Jianqiao Han
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View article: Microplastics influence organic carbon depletion in macroaggregates and soil structural stability in the Yanhe catchment
Microplastics influence organic carbon depletion in macroaggregates and soil structural stability in the Yanhe catchment Open
View article: Effects of Extreme Moisture Events on Greenhouse Gas Emissions and Soil Ecological Functional Stability in Calcaric Cambisols
Effects of Extreme Moisture Events on Greenhouse Gas Emissions and Soil Ecological Functional Stability in Calcaric Cambisols Open
Global warming is expected to increase the frequency and intensity of extreme precipitation, yet its effects on soil greenhouse gas (GHG) emissions and functional stability remain uncertain. This study explored the impact of extreme soil m…
View article: Application of UAV multimodal data and deep learning for estimating soil salt content at the small catchment scale
Application of UAV multimodal data and deep learning for estimating soil salt content at the small catchment scale Open
View article: Quantifying the Impacts of Climate Change and Human Activities on Runoff Variability in the Upper Reaches of Hanjiang River Basin: Insights from Pls-Sem Analysis
Quantifying the Impacts of Climate Change and Human Activities on Runoff Variability in the Upper Reaches of Hanjiang River Basin: Insights from Pls-Sem Analysis Open
View article: Comparison of Oil Extraction and Density Extraction Method to Extract Microplastics for Typical Agricultural Soils in China
Comparison of Oil Extraction and Density Extraction Method to Extract Microplastics for Typical Agricultural Soils in China Open
Microplastic pollution in agricultural soil threatens soil quality and human health which has attracted extensive attention worldwide. However, there is no uniform standard for microplastic extraction methods and the identification of micr…
View article: Assessing the contributions of human activities to runoff and sediment transport change: A method for break point identification in double mass curves based on model fitting
Assessing the contributions of human activities to runoff and sediment transport change: A method for break point identification in double mass curves based on model fitting Open
Study region: The upper Yellow River basin, the Wuding River basin, and the Xinshui River basin in China. Study focus: The double mass curve (DMC) is a widely used tool for assessing the contributions of human activities to runoff and sedi…
View article: Assessing the risk of check dam failure due to heavy rainfall using machine learning on the Loess Plateau, China
Assessing the risk of check dam failure due to heavy rainfall using machine learning on the Loess Plateau, China Open
Check dams are widely used throughout the world to tackle soil and water loss. However, the frequency of extreme rainfall events has increased owing to global climate change and the main structure of check dam is gradually aging, which lea…
View article: Soil Carbon Management Index under Different Land Use Systems and Soil Types of Sanjiang Plain in Northeast China
Soil Carbon Management Index under Different Land Use Systems and Soil Types of Sanjiang Plain in Northeast China Open
Land-use systems (LUSs) and soil types (STs) are strongly related to factors that influence soil degradation and carbon (C) loss. However, the way in which land use and soil type affects the soil organic C (SOC) pools, and soil aggregation…
View article: The Global Importance of Increasing Design Rainstorms under Specific Return Periods in China
The Global Importance of Increasing Design Rainstorms under Specific Return Periods in China Open
Evaluating the correlation between changes in design rainstorms and extreme rainstorm events under climate change facilitates flood control and disaster reduction. Based on the daily rainfall data of 609 stations during 1958–2017, the Pear…
View article: Temporal and Spatial Change in Vegetation and Its Interaction with Climate Change in Argentina from 1982 to 2015
Temporal and Spatial Change in Vegetation and Its Interaction with Climate Change in Argentina from 1982 to 2015 Open
Studying vegetation change and its interaction with climate change is essential for regional ecological protection. Previous studies have demonstrated the impact of climate change on regional vegetation in South America; however, studies a…
View article: Quantifying the Effects of Climate Change and Revegetation on Erosion-Induced Lateral Soil Organic Carbon Loss on the Chinese Loess Plateau
Quantifying the Effects of Climate Change and Revegetation on Erosion-Induced Lateral Soil Organic Carbon Loss on the Chinese Loess Plateau Open
Erosion-induced soil organic carbon (SOC) loss substantially affects the redistribution of global organic carbon. The Chinese Loess Plateau, the most severely eroded region on Earth, has experienced notable soil erosion mitigation over the…
View article: Modeling the impacts of fully-filled check dams on flood processes using CAESAR-lisflood model in the Shejiagou catchment of the Loess Plateau, China
Modeling the impacts of fully-filled check dams on flood processes using CAESAR-lisflood model in the Shejiagou catchment of the Loess Plateau, China Open
Study region: The Shejiagou catchment on the Loess Plateau, China Study focus: This study used CAESAR-lisflood to simulate the impacts on flood processes of fully-filled check dams with different numbers, silt land areas and connection mod…
View article: Appropriate Methods of Microplastics Extraction for Typical Agricultural Soils in China
Appropriate Methods of Microplastics Extraction for Typical Agricultural Soils in China Open
View article: Responses of flood peaks to land use and landscape patterns under extreme rainstorms in small catchments - A case study of the rainstorm of Typhoon Lekima in Shandong, China
Responses of flood peaks to land use and landscape patterns under extreme rainstorms in small catchments - A case study of the rainstorm of Typhoon Lekima in Shandong, China Open
Investigations of the formation mechanisms of flood peaks in small catchments facilitate flood prediction and disaster prevention under extreme rainstorms. However, there have been few studies on the responses of flood peaks to land use la…
View article: Divergent impacts of droughts on vegetation phenology and productivity in the Yungui Plateau, southwest China
Divergent impacts of droughts on vegetation phenology and productivity in the Yungui Plateau, southwest China Open
View article: Individual Rainfall Change Based on Observed Hourly Precipitation Records on the Chinese Loess Plateau from 1983 to 2012
Individual Rainfall Change Based on Observed Hourly Precipitation Records on the Chinese Loess Plateau from 1983 to 2012 Open
The magnitude and spatiotemporal distribution of precipitation are the main drivers of hydrologic and agricultural processes in soil moisture, runoff generation, soil erosion, vegetation growth and agriculture activities on the Loess Plate…
View article: Conversion of Slope Cropland to TerraceInfluences Soil Organic Carbon and NitrogenStocks on the Chinese Loess Plateau
Conversion of Slope Cropland to TerraceInfluences Soil Organic Carbon and NitrogenStocks on the Chinese Loess Plateau Open
Soil is the largest pool of terrestrial organic carbon in the biosphere [1].Statistically, the soil carbon (C) pool is 3.3 times the size of the atmospheric pool and 4.5 times the size of the biotic pool.The global soil C pool of 2500 giga…
View article: How Adding Biochar Improves Loessal SoilFertility and Sunflower Yield on ConsolidationProject Land on the Chinese Loess Plateau
How Adding Biochar Improves Loessal SoilFertility and Sunflower Yield on ConsolidationProject Land on the Chinese Loess Plateau Open
Although a land consolidation project has increased arable land area in loess areas, the loessal soil has poor fertility and productivity.Soil degradation and the accompanying decline in crop yields are the main limiting factors for agricu…
View article: Numerical Simulation on the Influence of Bridge Construction on River Flood Control in a Bottleneck Reach
Numerical Simulation on the Influence of Bridge Construction on River Flood Control in a Bottleneck Reach Open
Bottleneck reach regions with narrow and deep cross sections prevent sediment transport and weaken flood control capacity. In addition, bridge constructions can exacerbate the risk of flooding in these areas. In this study, the Longhai Rai…
View article: Influence of Large Reservoir Operation on Water-Levels and Flows in Reaches below Dam: Case Study of the Three Gorges Reservoir
Influence of Large Reservoir Operation on Water-Levels and Flows in Reaches below Dam: Case Study of the Three Gorges Reservoir Open
The Three Gorges Project (TGP) is the world’s largest water conservation project. The post-construction low-flow water level at the same discharge below the dam has declined, but there remains disagreement over whether the flood level has …
View article: Numerical experiments on stagnation points influenced by the Three Gorges Dam in the Yangtze Estuary
Numerical experiments on stagnation points influenced by the Three Gorges Dam in the Yangtze Estuary Open
In order to study the changes of stagnation points in the Yangtze Estuary influenced by the Three Gorges Dam operation, 3-D hydrodynamic and sediment transport model ECOMSED was used to simulate the dynamic process of flow varying with the…
View article: Flood and low stage adjustment in the middle Yangtze River after impoundment of the Three Gorges Reservoir (TGR)
Flood and low stage adjustment in the middle Yangtze River after impoundment of the Three Gorges Reservoir (TGR) Open
流域大型水库蓄水后,坝下游河道调整过程中的洪、枯水位变化,对下游水安全、水生态和水资源利用影响甚大.利用1955-2012年长江中游各水文站水位、流量等资料,采用改进的时间序列分析方法,对三峡水库运行前后长江中游洪、枯水位变化特征进行了研究,结果表明:三峡水库蓄水前长江中游洪、枯水位变化的周期长度分别为9~14、11~15 a,在假设三峡水库运行后水位无趋势性变化的前提下,估算得到的水位变化周期长度基本在20 a以上,蓄水前的自然周期性已被打破,枯水位发生趋势性下降且无复归…
View article: Impact of the Three Gorges Dam on sediment deposition and erosion in the middle Yangtze River: a case study of the Shashi Reach
Impact of the Three Gorges Dam on sediment deposition and erosion in the middle Yangtze River: a case study of the Shashi Reach Open
Channel morphology in an alluvial river usually varies due to the altered flow and sediment regime from upstream damming. This paper reports an evaluation of the dynamical changes of sedimentation and erosion in the middle and lower reache…