middle reaches 中文意思是什麼
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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? -
As a result, vulnerable ecological environment is showed with the ecological bearing capacity in middle reaches of hetian river. in the view of the features of landscape pattern in the middle reaches of hetian river, the landscape protection principles of development, harmonization and reality and ecological landscape construction principle including adapting nature, mutualism, adjusting ecosystem and meliorating function, local regulation and whole " harmonization are put forward
A ，指出區域內生態環境質量在提高，但依舊無法脫離荒漠生態體系，是一種極其脆弱的生態環境。針對和田河中游地區景觀生態的具體特點，提出了發展、協調、現實的景觀保護原則以及適應自然、共生互利、調整結構，改善功能、局部控制與整體協調的景觀生態建設原則，相應地制定出河流廊道建設、綠色植被建設以及綠洲建設的景觀生態建設途徑 -
The daling river is a river of much bedload. the average of the loss sand can reach 21434. 3 thousandston, and the ratio is 18. 08 kg / m3. to this day, the ratio of sandiness by measuring in the biggest broken surface is 172 kg / m3. the baishi reservoir lies in the city named beipiao which in the middle reaches of the daling river in liaoning province, the income of the reservoir from the trunk stream is 11457 thousandston, and from the branch of the river is 1160 thousandston
大凌河是個多沙河流，多年平均懸移質輸沙量可達2143 . 43萬噸，平均含沙量為18 . 08kg m ~ 3 ，實測最大斷面含沙量為172kg m ~ 3 ，白石水庫位於大凌河中游的遼寧省北票市，年入庫沙量，幹流為1145 . 7萬噸，支流?牛河為1160萬噸。 -
The forest cover will rise from 10. l percent to 27 percent in 30 years in the other three major control regions, namely soil erosion areas in the middle reaches of the yellow river, wind eroded areas on the loess plateau and areas along river sources in qinghai province
用30年左右的時間，使黃河中游水土流失區、黃土高原風沙區、青海江河源頭三個重點治理區森林覆蓋率由目前的10 1提高到27以上。 -
It decides the protective objectives for different ecological reserve area based on the study of channel wetlands and survey and analysis of top - grade species ( fishes ) of the yellow river : from the point of the basin, the main ecological protective objectives of the tipper stream are vegetation and forest for conservation of water supply ; soil and water conservation is the main in the middle reaches for vegetation protection and rehabilitation and ; the lower reaches takes types of wetlands protection and wetlands area maintenance as the main, protecting biodiversity and important birds resources
在黃河河道濕地研究和黃河水體內頂級物種（魚類）的調查分析基礎上，確定了黃河不同類型生態保護區的生態保護目標：從流域角度而言，黃河上游的主要生態保護目標是植被和水源涵養林；中游應以水土保持為主，主要是恢復和保護植被；下游以保護濕地類型和維持濕地面積為重點，保護生物多樣性和重要鳥類資源。 -
Groundwater resources evaluation and potential analyses supported by gis on middle reaches of heihe river basin hexi corridor
支持下的河西走廊黑河中游盆地地下水資源評價與潛力分析 -
Stressing the main points and implementation and quickening the steps of soil and water loss in upper and middle reaches of the yellow river
突出重點抓好落實加快黃河上中游地區水土流失防治步伐 -
The investigation report on rice cultivation archaeology in the middle reaches of the huai river
淮河中游地區稻作農業考古調查報告 -
The weather of the abnormal most precipitation and the persistent rain all does n ' t correspond well in the two area of jiangsu, while the weather of the abnormal little precipitation is corresponding with the persistent sun. during 1st. - tth. october, the precipitation distribution of south of jiangsu is in phase with the middle - low reaches of the yangtze river and guangxi, while in north of jiangsu it is in phase with the drainage of huai river and the up - middle reaches of the yangtze river
兩區異常多雨年份與連陰雨天氣對應關系都不是很好，但連晴天氣與異常少雨天氣有著較好的對應關系；十一期間蘇南地區降水與我國長江中下游地區和廣西地區降水呈同位相，而蘇北地區與長江以北上中游地區和江淮地區降水呈同位相。 -
It is originated from the grocers on the north side of mt. qomolangma. the middle reaches are about more than 1300 kilometers long and the drainage area is 240 thousand square kilometers
雅魯藏布江起源於喜馬拉雅山北麗的傑馬央宗冰川，其中游約長1300多公里，流域面積達24萬平方公里。 -
A study on shipping development in the middle reaches of yellow river
黃河中游航運發展問題研究 -
Review on sediment variation in middle reaches of the yellow river
黃河中游地區泥沙變化研究進展 -
Land - use impacts on biodiversity in the soft rock area of the middle reaches of the yellow river
黃河中游砒砂巖地區土地利用對生物多樣性的影響評價 -
Zhengzhou lies in the lower and middle reaches of yellow river, the mother river of china
鄭州位於中華民族的母親河黃河中下游的分界處 -
A simple introduction to forest fireproof of natural forest reserve on middle reaches of huanghe river valley in henan province
長江上遊人工林與天然林土壤結構質量及保水抗蝕性研究 -
The essag discussed and analysed the flood features of the middle reaches of yi rever and its causes. on the base of related analysis of the water level and the flood area, it set a linear and regressive model and predicted the flood degree tentatively
論述並分析了沂河中游洪澇災害的特點及其形成原因，在相關分析的基礎上，建立了線性回歸模型，並對受災程度作了初步預測 -
Linfen lies in the southwest of shanxi province, and the middle reaches of the yellowriver and by fenhe river, with taiyue mountains to the east, luliangt ot he west
臨汾市位於山西省西南部，黃河中游，汾水之濱，東倚太岳，西靠呂梁，中部是遼闊富饒的盆地。 -
Analysis on effect of water saving reconstruction of irrigation district in middle reaches of heihe river
黑河幹流中游灌區節水改造效果分析 -
Mountain flowing water name quarry jade and carve jade actor name, is it catch ore weather into avalanche originally to refer to, and carry the malachite for the river upper and middle reaches from the river
山流水山流水名稱由采玉和琢玉藝人命名，即指原生礦石經風化崩落，並由河水搬運至河流中上游的玉石。 -
From now on, regions with ecological importance on the upper - middle reaches of yangtze and yellow rivers shall be demarcated into ecological nature reserves composed of exclusively protected zones and buffer zones. and forest industries shall be shifted to forest management and tending
從現在起，將長江、黃河中上游生態環境地位重要地區劃為由禁伐區和緩沖區組成的生態保護區，森工企業轉向營林管護。
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