The ecological environment on the high cold wetland has specificity,sensitivity and vulnerability characteristics,so "ecologically fragile" is the main problem in construction of highway on the high cold wetland.
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Ecologically fragile period of grassland 草地生态脆弱期
ecologically fragile regions in Northwest 西北脆弱区
The northern arid land of China is economically backward and ecologically fragile.
我国北方干旱地区，是经济落后、生态环境脆弱区域。
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The red soil hilly region of Central Hunan Province is one of the most ecologically fragile regions in China.
湘中红壤丘陵区是中国非常脆弱的生态系统之一。
It might happen again, but new oil sources are found in increasingly costly places like deep water and perhaps the ecologically fragile Arctic.
FORBES: The Carbon Bubble
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