There were effects of human activities at seven lakes in different degree.

紫水鸡分布的湖泊均存在不同程度的人为活动干扰。

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The negative effects of human activities on environment have been scientifically proven.

人类活动对于环境影响的负面作用也逐渐被科学界所证实。

youdao

Soil and water loss results from the comprehensive effects of human activities and natural factors.

水土流失是人类活动与自然因素综合作用的结果。

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It includes striking examples, such as the melting glaciers of Kilimanjaro (the highest mountain in Africa) which have lost 80% of their surface area during the twentieth century due to the combined effects of climate change and human activities.

UNESCO: THEMES

Outside these core areas, and at lower altitudes, the culture and farming practices of mountain people can have profound effects on local ecology, making the effects of climate change difficult to distinguish from those directly due to human activities.

UNESCO: 83e