One of the World’s great environmental problems - Water The water problem is today one of the greatest problems the world faces. The UN calculates that if the present development continues the 2/3 of the world population will live with serious water scarcity or nearly without water by the year 2025. The UN calculates that one should have 100 litres of water pr day to manage. This is for everything - home consumption‚ agriculture‚ industry‚ etc. Many people today have less than 50 litres‚ and in
Premium Water Irrigation Waterborne diseases
Soil erosion and management on the Loess Plateau 作者： 作者单位： 刊名： 英文刊名： 年，卷(期)： 被引用次数： CAI Qiang-guo Institute of Geographic Sciences and Natural Resources Research‚ CAS‚ 地理学报(英文版) JOURNAL OF GEOGRAPHICAL SCIENCES 2001‚11(1) 6次 参考文献(23条) 1.Chen Yongzong;Jing Ke;Cai Qiangguo Modern Erosion and Management 1988 2.Lal R Soil erosion by wind and water: problems and proposals 1988 3.Shi Nianhai Loess Plateau and evolution of its agro-forest distribution area 1981 4.Zhu Kezhen Preliminary study of climate
Premium Erosion Soil
Narrabeen is a beachside suburb located on Sydney’s northern beaches with a population of just over 6000 people. It is known for its long stretch of beach‚ over 3 kilometres‚ with four beaches on this stretch: North Narrabeen‚ Narrabeen‚ South Narrabeen and Collaroy. The Narrabeen coastal environment consists of these beaches as well as the lagoon located at the north end of the beach. Surrounding areas are on a floodplain‚ meaning that high sea levels‚ large amounts of rain and runoff from nearby
Premium Beach Coastal geography Erosion
hill it is called a landslide. Landslides are caused by rain and melting snow that goes into cracks in the earth on top of a mountain or hill. Then the earth is weakened because the water makes the soil loose. Landslides can also be caused by erosion. Erosion is when things like a river or mining slowly eats away the bottom of a hill or slope. The top of the hill is no longer supported by the bottom. The loose soil can be set off by things like mine explosions‚ thunder‚ traffic noise‚ earthquakes
Premium Geomorphology Dam Water
from braided stream area 2. Stabilize soils in fire-damaged areas. -clearing dead/ burn brush and trees‚ thinning forest to prevent future fires as big as this one. -Control erosion of small feeder streams -Remove debris 3. Cattle access control -fencing to prevent cattle access to stream -fix bank erosion with brush mattresses 4. Hillside slump stabilization. -brush mattresses In this Plumas Trout Creek Restoration the primary objective is to reestablish the hydrology
Premium Sediment Bald Eagle Forest
Environmental Issues Hydrosphere http://www.ec.gc.ca/water/e_main.html : This website talks about water and its preservation. It tells about the importance of water in our daily life. The purpose of this website is to make Canadians aware about the fresh water available in Canada and to guide them to preserve it. This website tells almost everything about water present in Canada such as nature of water‚ water policy legislation‚ the water management‚ and the water culture. This website tells us
Premium Global warming Air pollution Erosion
state‚ the mineral salts may be washed away. 6. Burning: This kills soil organisms‚ destroys the texture and structure of the soil and finally reduces plant nutrients. 7. Erosion: This helps in washing away of soil nutrients from one place to another‚ and may occur under the influence of heavy rain or wind storm. Erosion Soil is a natural body consisting of layers of primarily mineral constituents‚ which differ from the parent materials in their texture‚ structure‚ consistence‚ color‚ chemical
Premium Agriculture Soil Erosion
river’s long profile (15 MARKS) Upper - Erosion - Vertical - Weak Erosion but strong Velocity In the upper stage of the river’s long profile‚ there is mainly vertical erosion and by abrasion. Erosion occurs when there are high-energy conditions and discharge are high after heavy rain or ice melt. The rough channel from the high velocity causes turbulence and the large‚ angular bedload is dragged along the river bed‚ causing intense downwards (vertical) erosion. Mainly large particles such as boulders
Premium River Erosion Sediment
“Has there been shoreline accretion or erosion within the last year?” We studied and focused on the effect of human development on various specific locations on the Galveston beach. (Figure A below) My hypothesis was that there was severe accretion because of three reasons. Increased ship and harbor activity‚ lack of storms‚ and increasing pollution due to various cities along the coast. But how does human interference actually effect the natural erosion and accretion patterns over time? Understanding
Premium Erosion Storm surge Coast
North-West China has more than 60% of China’s poor people living there. The environment and location there is suffering from many problems such as serious soil erosions and desertification of the land. One example is the Loess Plateau in the North of China which is a barren land filled with ravines and gullies everywhere. Therefore‚ I agree to a certain extent that the North-West China has been poor due to its location. As the region is nearer towards the West‚ the North-West region is arid and
Premium Erosion Poverty