An Image fusion method based on segmentation region is proposed in this paper. First, the source images are decomposed by wavelet to get the approximate and detailed sub-images, and the segmentation by watershed method for these sub-images are used to get the regions of each level, these regions are used to guide fusion process. The activity level and match degree measure of the wavelet coeffic...

The Tingjiang Watershed is a typical mountainous area with red soil in the south of China. Due to high rainfall intensity, significant cultivated land expansion, and accelerated urbanization, ecological problems such as erosion are prominent study area. Based on use, precipitation, digital elevation model (DEM), normalized difference vegetation Index (NDVI), types 2000, 2010, 2020, landscape pa...

It is widely known that land use/land cover (LULC) changes significantly alter watershed hydrology and sediment yields. The impact, especially on erosion sedimentation, likely to be exacerbated in regions dominated by high rainfall patterns such as monsoons. This study analyzed the hydrological responses of LULC terms streamflow (SF) yield (SY) a monsoon-dominated tropical watershed, Periyar Ri...

The destruction of forests in watershed areas has now become a concern many parties, resulting floods, landslides, and droughts that continue to increase. Watershed damage is accelerated by increased utilization natural resources due population growth economic development, conflicts interest, lack integration between sectors the upstream-middle-downstream areas. For this reason, it necessary as...

Changes in land use made to meet the needs of life line with population growth do not balance decreasing availability natural resources. The Tabunio watershed is a that included second priority be handled province South Kalimantan. Amparo Kecil sub-watershed one part watershed, which located upstream area. has large slope, vegetation form forest, rivers fast currents and prone erosion. This stu...

Turbidity regimes vary dramatically among small streams in north coastal California. In an analysis of turbidity data from 27 small streams in the region, turbidity at the 10-percent exceedence level ranged from 3 to 116 formazin nephelometric units (FNU) for the 2005 wet season, translating to 1.7 to 65 days above an oft-cited biological threshold of 25 FNU. Watersheds draining to the streams ...

the management of sedimentation problems in rivers and reservoirs depend greatly on the sediment yield from the catchment land surface. in this research the effects of biological measures and ranges enclose on suspended load in two sub-catchments of kakhk experimentalwatershed in gonabad has been studied. this catchment contains both control and experimental sub-catchments. these sub-catchments...

Estimation of surface run-off in karst watersheds has not been widely carried out and the estimation method is generally developed for non-karst watersheds. This study aims to analyze accuracy river discharge at outlet Karst Biringere Sub-watershed using modified Soil Conservation Service Curve Number (SCS-CN) analyzed impact land use change on Sub-watershed. Modification SCS-CN estimating dire...