摘要 :
Zhangweinan sub-basin flows through four provinces and one municipality. There are groundwater, surface water, water from Yellow River and other water sources in this sub-basin. The water supply system and water resources deployme...
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Zhangweinan sub-basin flows through four provinces and one municipality. There are groundwater, surface water, water from Yellow River and other water sources in this sub-basin. The water supply system and water resources deployment management are complex and water pollution disputes often appear. The implementation of integrated management of water resources and water environment is of great significance in North China region where is short of water resources and with obvious water pollution contradiction.
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摘要 :
Soil Moisture and Vegetation Growth are the most important and direct index in drought monitoring, and the spectrum interpretation of vegetation and soil are serious factors in the judgment of drought degree. To find a more real-t...
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Soil Moisture and Vegetation Growth are the most important and direct index in drought monitoring, and the spectrum interpretation of vegetation and soil are serious factors in the judgment of drought degree. To find a more real-time monitoring indexof cropland soil moisture by remote sensing, a Cropland Soil Moisture Index (CSMI) was established in this paper based on the effective reflections of Normalized Difference Vegetation Index (NDVI) on deeper soil moisture and well expressions of Surface Water Content Index (SWCI) on surface soil moisture. By validation with different time-series MODIS data, the Cropland Soil Moisture Index (CSMI) not only overcome the limitation of hysteretic nature and saturated quickly of Normalized Difference Vegetation Index (NDVI), but also take the advantage of the Surface Water Content Index (SWCI) which effectively reduce the atmosphere disturbance and retrieval surface soil water content better. The index passed the significant F-tests with a = 0. 01, and is atrue real-time drought monitoring index.
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摘要 :
Soil Moisture and Vegetation Growth are the most important and direct index in drought monitoring, and the spectrum interpretation of vegetation and soil are serious factors in the judgment of drought degree. To find a more real-t...
展开
Soil Moisture and Vegetation Growth are the most important and direct index in drought monitoring, and the spectrum interpretation of vegetation and soil are serious factors in the judgment of drought degree. To find a more real-time monitoring index of cropland soil moisture by remote sensing, a Cropland Soil Moisture Index (CSMI) was established in this paper based on the effective reflections of Normalized Difference Vegetation Index (NDVI) on deeper soil moisture and well expressions of Surface Water Content Index (SWCI) on surface soil moisture. By validation with different time-series MODIS data, the Cropland Soil Moisture Index (CSMI) not only overcome the limitation of hysteretic nature and saturated quickly of Normalized Difference Vegetation Index (NDVI), but also take the advantage of the Surface Water Content Index (SWCI) which effectively reduce the atmosphere disturbance and retrieval surface soil water content better. The index passed the significant F-tests with a = 0. 01, and is a true real-time drought monitoring index.
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摘要 :
Soil Moisture and Vegetation Growth are the most important and direct index in drought monitoring, and the spectrum interpretation of vegetation and soil are serious factors in the judgment of drought degree. To find a more real-t...
展开
Soil Moisture and Vegetation Growth are the most important and direct index in drought monitoring, and the spectrum interpretation of vegetation and soil are serious factors in the judgment of drought degree. To find a more real-time monitoring index of cropland soil moisture by remote sensing, a Cropland Soil Moisture Index (CSMI) was established in this paper based on the effective reflections of Normalized Difference Vegetation Index (NDVI) on deeper soil moisture and well expressions of Surface Water Content Index (SWCI) on surface soil moisture. By validation with different time-series MODIS data, the Cropland Soil Moisture Index (CSMI) not only overcome the limitation of hysteretic nature and saturated quickly of Normalized Difference Vegetation Index (NDVI), but also take the advantage of the Surface Water Content Index (SWCI) which effectively reduce the atmosphere disturbance and retrieval surface soil water content better. The index passed the significant F-tests with α = 0. 01, and is a true real-time drought monitoring index.
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摘要 :
Zhangweinan sub-basin flows through four provinces and one municipality. There are groundwater, surface water, water from Yellow River and other water sources in this sub-basin. The water supply system and water resources deployme...
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Zhangweinan sub-basin flows through four provinces and one municipality. There are groundwater, surface water, water from Yellow River and other water sources in this sub-basin. The water supply system and water resources deployment management are complex and water pollution disputes often appear. The implementation of integrated management of water resources and water environment is of great significance in North China region where is short of water resources and with obvious water pollution contradiction.
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摘要 :
Surface water and groundwater (SW-GW) are undivided components of the hydrologic system. Development or contamination of the former commonly affects the water quality of the latter. Understanding the SW-GW interactions is critical...
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Surface water and groundwater (SW-GW) are undivided components of the hydrologic system. Development or contamination of the former commonly affects the water quality of the latter. Understanding the SW-GW interactions is critical to evaluating the structure of river eco-system, river restoration and riparian management. The authors analyzed such interactions in a reach of Weihe river using hydrochemical analysis method. The results indicated that the polluted river had already contaminated shallow groundwater, while due to natural attenuation within the SW-GW seepage zone,contamination of groundwater was limited to a certain range.
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摘要 :
The paper mainly introduces a new apparatus (CHES-FY) to measure fabric surface friction. Compacted with the KES-FB system, the CHES-FY system has its own superiority. Through designing orthogonal tests, corresponding properties o...
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The paper mainly introduces a new apparatus (CHES-FY) to measure fabric surface friction. Compacted with the KES-FB system, the CHES-FY system has its own superiority. Through designing orthogonal tests, corresponding properties of 16 groups fabrics were measured by CHES-FY system. Based on the correlation analysis between KES-FB system with CHES-FY system, it indicates that the two systems have high correlations. Thereafter, regression equation that includes four parameters through multiple linear regression were achieved. Itreports that CHES-FY system is feasible and accurate in measuring fabric surface friction performance.
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摘要 :
The paper mainly introduces a new apparatus (CHES-FY) to measure fabric surface friction. Compacted with the KES-FB system, the CHES-FY system has its own superiority. Through designing orthogonal tests, corresponding properties o...
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The paper mainly introduces a new apparatus (CHES-FY) to measure fabric surface friction. Compacted with the KES-FB system, the CHES-FY system has its own superiority. Through designing orthogonal tests, corresponding properties of 16 groups fabrics were measured by CHES-FY system. Based on the correlation analysis between KES-FB system with CHES-FY system, it indicates that the two systems have high correlations. Thereafter, regression equation that includes four parameters through multiple linear regression were achieved. Itreports that CHES-FY system is feasible and accurate in measuring fabric surface friction performance.
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摘要 :
The paper mainly introduces a new apparatus (CHES-FY)to measure fabric surface friction.Compacted with the KES-FB system, the CHES-FY system has its own superiority. Through designing orthogonal tests, corresponding properties of ...
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The paper mainly introduces a new apparatus (CHES-FY)to measure fabric surface friction.Compacted with the KES-FB system, the CHES-FY system has its own superiority. Through designing orthogonal tests, corresponding properties of 16 groups fabrics weremeasured by CHES-FY system. Based on thecorrelation analysis between KES-FB system with CHES-FY system, it indicates that the two systems have high correlations. Thereafter,regression equationthat includes four parameters through multiple linear regression were achieved. Itreports that CFIES-FY system is feasible and accurate in measuring fabric surface friction performance.
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摘要 :
Zhangweinan canal is one of important water sources of Haihe river basin. Water pollution is serious in Zhangweinan Canal and with history about 30 years,Based on water monitoring and investigation of zooplankton and phytoplankton...
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Zhangweinan canal is one of important water sources of Haihe river basin. Water pollution is serious in Zhangweinan Canal and with history about 30 years,Based on water monitoring and investigation of zooplankton and phytoplankton, find that Long-term and severe water pollution cause serious ecologic deterioration in the river, zooplankton, phytoplankton and zoo benthos have changed tremendously. We point out counter-measures and advice for water protection.
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