祁游 的英文怎麼說
中文拼音 [qíyóu]
祁游
英文
qi you-
It is obvious that semi - quantitative was a scientific and practical method in water quality bio - assessment for macro - invertebrate assemblage sampling. ii the calculation of the tolerance value of benthic macro - invertebrate taxa 1. ninety - two samples were obtained from mountain streams in jixi, ningguo, xouning, qimeng and susong counties, anhui province, and plain waterbodies in qinghuaihe river and small water bodies in zijingshan, nanjing city, jiangsu province from 1998 - 2002
從1998年至2002 ，在位於安徽績溪縣、休寧縣境內的新安江水繫上游支流、寧國縣的青陽河、九華山九華河上游、祁門縣境內的閶江水系和大北河水系以及宿松縣趾風河，南京秦淮河流域和紫金山地區小水體設點採集大型底棲無脊椎動物樣本，共獲92個樣本。Three case study areas have been chosen in the paper, i. e. watershed forest resources of muchuan county of sichuan province, qilianshan and miyun county, which are the representative of the middle of yangtze river, the north of china and northwest of china respectively
研究中選取了三個案例點，即分別代表長江上游、西北、華北地區的四川省樂山市沐川縣的水源涵養林區、祁連山水源涵養林區、密雲縣水源涵養林區。The others showed partly decreased, but the degradation of vegetation were obviously in lower reaches of tarim and cherchen river ; in the mountain area of southern xingjian, the forest area were increased, and the others decreased ; in northern xingjian, both the mountain and the plain area increased. they showed the decrease of desert and the increase of oasis ; the change of vegetation cover in the hexi corridor - alax desert were not obviously ; but in chai - damu basin, the area of desert and low cover grassland increased, the others vegetation decreased, especially in the high cover grassland. that showed the great degradation of ecosystem, and the most of degradation was shown in the north hillside of the arjin mountain and qi - lian mountain
而從各個分區來看，情況不盡相同:南疆地區平原區綠洲面積擴大，荒漠面積基本不變，其他類植被面積不同程度縮小，而在塔里木河下游、車爾臣河下游植被退化;南疆山地森林面積略有增加，其他類植被面積略有縮小;北疆的平原區和山區的植被狀況均有改善，表現為荒漠面積縮小，綠洲面積增加;河西走廊一阿拉善地區總體變化不大;但是柴達木盆地的荒漠面積、低覆蓋度草地增加，其他類植被，尤其是甚高覆蓋度植被（草甸）的面積縮小，表明該地區的生態環境退化，而退化表現的主要地區在環柴達木盆地的阿爾金山和祁連山的北坡。
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