Article
Geosciences, Multidisciplinary
Bingbing Ding, Yonge Zhang, Xinxiao Yu, Guodong Jia, Yusong Wang, Pengfei Zheng, Zedong Li
Summary: Seasonal freeze-thawing has a significant impact on the movement and distribution of soil moisture, affecting the management of agroforestry. This study analyzed the differences in freeze-thawing between farmland and shelterbelt in arid and semi-arid regions of northern China. The results showed that the shelterbelt was more resistant to freezing, maintaining higher soil temperature and lower fluctuations in soil moisture compared to farmland. These findings provide valuable insights for developing appropriate management strategies for agriculture and forestry.
Article
Soil Science
Yutian Zuo, Fanxiang Meng, Tianxiao Li, Qiang Fu, Dong Liu, Renjie Hou, Qinglin Li, Mo Li
Summary: The appropriate application of biochar has significant effects on mitigating soil freezing-thawing deformation, enhancing soil aggregate stability, and increasing organic matter content.
Article
Engineering, Civil
Zeng Cui, Ze Huang, Yu-Bin Wang, Jia-Xin Qian, Gao-Lin Wu
Summary: The increasing global vegetation has exacerbated soil water consumption and desiccation, posing a threat to the survival and sustainability of vegetation, especially in semi-arid and arid areas. However, forestland-to-farmland conversion can improve soil water infiltration rate and replenishment in the short term by changing porosity. These findings have potential implications for effective mitigation of soil water deficit caused by afforestation and provide a new idea or method for addressing dry soil layers caused by artificial forestland in semi-arid areas.
JOURNAL OF HYDROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Ze Huang, Zeng Cui, Yu-Bin Wang, Jia-Xin Qian, Manuel Lopez-Vicente, Gao-Lin Wu
Summary: Flood irrigation is a widely used farming technique, but it often leads to water evaporation and reduced soil moisture in semi-arid and arid regions. This study found that ice-covered soil after flood irrigation can effectively maintain high soil moisture levels, improving water replenishment efficiency.
Article
Water Resources
Yutian Zuo, Qiang Fu, Tianxiao Li, Dong Liu, Renjie Hou, Qinglin Li, Mo Li, Fanxiang Meng
Summary: This study investigated the effects of different biochar application amounts on the soil structure and snowmelt process in farmland black soil through laboratory simulation tests. The results showed that biochar addition increased soil total porosity and stability of soil aggregates, while also affecting soil water conductivity and snowmelt transport. Furthermore, biochar application had a varying impact on evaporation, infiltration, and runoff during the snowmelt period.
HYDROLOGICAL PROCESSES
(2022)
Article
Environmental Sciences
Erqing Wang, Junfeng Chen, Lei Liu, Lihong Cui, Jing Xue, Jiameng Ren, Qi Du
Summary: Research on water, heat, and salt variation in unsaturated zones during the freeze-thaw process is important for efficient water resource utilization and soil salinization prevention. A freeze-thaw field experiment was conducted using a lysimeter to analyze soil freeze-thaw characteristics, water content, ion content, and salt content of three textured soils with a groundwater table depth of 0.5 m. Results showed that soil temperature gradient and freezing depth increased with average soil particle size. Water content increment in sandy loam and loamy sand at a depth of 0 to 30 cm decreased by 40.20-93.10% and 28.14-65.52% compared to sandy soil, and salt content increment decreased with increasing soil particle size. The content of Ca2+, Na+, Cl-, and SO42- in loamy sand and sandy soil decreased by 4.37-45.50% and 22.60-70.42% compared to sandy loam at the end of the freeze-thaw period. The correlation between soil salt content and water content weakened with increasing soil particle size. These findings provide theoretical support for soil salinization prevention and crop production in shallow groundwater areas.
Article
Agronomy
Yawen Liu, Jingwei Wu, Hang Zhao, Changsen Li, Jun Mao, Rui Zhang, Jie Liu, Qiang Zhao
Summary: This study investigated the migration characteristics of salt ions during the freeze-thaw process and identified the effects of inconsistencies in ions transport on the development of soil salinization. It was found that salt ions mainly accumulated in the frozen soil layer during freezing and in the topsoil during thawing. The freeze-thaw process also changed the composition of the main salt anions. The findings of this study are of great significance for the management and control of soil salinization in saline areas before spring sowing.
Article
Environmental Sciences
Chuanxing Liu, Yiqiao Wang, Haohui Chen, Qiuyu Sun, Qiuxiang Jiang, Zilong Wang
Summary: Changes in the soil environment caused by winter warming affect the carbon and nitrogen cycles of seasonal freeze-thaw farmland soil. Different degrees of warming increase soil carbon and nitrogen content, microbial biomass, and greenhouse gas emissions. However, high-level winter warming can lead to nutrient loss in the soil and disrupt the seasonal coupling relationship between crop nutrient acquisition and soil microbial nutrient supply.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Sheng Liu, Quanzhong Huang, Wenxin Zhang, Dongyang Ren, Xu Xu, Yunwu Xiong, Guanhua Huang
Summary: Soil bulk density (BD) plays a significant role in soil hydrothermal properties and water holding capacity. Changes in BD under freeze/thaw conditions can affect the estimation of soil water-salt dynamics. Ignoring BD changes can lead to overestimation or underestimation of soil water content, water fluxes, and soil hydrothermal properties.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Nai-Wen Hu, Hong-Wen Yu, Qi-Rong Wang, Guo-Peng Zhu, Xiu-Tao Yang, Tian-Ye Wang, Yang Wang, Quan-Ying Wang
Summary: Freeze-thaw action facilitates the mobilization of colloid-associated contaminants in soil. This study explores the potential influence mechanisms of autumn freeze-thaw (AFT) and spring freeze-thaw (SFT) on the generation and migration of colloids and colloid-associated cadmium (Cd) in soil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Haoming Fan, Yunqing Hou, Xiuquan Xu, Caihong Mi, Hao Shi
Summary: Snowmelt erosion can cause significant damage to the soil quality and agricultural production conditions of slope farmland in the black soil region of northeast China. Contour ridge tillage is an effective measure to reduce soil loss, but its characteristics and impact on snowmelt erosion have not been thoroughly studied, especially at the field scale.
Article
Agronomy
Wanning Wang, Weishu Wang, Pu Wang, Xianghao Wang, Liwen Wang, Chaozi Wang, Chenglong Zhang, Zailin Huo
Summary: Straw return can reduce soil freezing depth and inhibit soil evaporation in cold/dry agricultural regions. However, the influence of crushed corn straw return mixed with the topsoil on water and heat flux during soil freezing and thawing is still unclear. The results showed that straw return inhibited the variations in soil temperature during freeze-thaw period and reduced the freezing rate.
AGRICULTURAL WATER MANAGEMENT
(2023)
Article
Environmental Sciences
Jinwen Pang, Yuhao Wang, Bingfan Wang, Jiayi Wang, Enke Liu, Fei Gao, Shikun Sun, Xiaolong Ren, Zhikuan Jia, Ting Wei, Peng Zhang
Summary: It is crucial to maintain soil fertility in film-mulched fields in northwest China for sustainable crop production. However, the effects of different biochar application rates on soil organic carbon contents and crop yields remain unclear. The findings of this study can guide the selection of appropriate biochar application rates for film-mulched farmland management in semiarid areas.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
Fayong Li, Desheng Wang, Yongjun You, Guoyu Li, Kamel Mohamed Eltohamy, Sangar Khan, Luqman Riaz
Summary: Mining operations in alpine mountain locations contribute to soil erosion and nutrient loss, but limited research has been conducted on reducing these impacts in freeze-thaw (FT) climates. This study investigated the effects of biochar application on soil erosion in the restored soil of an alpine mining region under FT circumstances. The results showed that biochar significantly reduced runoff, soil loss, and the loss of ammonia nitrogen (AN) and nitrate nitrogen (NN). However, biochar increased the runoff concentration of NN and decreased the total loss of AN and NN. The study also found that biochar addition increased residual AN, NN, and dissolved phosphorus (DP) concentrations in the soil. Overall, this research highlights the important role of biochar in the recovery of low-nutrient eroded soils in alpine mining areas.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Forestry
Weixia Wang, Joachim Ingwersen, Guang Yang, Zhenxi Wang, Aliya Alimu
Summary: Farmland conversion to orchard or agroforestry in southern Xinjiang, China, affects soil organic carbon and its activity. The results indicate that orchards and agroforestry systems are effective in increasing soil organic carbon content and activity.
Article
Agronomy
Jiaxin Sun, Yanli Yang, Peng Qi, Guangxin Zhang, Yao Wu
Summary: The optimal allocation of agricultural water and land resources is crucial for farmers' economic benefits, carbon sequestration, and water resource conservation. This study developed a novel water-carbon-economy coupling model and applied it to a real farm, demonstrating its effectiveness in achieving the optimal allocation of water and land resources. The model balances economic, environmental, and social benefits.
AGRICULTURAL WATER MANAGEMENT
(2024)