Article
Environmental Sciences
Binbin Lin, Yicheng Wang, Hejia Wang, Weihua Xiao
Summary: The study found that coal mining and soil-water conservation on the Loess Plateau have significant impacts on hydrological processes, with their contributions to runoff reduction increasing over time. However, uncertainties in model structure and parameters, as well as data accuracy, may lead to variations in results obtained.
Article
Engineering, Multidisciplinary
Fubo Zhao, Yiping Wu, Xiaowei Yin, Georgii Alexandrov, Linjing Qiu
Summary: The Grain-for-Green project on the Loess Plateau, the largest revegetation program in the world, can affect the water and carbon cycles due to land use changes. This study quantifies the impacts of revegetation-induced land use conversions on water and carbon cycles and identifies suitable areas for revegetation to benefit soil and water conservation and carbon sequestration.
Article
Engineering, Civil
Wenhai Shi, Tiantian Chen, Jiawen Yang, Qianfang Lou, Ming Liu
Summary: An accurate prediction of sediment yield at the watershed scale is crucial for sustainable watershed management and knowledge improvement. In this study, a modified sediment yield formula based on the modified universal soil loss equation (MUSLE) model was developed and tested using data from 1,341 storm events in 38 watersheds and applied to 256 storm events in five application watersheds. The results showed that the proposed method is highly accurate and outperforms the original MUSLE model. Furthermore, the proposed method was used to accurately predict sediment yield in five watersheds in the Loess Plateau region.
JOURNAL OF HYDROLOGY
(2022)
Article
Environmental Sciences
Lulu Bai, Peng Shi, Zhanbin Li, Peng Li, Zhun Zhao, Jingbin Dong, Lingzhou Cui
Summary: The slope-gully system on the Loess Plateau is greatly affected by soil erosion and loss of soil nutrients. Restoring vegetation can effectively reduce soil erosion and loss of nitrogen and phosphorus. This study found that different vegetation patterns significantly affected the loss of soil nitrogen and phosphorus, with the down-slope vegetation pattern being the most effective in reducing runoff and sediment yields, therefore reducing nitrogen and phosphorus loss. It is suggested to consider the lower part of the slope in vegetation restoration.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Geosciences, Multidisciplinary
Peng Shi, Lulu Bai, Zhun Zhao, Jingbing Dong, Zhanbin Li, Zhiqiang Min, Lingzhou Cui, Peng Li
Summary: The distribution of vegetation has an impact on soil carbon loss. It is suggested to restore vegetation in the down-slope area to reduce runoff, sediment, and soil carbon losses.
Article
Geosciences, Multidisciplinary
Baoyang Sun, Jigen Liu, Feipeng Ren, Hao Li, Guanhua Zhang, Jianye Ma, Bo Ma, Zhanbin Li
Summary: Soil erosion is more pronounced during late winter and early spring on the Loess Plateau of China, due to the alternating action of seasonal freeze-thaw and wind erosion. This study found that different slopes and soil types have a significant impact on runoff and sediment yield, with sandy loam having the highest mean runoff and sediment yield start times.
Article
Environmental Sciences
Xiaozhen Wang, Jianzhao Wu, Yulin Liu, Xuying Hai, Zhouping Shanguan, Lei Deng
Summary: A study assessed the carbon sequestration, water yield, and soil conservation in the Loess Plateau from 2000 to 2018. The results showed an increase in these ecosystem services during the study period. Precipitation was identified as the main driving factor for water yield, while vegetation index and slope played significant roles in carbon sequestration and soil conservation. The study highlighted the importance of land use in influencing the ecosystem services in different climatic zones.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Dengkui Zhang, Qi Wang, Xujiao Zhou, Erastus Mak-Mensah, Wucheng Zhao, Xiaole Zhao, Xiaoyun Wang, Qinglin Liu
Summary: This study investigated the effects of different mulching materials and ridge widths on sainfoin production and found that using biochar-soil mixture can increase fodder yield, water use efficiency, and condensed tannin content of sainfoin.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
Ge Wu, Suhua Fu, Guiyun Zhou, Bing Yin
Summary: This study investigated the impact of Gully Land Consolidation (GLC) on soil erosion and sediment yield in a Chinese Loess Plateau watershed. The results showed that GLC effectively reduced soil erosion and sediment yield, with the greatest impact observed in wet years. The reduction in sediment yield was attributed to the lowered slope gradients and sediment connectivity after GLC.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Engineering, Civil
Juan Xiao, Yao Wang, Jinxing Sun, Shuishi Xie, Yan Huang, Zhiwei Wan, Lihong Meng, Xiujuan Li, Keyuan Zhong
Summary: A distributed hydrological model divides watersheds into calculation units, and the different division schemes can affect the simulation results. This study focused on the impact of soil spatial aggregation on runoff and sediment load simulations by fixing land use and terrain factors. The results showed that increasing soil aggregation significantly increased both runoff and sediment load, providing valuable information for addressing hydrological model uncertainty.
JOURNAL OF HYDROLOGY
(2023)
Article
Agronomy
Peng Xu, Yuhong Gao, Zhengjun Cui, Bing Wu, Bin Yan, Yifan Wang, Ming Wen, Haidi Wang, Xingkang Ma, Zedong Wen
Summary: Organic fertilizers are important for improving farmland fertility. A study in the semi-arid area of the Loess Plateau in northwest China examined the effects of different nutrient sources and application rates on water consumption characteristics, grain yield, and water use efficiency of oilseed flax. The results showed that organic fertilizers significantly increased soil water storage capacity and reduced water consumption. Specifically, the application of 25,000 kg/hm² sheep manure improved soil water storage, reduced water consumption, and increased grain yield and water use efficiency.
Article
Engineering, Civil
Dipesh Nepal, Prem B. Parajuli, Ying Ouyang, S. D. Filip To, Nuwan Wijewardane
Summary: This study examines the hydrology and water quality modeling in a watershed with the introduction of multi-year land use and land cover (LULC) input. The results show that the dynamic LULC input improves the performance of the model compared to the static LULC input, allowing for a more accurate analysis of the effects of historical LULC change. Additionally, agricultural management operations enable a more realistic simulation of runoff, sediments, total nitrogen, and total phosphorus.
JOURNAL OF HYDROLOGY
(2023)
Article
Agronomy
Wenjia Yang, Naitong Yan, Jiali Zhang, Jiakun Yan, Dengke Ma, Shiwen Wang, Lina Yin
Summary: This study evaluated the applicability of water-permeable plastic film (WPF) and biodegradable film (BF) as alternatives to polyethylene film (PEF) in millet, sorghum, and corn in the northern Loess Plateau of China. The results showed that WPF successfully retained ineffective precipitation, improved soil water conditions, and increased crop yields. On the other hand, BF was not suitable for crops with long growth period and low leaf area index (LAI).
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Geosciences, Multidisciplinary
Hongyu Wu, Yongqing Ren, Zhao Wang, Yufei Yao, Weibo Kong, Xiaoning Zhao, Kaiqiang Bao, Guohua Rong, Xiaorong Wei
Summary: The impact of upslope runoff and sediment on the spatial distribution of soil nutrients on different width slopes varies, which is crucial for assessing the effects of erosion on soil biogeochemical cycles.
Article
Agronomy
Shenqiang Lv, Jia Li, Zeyu Yang, Ting Yang, Huitong Li, Xiaofei Wang, Yi Peng, Chunju Zhou, Linquan Wang, Ahmed I. Abdo
Summary: This study investigated the effects of ridge tillage and plastic film or straw mulching on yield stability, soil water storage, nitrogen budget, and soil nitrogen and organic carbon contents in rain-fed spring maize on the Loess Plateau. The results showed that plastic film mulching increased maize yield and stability, improved water use efficiency, and maintained soil nitrogen and organic carbon contents. However, the potential impact of microplastic contamination should be considered.
AGRICULTURAL WATER MANAGEMENT
(2023)