[1]姚志杰,张社朝,陈云明.黄土丘陵区红豆草和苜蓿植物篱对土壤颗粒组成的影响[J].水土保持研究,2014,21(06):20-24.
　YAO Zhi-jie,ZHANG She-chao,CHEN Yun-ming.Effect of Sainfoin and Alfalfa Hedgerow on Soil Particles in Loess Hilly Region[J].Research of Soil and Water Conservation,2014,21(06):20-24.
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黄土丘陵区红豆草和苜蓿植物篱对土壤颗粒组成的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 21 期数: 2014年06期 页码: 20-24 栏目: 出版日期: 2014-12-28
Title:
Effect of Sainfoin and Alfalfa Hedgerow on Soil Particles in Loess Hilly Region
作者:
姚志杰1, 张社朝2, 陈云明3
1. 西北农林科技大学 资源环境学院, 陕西 杨凌 712100;
2. 陕西省防护林建设工作站, 西安 710082;
3. 西北农林科技大学 水土保持研究所, 陕西 杨凌 712100
Author(s):
YAO Zhi-jie1, ZHANG She-chao2, CHEN Yun-ming3
1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Shaanxi Work Station of Shelter Forests Construction, Xi’an 710082, China;
3. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China
关键词:
黄土丘陵区; 坡耕地; 植物篱; 土壤分形维数
Keywords:
loess hilly areas; sloping land; hedgerow; fractal dimension of soil
分类号:
S714
摘要:
以苜蓿、红豆草两种植物篱为研究对象，对黄土丘陵沟壑区坡耕地布设植物篱后不同坡位土壤颗粒含量的变化、土壤分形维数进行研究，分析了植物篱对土壤颗粒组成的影响。结果表明：（1）同坡面相比，中坡及下坡土壤极细沙粒与粗粉粒含量增加，细粉粒与黏粒含量减少，出现相对于上坡的土壤机械组成粗化现象，且下坡粗化程度大于中坡；（2）相对于对照坡面，植物篱坡面各坡位粗化现象均得到缓解，红豆草对土壤颗粒的影响在上坡表现明显，苜蓿的影响在下坡表现明显；（3）坡面土壤分形维数呈现上部 > 中部 > 下部，苜蓿 > 红豆草 > 对照样地；（4）土壤颗粒与土壤分形维数的相关性分析显示，土壤分形维数与极细沙粒、粗粉粒呈极显著（P < 0.01）负相关，与黏粒呈显著（P < 0.05）正相关。
Abstract:
To figure out the effect of hedgerow on soil particles in loess hilly region, the particle contents and fractal dimension of soil were measured, and the their correlation were analyzed at different slope positions in alfalfa and sainfoin hedgerows. The results showed that: (1) very fine sand and coarse silt contents increased from the top slope to the bottom slope, but contents of fine silt and clay decreased from the top slope to the bottom slope. Therefore, the coarsening of soil increased from the top slope to the bottom slope;(2) compared with control slope，hedgerows had significant effect on reducing the coarsening of soil at different slope positions, the effect of sainfoin hedgerow is more effective on soil particle in the top slope, while alfalfa hedgerow is more effective on the bottom slope; (3) the soil fractal dimension at different slope positions showed as following order: the top > the middle > the bottom, and for the order different hedgerow plots was alfalfa > sainfoin > control; (4) the fractal dimension of soil has negative correlation with the contents of very fine sand and coarse silt (P < 0.01), and has positive correlation with content of clay (P < 0.05).

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备注/Memo

收稿日期:2013-01-20;改回日期:2014-02-20。
基金项目:“十二五”农村领域国家科技计划“农田水土保持关键技术研究与示范”（2011BAD31B05-02）
作者简介:姚志杰(1988-),男,河南淮阳县人,硕士研究生,主要研究方向为农田水土保持。E-mail:yaozj2011@163.com
通讯作者:陈云明(1967-),男,陕西省澄城县人,研究员,博士,主要研究方向为植被生态。E-mail:ymchen@ms.iswc.ac.cn

更新日期/Last Update: 1900-01-01