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。
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。
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。
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