These showed that human activities were the main factor threatening the survival of plants, and preserving forests were the effective approach to save the rare and endangered plants in the valley.
表明人类干扰是长江流域植物受威胁的主要原因，保护森林成为保护长江流域稀有濒危植物的主要途径。
These showed that human activities were the main factor threatening the survival of plants, and preserving forests were the effective approach to save the rare and endangered plants in the valley.
表明人类干扰是长江流域植物受威胁的主要原因，保护森林成为保护长江流域稀有濒危植物的主要途径。
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