检索结果-内蒙古大学图书馆

Soil water balance in response to rainfall variability over a dammed valley farmland in the Chinese Loess Plateau

Ecological Indicators 2025年 175卷

作者： Zheng, Han Bai, Jintao Niu, Panpan Peng, Tao Jin, Zhao Bao, Han Naqvi, Syeda Alveena Fatima Guan, Yijing Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education School of Environmental Science and Engineering Chang'an University Xi'an710054 China Institute of Global Environment Change Xi'an Jiaotong University Xi'an710049 China State Key Laboratory of Loess Science Xi'an710054 China Interdisciplinary Research Center of Earth Science Frontier Beijing Normal University Beijing100875 China School of Highway Chang'an University Xi'an710064 China Xi'an Key Laboratory of Geotechnical Engineering for Green and Intelligent Transport China

The dammed valley farmlands created by a mega land consolidation project are crucial in combating land degradation and sustaining food security in the Chinese Loess Plateau. Understanding the response of soil water balance to rainfall variability is essential for the effective water resources management in water scarcity regions facing global climate change. Based on continuous in situ 3-m soil water profile beneath a dammed valley maize farmland, the Hydrus-1D model was calibrated and then employed to simulate the soil water movement and water budgets during two maize growing seasons with contrasting hydrological conditions in 2019 (drought year) and 2020 (normal year). Results showed that the Hydrus-1D model could accurately depict the soil water dynamics at different depths during the two growing seasons. The simulated soil water storage changes (ΔS) and actual evapotranspiration (ET) also showed good agreement with the ΔS from soil water monitoring data and ET from eddy covariance method, respectively. The simulated data indicated that the maximum infiltration depth of rainfall (P) was 100 cm and 150 cm in 2019 and 2020, respectively. The soil water recharge from groundwater by capillary rise varied significantly with crop phenology and water availability, but with close sums during the two growing seasons (45.24 mm and 34.15 mm). ET dominated the soil water consumption for both years, with the ratio of ET to P of 0.98 and 0.73 during the growing seasons of 2019 and 2020, respectively. The simulated ΔS was pronouncedly lower in the drought year (51.79 mm) compared with the normal year (147.53 mm), representing 16.5 % and 30.3 % of the total growing-season P, respectively. The simulated deep drainage was 20.18 mm in 2020, but this value was reduced to zero in 2019. This research could deepen our understanding on the impacts of rainfall variability on soil water balance in the water-limited agricultural regions. © 2025 The Authors

关键词： Budget control

来源：评论

学校读者我要写书评

暂无评论

Time Series Analysis and Temporal Stability of Shallow Soil Moisture in a High-Fill Slope of the Loess Plateau, China

引用

Water (Switzerland) 2025年第8期17卷 1140-1140页

作者： Ji, Chenlin Wang, Tianyi Bao, Han Lan, Hengxing Dong, Qi Li, Langping Wang, Juntian Yang, Liya School of Highway Chang’an University Xi’an710064 China Xi’an710054 China Xi’an Key Laboratory of Geotechnical Engineering for Green and Intelligent Transport Xi’an710064 China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing100101 China School of Geological Engineering and Geomatics Chang’an University Xi’an710064 China Shaanxi Science & Technology Holding Group Co. Ltd. Xi’an710077 China Key Laboratory of Mine Ecological Effects and Systematic Restoration Ministry of Natural Resources Beijing100081 China

Precipitation-induced soil moisture dynamics are a key factor that plays a critical role in triggering slope failures and geological hazards. This study investigates the response of soil moisture in a high-fill slope to rainfall and explores the influence of the topographic conditions and rainfall characteristics on the soil moisture dynamics. The findings reveal that the topographic conditions significantly influence the soil moisture variability in the high-fill loess slope. The coefficient of variation (CV) follows a decreasing pattern, i.e., slope surface > slope step > flat terrain > slope foot, with the spatial variability diminishing as the depth increases. The response of moisture to rainfall is influenced by the rainfall characteristics. In this study, the peak lag time (PLT), which represents the time interval between the onset of rainfall and the occurrence of the peak cross-correlation coefficient (CCF) between soil moisture and rainfall, is analyzed. The results indicate that, under similar rainfall intensities, the PLT decreases with increasing rainfall amounts. Conversely, for comparable rainfall amounts, a higher rainfall intensity generally shortens the PLT at all positions except the slope step. On the slope scale, the temporal stability of soil moisture exhibits the order flat terrain > slope surface > slope step > slope foot, whereas, in the vertical profile, the temporal stability is positively correlated with the depth. This study provides valuable insights into the hydrological processes of loess high-fill slopes and contributes to understanding slopes’ hydrological transformation and evolution. © 2025 by the authors.

关键词： Soil moisture

来源：评论

学校读者我要写书评

暂无评论

Correction to: Failure mechanism and stability evaluation of rockslides with oblique intersecting faults as well as mitigation measures for slope − top platform collapse (Landslides, (2024), 10.1007/s10346-024-02416-4)

引用

Landslides 2025年第5期22卷 1771-1771页

作者： Li, Huaixin Yan, Changgen Shi, Yuling Lan, Hengxing Bao, Han Sun, Weifeng He, Zhe Ma, Dingle Wen, Kui Hu, Jiamin School of Highway Chang’an University Xi’an710064 China Xi’an Key Laboratory of Geotechnical Engineering for Green and Intelligent Transport Xi’an710064 China School of Geological Engineering and Geomatics Chang’an University Xi’an710054 China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing100101 China Center for Post−Doctoral Studies of Geological Resources and Geological Engineering Chang’an University Xi’an710054 China Key Laboratory of Ecological Geology and Disaster Control Xi’an710054 China

The authors regret that the list of authors that appeared in the original published article is incomplete. Here is the incomplete list of authors: Huaixin Li, Changgen Yan, Yuling Shi, Hengxing Lan, Han Bao, Weifeng Sun, Zhe He Here is the complete list of authors: Huaixin Li, Changgen Yan, Yuling Shi, Hengxing Lan, Han Bao, Weifeng Sun, Zhe He, Dingle Ma, Kui Wen, Jiamin Hu The original article has been corrected. © Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：