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<p>Watersheds are highly complex aquatic systems crucial to human and ecological functions. Land cover impacts watersheds, and assessing the landscape structure and configuration is essential for effective management and planning, mainly when using indicators of anthropogenic disturbances such as distance to nature (D<sub>2</sub>N). This study aimed to assess the temporal change in land cover and anthropogenic influence in the Piracicaba Capivari Jundiaí Watershed (WPCJ) and the Sorocaba Médio Tietê Watershed (WSMT) in southeastern Brazil from 2010 to 2020, providing valuable information for decision-making. In both watersheds, agricultural activities predominated, covering more than 60% of the area, with forestry being dominant in 2010 and sugarcane in 2020. However, forest areas have increased in both study regions. The D<sub>2</sub>N analysis indicated a predominance of urbanized or intensively cultivated landscapes (&gt; 60%). There was an improvement in 2020 compared to 2010, attributed to increased natural areas. Regarding the temporal change in D<sub>2</sub>N, more areas transitioned toward artificial rather than natural states in both WPCJ and WSMT, although a considerable portion remained unchanged (&gt; 75%). This analysis is one of the few that applies D<sub>2</sub>N to watershed assessment. We emphasize the need for continued planning and conservation efforts in the WPCJ and WSMT and the potential for using this approach to assess anthropogenic influence in other watersheds.</p>

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Temporal change of land cover and distance to nature (D2N) to diagnose the anthropogenic influence on two watersheds in the southeastern region of Brazil

  • 期刊论文

  • 发表日期：

    2025年2月4日

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  • Fabio Leandro da Silva,
  • Ângela Terumi Fushita,
  • Marcela Bianchessi da Cunha-Santino,
  • Irineu Bianchini Jr.

摘要

Watersheds are highly complex aquatic systems crucial to human and ecological functions. Land cover impacts watersheds, and assessing the landscape structure and configuration is essential for effective management and planning, mainly when using indicators of anthropogenic disturbances such as distance to nature (D2N). This study aimed to assess the temporal change in land cover and anthropogenic influence in the Piracicaba Capivari Jundiaí Watershed (WPCJ) and the Sorocaba Médio Tietê Watershed (WSMT) in southeastern Brazil from 2010 to 2020, providing valuable information for decision-making. In both watersheds, agricultural activities predominated, covering more than 60% of the area, with forestry being dominant in 2010 and sugarcane in 2020. However, forest areas have increased in both study regions. The D2N analysis indicated a predominance of urbanized or intensively cultivated landscapes (> 60%). There was an improvement in 2020 compared to 2010, attributed to increased natural areas. Regarding the temporal change in D2N, more areas transitioned toward artificial rather than natural states in both WPCJ and WSMT, although a considerable portion remained unchanged (> 75%). This analysis is one of the few that applies D2N to watershed assessment. We emphasize the need for continued planning and conservation efforts in the WPCJ and WSMT and the potential for using this approach to assess anthropogenic influence in other watersheds.