[1]梁海斌,史建伟,李宗善,等.晋西北黄土丘陵区不同林龄柠条林地土壤干燥化效应[J].水土保持研究,2018,25(02):87-93.
　LIANG Haibin,SHI Jianwei,LI Zongshan,et al.Evaluation of Soil Desiccation Intensity in Different Ages of Caragana korshinskii Kom. in Loess Hilly Region, Northwestern Shanxi[J].Research of Soil and Water Conservation,2018,25(02):87-93.
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晋西北黄土丘陵区不同林龄柠条林地土壤干燥化效应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 25 期数: 2018年02期 页码: 87-93 栏目: 出版日期: 2018-04-03
Title:
Evaluation of Soil Desiccation Intensity in Different Ages of Caragana korshinskii Kom. in Loess Hilly Region, Northwestern Shanxi
作者:
梁海斌1,2,3, 史建伟3, 李宗善1, 牛俊杰3,4
1. 中国科学院 生态环境研究中心 城市与区域生态国家重点实验室, 北京 100085;
2. 中国科学院大学, 北京 100049;
3. 山西大学 黄土高原研究所, 太原 030006;
4. 太原师范学院 汾河流域科学发展研究中心, 太原 030012
Author(s):
LIANG Haibin1,2,3, SHI Jianwei3, LI Zongshan1, NIU Junjie3,4
1. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China;
4. Research Center for Science Development in Fenhe River Valley, Taiyuan Normal University, Taiyuan 030012, China
关键词:
土壤水分; 土壤干层; 柠条; 土壤干燥化; 黄土丘陵区
Keywords:
soil water content; desiccated soil layer; Caragana korshinskii Kom.; soil desiccation; The Loess Hilly Region
分类号:
S152.7;S793.3
摘要:
开展晋西北黄土丘陵区土壤干燥化效应研究对该区域植被恢复重建具有重要的现实意义。以晋西北五寨县张家坪林场3种不同林龄的人工柠条林为研究对象，对照撂荒地，分别对其2013年生长季（4-10月）0-600 cm深层土壤水分进行了测定分析。结果表明：研究区内的不同林龄柠条林及撂荒地均发生了不同程度的土壤水分亏缺及土壤干燥化现象。（1）不同林龄柠条林及撂荒地由于降雨的入渗补充，除部分土层剖面土壤储水量有少量亏缺外，其余均呈不同程度的盈余状态，土壤储水量总体变化情况为：20 a柠条 > 10 a柠条 > 35 a柠条 > 撂荒地；（2）不同林龄柠条林0-600 cm土层的土壤干燥化强度达轻度至中度干燥化强度，平均土壤干层厚度达447 cm，并且随着林龄的增长，土壤干燥化的强度逐渐加强，各强度土壤干燥层厚度、总干层厚度及干化深度均呈增加趋势。而对照撂荒地的土壤干燥化指数SDI值为78%，并以轻度和中度干燥层居多；（3）综合考虑各降水年型，不同林龄柠条林及撂荒地剖面土壤干层水分恢复所需年限随着林龄的增加而逐渐增加，土壤湿度恢复难度呈增加趋势。
Abstract:
It was of great significance to carry out a study on the evaluation of soil desiccation intensity for vegetation restoration in water-limited hilly areas of the Loess Plateau. In this paper, soil moisture dynamics in profile with depth of 600 cm was measured under three different ages of Caragana shrub sites and the uncultivated land at Zhangjiaping forestry station of Wuzhai County in the growing season (from April to October) in 2013. By analyzing, there were different levels of soil water deficits and soil desiccation in each sample plot, and the main findings were as follows:(1) As for the rainfall infiltration function, most of the soil layers showed the surplus state except for few soil layers, and the overall water storage in different ages of Caragana shrubs decreased in the order:20-year Caragana > 10-year Caragana > 35-year Caragana > the uncultivated land. (2) In general, soil desiccation level reached to the mild or moderate desiccation intensity at each sampling site, and the average thickness of desiccated soil layer was approximately 447 cm. Both of the dried soil density, total thickness of the desiccated soil layer and the initial formation depth of soil dry layers gradually increased with the growth age of forest. (3) With respect to all kinds of precipitation years, the time needed for water restoration in desiccated soil layers increased with the increase of forest ages. Meanwhile, the difficulty coefficient for soil moisture restoration gradually experienced the increasing trend as well.

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备注/Memo

收稿日期:2017-1-17;改回日期:2017-5-17。
基金项目:国家自然科学基金重大项目“黄土高原草灌生态系统对土壤水变化的响应机制”（41390462）；国家自然科学基金“晋西北生态重建优势种林地土壤水分研究——以沙棘和柠条为例”（41171423）
作者简介:梁海斌(1988-),男,山西孝义人,博士研究生,研究方向为全球变化与区域生态。E-mail:lhb1011@126.com
通讯作者:史建伟(1975-),男,山西岚县人,博士,主要从事植物生理生态学、土壤水文学研究。E-mail:sjwsx@sxu.edu.cn;李宗善(1977-),男,山东潍坊人,博士,主要从事树木年轮气候学、生态水文学研究。E-mail:zsli_st@rcees.ac.cn

更新日期/Last Update: 1900-01-01