river disasters 中文意思是什麼
river disasters
解釋
河流災害-
Abstract : this paper analyzes causal factors of flood in the middle reaches of changjiang river. due to neglection of environmental management, soil erosion in the upper and middle reaches of the changjiag river, lake sedimentation, large - scale reclamation of marshes, the flood regulation capacity of the lake was descended, and flood stage was risen and prolonged. consequently more and more river levees and lake dikes were reinforced almost every year to prevent the disasters, which made flood level go up and flood period last for more days. the frequency of flood and waterlogging disasters rose and their damage was enlarged. several proposals for flood prevention including agricultural modernization are put forward
文摘: 1998年長江大洪水后開始實施的「平垸行洪，退田還湖」的土地利用調整方案，從長遠來說應尋求農業安全且收入逐漸提高條件下的土地利用，長江中游地區應積極推進農業現代化，提高農業勞動生產率，轉移，減少分蓄洪區的人口，移民建鎮，對區內的土地要促進其規模經營，由優秀的有文化的農民經營，平時只有少量的直接從事農業生產的經營管理人員，農忙時則大量地使用季節性合同工或實現機械化，大洪水時退田還湖，減輕長江幹流大洪水的壓力，減少分洪與特大洪災時的損失，這樣還可促進避洪、冬季農業等的發展，也有利於長江中上游地區陡坡耕地的退耕還林，還可在糧食充足時進行休耕，在旱災、糧食緊張時擴大糧食生產? -
Based on an analysis of causes and basic characteristics of drought in north and south areas of china, it is pointed out that drought in north areas, such as the yellow river basin and the huaihe river basin, was characterized by the severe systematic demand - supply contradiction resulted from the shortage of water resources, and successive drought disasters intensified by hot and dry weather, and that drought in south areas was characterized by the occurrence or successive occurrence of dry years due to hot and dry weather and the seasonal water shortage induced by their geographic and climatic features and insufficient water supply capacity
摘要以區域乾旱特徵分析以及乾旱災害應對策略研究為目的，闡述我國南、北方兩種不同地域類型的區域乾旱成因和基本特徵，指出黃淮海區域的乾旱特徵主要表現在天然水資源短缺引發的系統性深度供需矛盾，以及晴熱少雨氣候加劇這種矛盾而產生的持續乾旱災害；南方地區的乾旱特徵主要表現在晴熱少雨氣候導致枯水年或連續枯水年出現，以及地理氣候特徵和供水工程容量不足等因素產生的年內季節性乾旱缺水。 -
An analysis of characteristics of flood disasters in weihe river valley
渭河流域洪水災害特徵分析 -
Analysis on the main factors resulting in flood disasters in the weihe river watershed and the control measures
渭河流域洪水災害關鍵因素分析及防治對策 -
Affected by the region ' s natural environment, river system characteristics, climatic conditions and its social economy, disasters always occurred in summers and concentrated in the center of the basin
受自然環境、水系特徵、氣候條件及社會經濟狀況等因素影響，災害發生的時間規律與地域分佈表現出夏季為高發期、平原中腹是集中地的特徵。 -
Special emergency projects to prevent recurrence of major river disasters will be carried out around the basin of the myoshoji and zenpukuji rivers
將實施特殊緊急工程防止妙正寺河以及善福寺河流域周邊再次發生水災。 -
There have been frequent geological disasters of landslides in the area of yangtze river three gorges, especially in the vicinity of lianziya hazardous rock mountain, where the constant deformation has been observed in the past several years, and the condition has become worse
長江三峽崩塌滑坡發育，崩、滑、流等地質災害頻繁，尤其是鏈子崖危巖體，近年來變形活動持續不斷，逐年又加劇發展勢頭，存在發生大規模崩塌滑坡的危險徵兆。
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