Forestry University, Yangling, Shanxi, 712100, China |
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| Abstract: | |
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| Keywords: | soil ecological stoichiometry loess hill and gully area vegetation area slope aspects |
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