[1]许喜明,陈海滨*,原焕英,等.黄土高原半干旱区人工林地土壤水分环境的研究[J].西北林学院学报,2006,21(05):60.
　XU Ximing,CHEN Haibin*,YUAN Huanying,et al.The Research of Artificial Forestland on Soil Water in the Semiarid of the Loess Plateau[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2006,21(05):60.
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黄土高原半干旱区人工林地土壤水分环境的研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第21卷
期数:
2006年05期
页码:
60
栏目:
林业基础科学
出版日期:
2006-10-30

文章信息/Info

Title:
The Research of Artificial Forestland on Soil Water in the Semiarid of the Loess Plateau
作者:
许喜明1; 陈海滨1*; 原焕英1; 王辉2
1.西北农林科技大学 林学院 , 陕西 杨陵 712100;2.陕西西汉高速公路有限公司，陕西 西安 7100007
Author(s):
XU Ximing1; CHEN Haibin1*; YUAN Huanying1; WANGHui2
1. College of Forestry, Northwest A F University, Yangling，Shaanxi 712100,China;2.Xihan Highway Co.LTD of Shaanxi Province,Xi`an,Shaanxi 710000,China
关键词:
黄土高原; 半干旱区; 土壤水分; 土壤干层
Keywords:
Loess Plateau; semiarid region; soil moisture; soil dry layer
分类号:
S714.5
文献标志码:
A
摘要:
对黄土高原半干旱丘陵沟壑区主要造林树种林地水分进行了研究。结果表明,该区域不同树种林地土壤含水量很低，接近于凋萎湿度，2002年5月，6 m深土壤平均含水量为5.02%5.12%，2003年5月为4.65%6.35%，降水作用仅发生在地表至2 m左右土层内，在1.84.0 m有明显的土壤干化现象,含水量保持在凋萎湿度。土壤干层的存在是该区域林地和荒坡土壤水分分布的普遍规律，主要是由特殊的气候条件造成的土壤水分收支长期亏损的积累结果，并非林木生长的必然现象。西北林学院学报21卷第5期许喜明等黄土高原半干旱区人工林地土壤水分环境的研究
Abstract:
The condition of soil water of main forestation trees in semiarid vegion on the Loess Plateau was studied , the results were as the following(1) the soil moisture contents of forestland were low, near to the wilting humidity. In May 2002, soil moisture within 6m depth was 5.02%5.12%, in May 2003, the soil moisture was 4.65%6.35%. The influence on soil moisture only took place within 2m depth, in 1.84.0m layer, there was obvious soil desiccation, and the soil moisture was on the wiltin humidity. (2) the distribution of soil moisture in different forestlands and wastelands indicated that the existence of dried soil layer was a general common phenomenon in this region.The cause of this phenomenon was from the longterm deficit of soil moisture due to the special climate conditions in this region,not from the growth of forest trees .

参考文献/References:

［1］孙长忠，黄宝龙. 黄土高原人工植被与其水分环境相互作用关系研究［J］. 北京林业大学学报，1998，20（3）714.
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［4］孙长忠，黄宝龙．单株平衡法的建立［Ｊ］．林业科学,1996，32（4）378381.
［5］王力，邵明安，侯庆春. 黄土高原土壤干层初步研究［Ｊ］． 西北农林科技大学学报(自然版)2001,29（4）3438.
［6］候庆春，韩蕊莲，韩仕峰. 黄土高原人工林草地“土壤干层”问题初探［J］. 水土保持通报，1999，5（5）1114.
［7］杨维西.试论我国北方地区人工植被的土壤干化问题［J］. 林业科学，1996，32（1）7885.(上接第6页)4结论与讨论通过对径流小区覆盖、敷盖、裸地3种情况下30、60 cm壤中流、105 cm地下径流特征观测与分析认为，各措施、土层深渗漏滞后历时最小为10 min，表层土壤壤中流滞后历时敷盖小区最小，覆盖小区610月滞后历时小于裸地，其他各月大于裸地，总历时敷盖>覆盖>裸地；初渗雨量随总雨量的增大而增大，其相关关系为幂函数（覆盖表层）、S曲线（覆盖底层、敷盖表层）、直线（敷盖底层、裸地表层）、二次曲线关系（裸地底层）；壤中流量与雨量、雨强、降雨历时、初渗雨量呈正相关关系，覆盖、敷盖小区壤中流量受雨量影响较大，而裸地小区壤中流量受雨强影响较大；表层壤中流历时与降雨因子有较好相关性，而底层壤中流历时与降雨因子相关性很差，表层壤中流历时与雨量呈线性（覆盖、敷盖）和倒数关系（裸地表层），底层壤中流历时与雨量、降雨历时呈线性正相关关系（覆盖、裸地）或不相关（敷盖），与雨强不相关，逐步回归结果表明降雨历时对壤中流历时影响最大，降雨量影响最小；壤中流流速与措施及土层深有关，在植被覆盖表层、敷盖表层与雨量相关性最好，在裸地表层与雨强相关性最好，在各小区底层流速均与降雨历时相关性最好。逐步回归结果表明,裸地小区壤中流受单因素影响，采取措施小区受多因素影响。 裸地地表径流量与壤中流量相关关系不显著，在采取2种措施后，地表径流量与壤中流量呈线性正相关关系，随地表径流量的增大，覆盖措施壤中流量增大幅度大于敷盖措施。

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备注/Memo

备注/Memo:
收稿日期20051206修回日期20051231基金项目国家自然科学基金（30170769；39770612）作者简介许喜明（1974），男，陕西白水人，助工，主要从事林业生态研究。*通讯作者陈海滨
更新日期/Last Update: 2010-05-04