[1]韩新生,许 浩,蔡进军,等.立地因子和盖度对宁南黄土区中庄小流域玉米土壤水分的影响[J].水土保持研究,2023,30(06):112-122.[doi:10.13869/j.cnki.rswc.2023.06.015]
　Han Xinsheng,Xu Hao,Cai Jinjun,et al.Effects of Site Factor and Coverage on Soil Moisture of Maize Field in Zhongzhuang Small Watershed in the Loess Area of Southern Ningxia[J].Research of Soil and Water Conservation,2023,30(06):112-122.[doi:10.13869/j.cnki.rswc.2023.06.015]
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立地因子和盖度对宁南黄土区中庄小流域玉米土壤水分的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 30 期数: 2023年06期 页码: 112-122 栏目: 出版日期: 2023-10-10
Title:
Effects of Site Factor and Coverage on Soil Moisture of Maize Field in Zhongzhuang Small Watershed in the Loess Area of Southern Ningxia
文章编号:
1005-3409(2023)06-0112-11
作者:
韩新生1,2, 许 浩1, 蔡进军3,4, 董立国1, 郭永忠1, 安 钰1, 万海霞1, 王月玲1
(1.宁夏农林科学院 林业与草地生态研究所 宁夏防沙治沙与水土保持重点实验室 宁夏生态修复与多功能林业综合研究中心, 银川 750002; 2.中国水利水电科学研究院, 北京 100038; 3.宁夏农林科学院 农业资源与环境研究所, 银川 750002; 4.西北农林科技大学 资源环境学院, 陕西 杨凌 712100)
Author(s):
Han Xinsheng1,2, Xu Hao1, Cai Jinjun3,4, Dong Liguo1, Guo Yongzhong1, An Yu1, Wan Haixia1, Wang Yueling1
(1.Research Center for Ecological Restoration and Multi-Functional Forestry of Ningxia,Ningxia Key Laboratory of Desertification Control and Soil and Water Conservation,Institute of Forestry and Grassland Ecology,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan 750002,China;2.China Institute of Water Resources and Hydropower Research,Beijing 100038,China;3.Institute of Agricultural Resources and Environment,Ningxia Academy of Agriculture and Forestry,Yinchuan 750002,China;4....)
关键词:
土壤水分;  立地因子;  植被盖度;  玉米;  黄土区
Keywords:
soil moisture;  site factor;  vegetation coverage;  maize;  loess region
分类号:
S152.7
DOI:
10.13869/j.cnki.rswc.2023.06.015
文献标志码:
A
摘要:
[目的]探讨立地因子和植被盖度对小流域玉米土壤水分空间变异的影响,可为流域植被种植结构优化调整和作物合理空间布局提供理论基础。[方法]以宁夏南部黄土丘陵区中庄小流域旱地玉米为对象,在2021年生长季中期采用土钻法获取200 cm深的土壤含水量,并分析了坡向、坡位、盖度对土壤水分的影响。[结果]小流域玉米土壤含水量平均为11.93%,其中,川地土壤含水量平均为13.97%,显著高于梯田。小流域玉米盖度平均为0.39,川地盖度为0.45,显著高于梯田; 在梯田玉米中,阳坡盖度显著高于阴坡,下坡位显著高于上坡位; 随盖度增加,川地玉米土壤水分呈降低或先下降后稳定的变化,梯田阴坡上坡位呈升高趋势,阳坡上坡位呈降低趋势,其他坡位变化不明显。阴坡土壤水分高于阳坡,上坡位高于下坡位,两者间差异不显著; 当盖度为0～0.3,0.3～0.6时,上坡位土壤水分高于下坡位,盖度为0.6～0.9时,下坡位高于上坡位。随土层加深,小流域、川地、梯田、不同盖度、不同立地土壤水分大致均呈先微弱变化、再迅速升高、后逐渐稳定,且大多数均属中等变异性。[结论]中庄小流域旱地玉米土壤水分空间变异明显,且盖度、坡向、坡位对土壤水分影响较大,未来应加强不同生育期玉米土壤水分的监测研究。
Abstract:
[Objective] Exploring the effects of site factors and vegetation coverage on the spatial variability of soil moisture of maize field in small watershed can provide a theoretical basis for the optimization and adjustment of vegetation planting structure and reasonable spatial layout of crops in the watershed. [Methods] The dryland maize in the Zhongzhuang small watershed in the loess hilly area in southern Ningxia was taken as the object, and the soil water content at a depth of 200 cm was obtained by soil drilling method in the middle of the growing season in 2021. The influence of slope aspect, slope position and cover on soil water content was analyzed. [Results] The average soil water content of corn field in small watersheds was 11.93%, and the average soil water content in plat fields was 13.97%, which was significantly higher than that of terraced fields. The average coverage of maize in small watersheds was 0.39, and the coverage in plat fields was 0.45, which was significantly higher than that of terraced fields. In corn terrace, the coverage of sunny slopes was significantly higher than that of shady slopes, and the coverage of downslopes was significantly higher than that of upslopes. As the coverage increased, the soil moisture of maize plat fields decreased or first decreased and then stabilized. The soil moisture of upslope of terraced shady slopes showed an increasing trend, the soil moisture of upslope of sunny slopes showed a decreasing trend, and soil moisture of the other slopes did not change significantly. The soil moisture of the shady slope was higher than that of the sunny slope, and the soil moisture of upper slope was higher than the downward slope, and the difference between them was not significant. When the coverage was 0～0.3 and 0.3～0.6, the soil moisture in the upslope was higher than that the downslope, and when the coverage was 0.6～0.9, the downslope was higher than the upslope. With the deepening of the soil layer, the soil moisture in small watersheds, flat fields, terraced fields, different coverage and different sites generally showed weak changes at first, then increased rapidly, and then gradually stabilized, and most of them were of moderate variability. [Conclusion] The spatial variation of soil moisture in dryland maize in Zhongzhuang small watershed is obvious, and the coverage, slope aspect and slope position have great influence on soil moisture. In the future, the monitoring of soil moisture in maize field at different growth stages should be strengthened.

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备注/Memo

收稿日期:2022-10-17 修回日期:2022-10-31
资助项目:宁夏农业高质量发展和生态保护科技创新示范课题(NGSB-2021-11-06,NGSB-2021-14-01,NGSB-2021-14-02); 宁夏重点研发计划“引才专项”(2022YCZX0054); 宁夏重点研发计划(2020BCF01001,2021BEG03017)
第一作者:韩新生(1988—),男,河南博爱人,博士,副研究员,主要从事生态水文研究。E-mail:hanxinsheng123@126.com

更新日期/Last Update: 2023-10-10