As demands on limited water resources intensify, concerns are being raised about water resources carrying capacity（WRCC）, which is defined as the maximum sustainable socioeconomic scale that can be supported by avai...As demands on limited water resources intensify, concerns are being raised about water resources carrying capacity（WRCC）, which is defined as the maximum sustainable socioeconomic scale that can be supported by available water resources and while maintaining defined environmental conditions. This paper proposes a distributed quantitative model for WRCC, based on the principles of optimization, and considering hydro-economic interaction, water supply, water quality, and socioeconomic development constraints. With the model, the WRCCs of 60 subregions in Henan Province were determined for different development periods. The results showed that the water resources carrying level of Henan Province was suitably loaded in 2010, but that the province would be mildly overloaded in 2030 with respect to the socioeconomic development planning goals. The restricting factors for WRCC included the available water resources, the increasing rate of GDP, the urbanization ratio, the irrigation water utilization coefficient, the industrial water recycling rate, and the wastewater reuse rate, of which the available water resources was the most crucial factor. Because these factors varied temporally and spatially, the trends in predicted WRCC were inconsistent across different subregions and periods.展开更多
In September 2016, the Department of Land and Resources of ttenan Province announced that the First Geological Exploration Institute of Henan Bureau of Geo- Exploration ＆ Mineral Development had recently discovered a...In September 2016, the Department of Land and Resources of ttenan Province announced that the First Geological Exploration Institute of Henan Bureau of Geo- Exploration ＆ Mineral Development had recently discovered a new104.96-ton gold resource, with 122.034 tons of associated silver and also abundant natural soda and lead-zinc mineral resources in the deep and peripheral areas of the Laowan gold deposit in Tongbai County.展开更多
文摘As demands on limited water resources intensify, concerns are being raised about water resources carrying capacity（WRCC）, which is defined as the maximum sustainable socioeconomic scale that can be supported by available water resources and while maintaining defined environmental conditions. This paper proposes a distributed quantitative model for WRCC, based on the principles of optimization, and considering hydro-economic interaction, water supply, water quality, and socioeconomic development constraints. With the model, the WRCCs of 60 subregions in Henan Province were determined for different development periods. The results showed that the water resources carrying level of Henan Province was suitably loaded in 2010, but that the province would be mildly overloaded in 2030 with respect to the socioeconomic development planning goals. The restricting factors for WRCC included the available water resources, the increasing rate of GDP, the urbanization ratio, the irrigation water utilization coefficient, the industrial water recycling rate, and the wastewater reuse rate, of which the available water resources was the most crucial factor. Because these factors varied temporally and spatially, the trends in predicted WRCC were inconsistent across different subregions and periods.
文摘In September 2016, the Department of Land and Resources of ttenan Province announced that the First Geological Exploration Institute of Henan Bureau of Geo- Exploration ＆ Mineral Development had recently discovered a new104.96-ton gold resource, with 122.034 tons of associated silver and also abundant natural soda and lead-zinc mineral resources in the deep and peripheral areas of the Laowan gold deposit in Tongbai County.
