Article
Environmental Sciences
Wilk Sampaio de Almeida, Steffen Seitz, Luiz Fernando Coutinho de Oliveira, Daniel Fonseca de Carvalho
Summary: Different rainfall patterns have varying impacts on soil erosion, with high intensity and low duration rainfall leading to the highest runoff and sediment yield. The study results can contribute to developing new perspectives in designing water erosion experiments with simulated rain, considering the duration, intensity, and their association.
INTERNATIONAL SOIL AND WATER CONSERVATION RESEARCH
(2021)
Article
Soil Science
Dehong Hu, Wenjing Lan, Min Luo, Tianning Fan, Xin Chen, Ji Tan, Shihua Li, Pingping Guo, Jiafang Huang
Summary: Rising sea levels increase the risk of flooding in tidal wetlands, which can lead to increases in soil iron-bound organic carbon (Fe-OC) content. However, root activities of tidal wetland plants can attenuate this accumulation. In this study, increased flooding promoted root oxygen loss, leading to increased iron concentrations and rhizosphere iron ratios. This facilitated the accumulation of Fe-OC and reduced the labile organic carbon pool. Therefore, understanding the effects of future sea-level rise is important for tidal wetland ecosystems.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Geosciences, Multidisciplinary
Yarong Sun, Chao Liu, Min Zhao, Le Liu, Siqi Liang, Yajuan Wang, Yunming Chen
Summary: Extreme rainfall events can significantly impact soil carbon release, leading to increased CO2 emissions from deep soil and affecting regional carbon emissions.
Article
Multidisciplinary Sciences
Mercy K. Rugendo, Bernard M. Gichimu, Jayne N. Mugwe, Monicah Mucheru-Muna, Daniel N. Mugendi
Summary: Soil erosion is a challenge for the environment and sustainable use of natural resources, especially in agriculture. This study aimed to assess the impact of different soil organic carbon (SOC) levels on runoff and soil erosion under varying rainfall intensities. Experiments were conducted in farmers' fields with low, moderate, and adequate SOC levels in Nitisols and Ferralsols. Rainfall simulations were conducted to measure runoff and sediment losses. The results showed that Ferralsols had significantly higher runoff and sediment losses compared to Nitisols. Adequate SOC levels helped reduce erosion in both soil types. Runoff and sediment losses were positively correlated with rainfall intensity and inversely correlated with SOC levels. The study recommends incorporating organic matter to reduce soil erosion in both soil types.
Article
Environmental Sciences
Zhaoqi Wang, Yuanhao Lin, Lang Cai, Guiling Wu, Kai Zheng, Xiang Liu, Xiaotao Huang
Summary: Soil organic carbon (SOC) is crucial for terrestrial carbon cycle and global climate change. Microbial models coupled with carbon cycle models can improve SOC projections. However, it is unclear if microbial models are superior to other carbon cycle models and the extent of simulation uncertainties of SOC. In this study, we compared the spatial patterns of global SOC simulated by the MIMICS and DCC models with CMIP6 MME and observations to determine the uncertainties of SOC. We found that none of the models satisfactorily simulated SOC, especially in the high latitudes of the Northern Hemisphere, indicating a need for improvement in SOC simulation in this region.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Environmental Sciences
J. L. De Paepe, S. M. Aradvari Horvat, R. alvarez
Summary: This study aimed to analyze the changes in energy inputs, outputs, and energy indices along the rainfall gradient in the Pampas over the past four decades. The researchers also compared the current agrochemical and fertilizer use in Argentina with other major grain producing regions with large no-till surfaces. Furthermore, the study examined how energy fluxes varied with changes in soil organic carbon over the same time period. The findings showed that energy inputs increased over the four decades, while energy outputs and energy efficiencies improved. Additionally, the inclusion of soil organic carbon losses in energy quantifications provided a more comprehensive understanding of the energy fluxes in agricultural systems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Agronomy
Michael Hofbauer, David Kincl, Jan Vopravil, David Kabelka, Petr Vrablik
Summary: This study analysed data from 82 rainfall simulations and found that SOC mitigated soil loss in locations with <14% slope inclination. However, in locations with >14% slope inclination, soil loss was driven by preferential erosion of fine-grained particles. The study also revealed that low soil loss was usually associated with high SOC enrichment, indicating that preferential erosion of SOC mainly occurred in soils with low erosion susceptibility. Therefore, soil conservation measures are important in all soil types to prevent erosion of SOC and maintain soil quality.
Article
Soil Science
Yumei Peng, Huasen Xu, Zi Wang, Long Li, Jianying Shang, Baoguo Li, Xiang Wang
Summary: Drought has significant effects on soil physicochemical properties and thereby crop productivity. Intercropping is a traditional agricultural practice with a good ecological effect and can improve soil structure. However, the effects of intercropping on soil aggregate distribution and associated organic carbon (OC) and nitrogen (N) compared with monoculture under drought remains unclear.
SOIL USE AND MANAGEMENT
(2023)
Article
Biochemistry & Molecular Biology
Darda Efendi, Rahmat Budiarto, Roedhy Poerwanto, Edi Santosa, Andria Agusta
Summary: This study analyzed the impact of growing location on the yield and composition of kaffir lime leaves essential oils. The results showed that essential oil yield was positively correlated with rainfall, soil organic carbon, soil pH, nitrogen, phosphorus, and magnesium levels. Additionally, the major component citronellal was significantly affected by the growing location and correlated with soil pH and leaf mineral content.
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
Hongwei Xu, Qing Qu, Yanhua Chen, Guobin Liu, Sha Xue
Summary: The study showed that after cropland abandonment, there are significant differences in soil enzyme activity, SOC stability, and driving factors in different vegetation zones. In steppe and forest-steppe zones, soil enzyme activity increased while SOC stability decreased with recovery time; whereas in the forest zone, both parameters remained relatively stable. The changes in soil enzyme activity and SOC stability were closely related to vegetation diversity, coverage, and soil nutrient levels in different recovery sites.
Article
Geosciences, Multidisciplinary
Hongfen Teng, Songchao Chen, Zhongkui Luo, Zhou Shi, Yin Zhou, Dan Wan, Huaiying Yao
Summary: This study investigated the spatial distribution of lateral SOC loss and its drivers on the Tibetan Plateau. The results showed that most of the SOC loss occurred in grasslands and forests, and soil properties, terrain attributes, climate, and vegetation had varying degrees of influence on SOC loss. Path analysis identified the interconnections between soil, terrain, climate, and vegetation in determining lateral SOC loss.
Article
Biodiversity Conservation
Fang Haiyan
Summary: The study analyzed the impacts of rainfall characteristics, slope, and soil conservation measures on soil, SOC, and TN losses in black soils of Northeastern China to help implement a rational soil loss control strategy. Studies found significant differences in soil, SOC, and TN losses depending on conservation measures, slope, and rainfall characteristics, emphasizing the importance of implementing rational soil conservation measures in the region.
ECOLOGICAL INDICATORS
(2021)
Article
Environmental Sciences
Katarzyna Sawicka, Joanna M. Clark, Elena Vanguelova, Don T. Monteith, Andrew J. Wade
Summary: This study found that acid deposition, sea-salt deposition, and soil sensitivity to acidification are the main factors influencing spatial variation in DOC concentrations in soil water. The research suggests that the type of vegetation cover and soil chemistry properties play a crucial role in the sensitivity of DOC release from soil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Jianxiang Yin, Ling Zhao, Xiaoyun Xu, Deping Li, Hao Qiu, Xinde Cao
Summary: This study assessed the long-term carbon sequestration potential of biochar by integrating complex physical and biochemical processes. The results showed that biochar could effectively retain carbon and enhance plant growth, but it also limited the release of endogenous nutrients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
