[1]董贵青,张养安.黄土丘陵沟壑区不同植被覆盖对土壤氮素的影响[J].水土保持研究,2009,16(05):190-193.
　DONG Gui-qing,ZHANG Yang-an.Effect of Different Vegetation on Soil Nitrogen in Loess Hilly and Gully Area[J].Research of Soil and Water Conservation,2009,16(05):190-193.
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黄土丘陵沟壑区不同植被覆盖对土壤氮素的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 16 期数: 2009年05期 页码: 190-193 栏目: 出版日期: 2009-10-20
Title:
Effect of Different Vegetation on Soil Nitrogen in Loess Hilly and Gully Area
作者:
董贵青1, 张养安2
1. 商洛市水土保持监督管理站, 陕西 商洛 726000;
2. 杨凌职业技术学院, 陕西 杨陵 712100
Author(s):
DONG Gui-qing1, ZHANG Yang-an2
1. Soil and Water Conservation Monitoring Station, Shangluo, Shaanxi 726000, China;
2. Yangling Vocational & Technical College, Yangling, Shaanxi 712100, China
关键词:
纸坊沟; 植被覆盖; 土壤氮素
Keywords:
Zhifang gully watershed; vegetation cover; soil nitrogen
分类号:
S153.61;X171.1
摘要:
以纸坊沟的3个不同植被覆盖下的自然坡为对象，研究了氮素沿坡面的变化规律。结果表明：不同植被覆盖下土壤中碱解N含量的变化和全氮的变化基本相同，其基本变化趋势为：刺槐地土壤>柠条>茭蒿，只是全氮的变化幅度更大一些。茭蒿覆盖下的硝态氮含量明显少于刺槐和柠条；全氮和硝态氮在同种植被覆盖下沿坡面变化为坡下>坡上>坡中，铵态氮变化总的趋势没有硝态氮和全氮的变化趋势那么明显；而且，在不同的植物覆盖下的坡间差别也不是很明显，甚至出现了交叉的现象。同时由刺槐的变化可以看出林草结合在防止氮素流失和提高土壤的氮素富集上要比单独一种植被覆盖强的多。
Abstract:
The nitrogen content on three natural slopes in Zhifanggou watershed which is covered by different vegetation,were measured for revealing the nitrogen changes along these slopes.The results show that the change of the Alkali-hydrolyzable nitrogen is similar to total nitrogen and its basic change trend is: Robinia pseudoacacia>Caragana korshinski>Artemisia giraldi, however the change of total nitrogen is bigger than Alkali-hydrolyzable nitrogen.The content of nitrate nitrogen on the slope which is covered by Artemisia giraldⅡ is more than Robinia pseudoacacia and Caragana korshinski. Under the same condition of vegetation,the change of nitrate nitrogen and total nitrogen along the slope is the content on the foot of slope>the top of the slope>the middle of the slope.The change of ammonium nitrogen is not more obvious than the nitrate nitrogen and total nitrogen,and the difference among the slopes which are covered by different coverage is also not very obvious.At the same time from the variety of Robinia pseudoacacia the conclusion can be summarized that integrating of forest and grass can keep the nitrogen from runoff and raising the nitrogen enrich.

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备注/Memo

收稿日期:2009-8-7;
作者简介:董贵青(1963-)，男，工程师，主要从事水土保持与生态恢复方面的研究工作。E-mail：dongguiqing001@126.com

更新日期/Last Update: 1900-01-01