Owing to the fragile eco-environment, terrain fragmentation, and serious soil erosion, the karst area in Southwest China is one of the distinct poor regions.
我国西南喀斯特地区山高坡陡,地形破碎,生境脆弱,水土流失严重,是我国典型的极贫困代表区域之一。
The eco-landscape regions in hot arid valleys, which are distributed in southern China according to azonality law, are the prelude of desertification.
按非地带性规律分布的干热河谷景观生态区是中国南方局部区域荒漠化过程的前奏。
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