| 半干旱黄土丘陵区雨季土壤水分动态分析 |
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| 引用本文： | 艾宁,强方方,朱清科,魏天兴,秦伟,葛根巴图,王瑜.半干旱黄土丘陵区雨季土壤水分动态分析[J].土壤通报,2017(2):326-334. |
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| 作者姓名： | 艾宁 强方方 朱清科 魏天兴 秦伟 葛根巴图 王瑜 |
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| 作者单位： | 1. 延安大学生命科学学院,陕西延安716000;中国水利水电科学研究院,北京100044;2. 延安大学生命科学学院,陕西延安,716000;3. 北京林业大学水土保持学院,北京,100083;4. 中国水利水电科学研究院,北京,100044;5. 中国林业科学研究院沙漠林业实验中心,内蒙古磴口,015200 |
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| 基金项目： | 国家科技支撑计划课题“困难立地植被恢复技术研究与示范(2015BAD07B02)”及延安大学博士启动基金(YDBK2016-12) |
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| 摘 要： | 降水是半干旱黄土丘陵区土壤水分的主要来源,雨季又是该区域降水发生的主要时期,因此对该区域雨季土壤水分进行研究具有一定意义。通过对半干旱黄土丘陵区雨季土壤含水量实施定位监测,对比分析雨季降雨量与近5年不同植被类型土壤含水量的关系,得到如下结论:(1)不同植被类型在雨季的土壤含水量主要受雨季以及雨季前一个月降雨量的影响;(2)雨季各个植被类型30~70 cm的土壤水分含量均较低;(3)干旱年雨季土壤含水量的变异性较普通年份和湿润年份高;表层土壤含水量变异系数最小,土层越深变异系数越高。对不同植被类型下雨季降雨与土壤水分相关关系的研究,旨在为今后该区域退耕地营林造林中的植被选取、低效林改造以及植被恢复重建提供理论依据。
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| 关 键 词： | 雨季 植被类型 土壤水分 黄土丘陵区 |
Dynamic Analysis for Soil Moisture during the Rainy Season at Semiarid Loess Hilly Region |
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| AI Ning,QIANG Fang-fang,ZHU Qing-ke,WEI Tian-xing,QIN Wei,GE Gen-ba-tu,WANG Yu.Dynamic Analysis for Soil Moisture during the Rainy Season at Semiarid Loess Hilly Region[J].Chinese Journal of Soil Science,2017(2):326-334. |
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| Authors: | AI Ning QIANG Fang-fang ZHU Qing-ke WEI Tian-xing QIN Wei GE Gen-ba-tu WANG Yu |
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| Abstract: | Precipitation is the main source of soil moisture in semiarid loess hilly region and mainly occurred in the rainy season.Thus,it is important to study soil moisture dynamics during rainy season in this region.In this paper,we collected the data of soil moisture and precipitation in recently 5 years during rainy season under10 different vegetation types.The results showed that:(1) Soil moisture of rainy season was mainly affected by the rainfall amount at the current or before the rainy season;(2) During the rainy season,soil moisture content was low at 30-70 cm soil layer under different vegetation types;(3) Variable coefficient of soil moisture was higher in drought year than in normal and wet year;the variable coefficient was the highest at soil surface and it increased with deeper soil layer.Therefore,the research on the relationship between rainfall amount and soil moisture under different vegetation types would provide basic theory for vegetation choose,reconstruction of low efficiency stands and the vegetation restoration during the rainy season in the process of vegetation construction in the future. |
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| Keywords: | Rainy season Vegetation types Soil moisture Loess hilly region |
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