drbubb Posted April 2, 2006 Report Share Posted April 2, 2006 The strange and appealing idea of Growing Green crops and green energy on Rooftops, is being pioneered in Nepal of all places: "Growing on Rooftops makes use of abundant, otherwise wasted space, thus overcoming the main barrier to widespread agriculture and greening in urban centers. Green roofs can increase the longevity of a building and reduce heating and (especially) cooling costs. In Kathmandu there is a culture of using rooftops for gardening. Roofs are often strong enough to bear the weight of lightweight hydroponics systems." 2/ Rooftop Gardening in Kathmandu In 2001 GEM conducted a project entitled Household Level Waste management (HLWM) by Using Effective Micro-organisms (EM) and Rooftop Vegetable Gardening in Kathmandu City in co-operation with the Community Welfare and Development Society and the Kathmandu Municipality Corporation. The project involved workshops and training related to composting and rooftop gardening techniques directed toward local women’s organisations and high school students, resulting in the establishment of new rooftop gardening clubs whose members are interested in developing higher-yield gardens on the city’s rooftops. 3/ Organic Hydroponics · Hydroponics is the growth of plants without soil, wherein nutrients are supplied in solution in the optimum concentrations for maximum growth, generally quadrupling the yields that can be produced in the same space using conventional methods. · Hydroponics also uses less than one tenth of the water used in conventional agriculture, because water is not absorbed by the soil, and can be continually reused. · Recent projects in developing countries have shown the possibility of building simplified hydroponics systems that use human labour instead of mechanical devices for watering and testing, leading to a significant reduction in construction costs. · It has also been shown that it is possible to use compost-derived nutrient solutions rather than commercially available chemical nutrient solutions. These systems result in reduced energy use, lower costs, and do not rely on a stable supply of electricity. Water Reuse The irrigation water will be collected primarily through grey-water recycling and rainwater collection. The former will help to reduce the amount of wastewater to be treated as well as reducing the draw on current water supply systems. Rainwater collection will provide an unpolluted source that can be stored and redistributed. Its collection will help reduce the storm water runoff pollution shock caused when high rainfall events over areas with largely impermeable surfaces such as pavement and building roofs. ...MORE: http://www.alternatives.ca/gemnepal/ Link to comment Share on other sites More sharing options...
This topic is now archived and is closed to further replies.