[1]杨敏,赵西宁,高晓东,等.黄土高原人工林深层土壤水分利用研究[J].水土保持研究,2019,26(06):100-106.
 YANG Min,ZHAO Xining,GAO Xiaodong,et al.Deep Soil Moisture Use of Planted Forests in the Loess Plateau[J].,2019,26(06):100-106.
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黄土高原人工林深层土壤水分利用研究
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《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]

卷:
26卷
期数:
2019年06期
页码:
100-106
栏目:
出版日期:
2019-10-17

文章信息/Info

Title:
Deep Soil Moisture Use of Planted Forests in the Loess Plateau
作者:
杨敏12 赵西宁134 高晓东134 杨世伟3
1. 西北农林科技大学 旱区农业水土工程教育部重点实验室, 陕西 杨凌 712100;
2. 西北农林科技大学 水利与建筑工程学院, 陕西 杨凌 712100;
3. 西北农林科技大学 水土保持研究所, 陕西 杨凌 712100;
4. 中国科学院 水利部 水土保持研究所, 陕西 杨凌 712100
Author(s):
YANG Min12 ZHAO Xining134 GAO Xiaodong134 YANG Shiwei3
1. Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
4. Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China
关键词:
黄土高原人工林深层土壤水分根系土壤质地
Keywords:
the Loess Plateauplanted forestdeep soil moisturerootssoil texture
分类号:
S152.7
摘要:
探讨黄土高原人工林的深层土壤水分利用状况,对该区植被恢复的可持续发展具有重要意义。以黄土高原半干旱偏旱区、半干旱区、半湿润区的刺槐林和柠条林为研究对象,通过野外实地调查,分析了不同气候区人工林0-800 cm土层土壤水分含量、深层(200-800 cm)土壤水分消耗量及土壤耗水速率,探究了不同气候区人工林对深层土壤水分的影响。结果表明:(1)3个气候区农地土壤含水量显著高于刺槐林和柠条林。刺槐林、柠条林在2个气候区0-800 cm土层的土壤水分含量变化范围分别为6.64%~11.01%,6.38%~11.41%,均在半干旱偏旱区平均土壤含水量最低。(2)刺槐林和柠条林的深层土壤耗水量、深层土壤耗水速率均以半干旱偏旱区最高,分别为:808 mm,698 mm,32.33 mm/a,31.76 mm/a。(3)人工林在半干旱偏旱区和半干旱区的植物根系较半湿润区活跃,特别是在0-300 cm土层,对土壤水分影响较大。(4)土壤质地是人工林深层土壤水分变化的重要因素之一。黏粒含量与土壤水分呈正相关,砂粒含量与土壤水分呈负相关。半干旱偏旱区、半干旱区、半湿润区的黏粒含量依次增加,砂粒含量则相反。不同气候区人工林对深层土壤水分影响不同,同时受根系和土壤质地影响较大,因此选择合理的人工植被配置模式对深层土壤水的保护和持续利用非常重要。
Abstract:
Deep soil moisture use of planted forest in the Loess Plateau is discussed in this study, which is of great significance to sustainable development of revegetation. Based on field sampling of soil moisture of deep soil layers in the stands of Robinia pseudoacacia and Caragana Korshinskii Kom in the semi-humid zone, semi-arid zone and semi-arid/arid zone of the Loess Plateau, deep soil moisture consumption and deep soil moisture consumption rate were calculated to analyze the effect of afforestation on deep soil moisture in different climate zones. The results are as follows. (1) The soil moisture content of farmland is significantly higher than that of Robinia pseudoacacia and Caragana Korshinskii Kom. in different climate zones. Mean soil moisture contents in the depth of 0-800 cm of Robinia pseudoacacia and Caragana Korshinskii Kom. range from 6.64% to 11.01%, from 6.38% to 11.41%, respectively; with the lowest in the semi-arid/arid zone. (2) The deep soil moisture consumption and deep soil moisture consumption rate in the stands of Robinia pseudoacacia and Caragana Korshinskii Kom. are 808 mm, 698 mm and 32.33 mm/a, 31.76 mm/a, respectively. (3) Roots of the planted forests in semi-arid and semi-arid/arid zones are significantly active than those in semi-humid zones, especially in the depth of 0-300 cm layers, which has the great influence on soil moisture. (4) Soil texture is one of key factors affecting deep soil moisture status of planted forests. Soil moisture is positively correlated with the clay and silt contents and negatively correlated with sand content. The clay content increases gradually in semi-arid/arid zone, semi-arid zone and semi-humid zone, while the sand content is opposite. Afforestation has different impacts on deep soil moisture in different climate zones, and the deep soil moisture is greatly influenced by roots and soil texture. Thus, it is very important to choose the suitable vegetation arrangement pattern to protect and sustainably utilize the deep soil moisture.

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备注/Memo

备注/Memo:
收稿日期:2018-12-24;改回日期:2019-01-16。
基金项目:十三五国家重点研发计划(2016YFC0400204;2017YFC0403605);国家自然科学基金(41571506,41771316,51579212);陕西省重点科技创新团队计划(2017KCF-15)
作者简介:杨敏(1993-),女,四川成都人,硕士研究生,研究方向为农业水土资源利用与保护。E-mail:yangmin@nwafu.edu.cn
通讯作者:赵西宁(1976-),男,陕西渭南人,博士,研究员,主要从事农业水土资源高效利用研究。E-mail:xiningz@aliyun.com
更新日期/Last Update: 1900-01-01