TAILIEUCHUNG - Sustainable Natural Resources Management Part 5

Tham khảo tài liệu 'sustainable natural resources management part 5', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Upstream Landscape Dynamics of US National Parks with Implications for Water Quality and Watershed Management 45 Fig. 10. Percentage of non-conservation private land in focal park upstream watersheds. 4. Conclusion We demonstrate a GIS framework for quantifying broad-scale landscape dynamics of park upstream watersheds and interpreting those analyses in the context of park water resources and watershed management potential. The framework is valuable for assessing NPS-wide opportunities and challenges associated with preserving water resources across an entire network of management units. Because it is founded on publically available data and methods which were chosen based on mechanistic relationships between landscape-scale factors known to affect protected areas Hansen DeFries 2007 and water resources Allan 2004 the framework may be readily applied to other systems of protected areas in the US and also to protected areas in other parts of the world with comparable landscape and water resource data. When applied to 151 focal parks in the contiguous US we demonstrate how 1 major anthropogenic stressors upstream from parks vary geographically both in terms of magnitudes and critical ecological thresholds . N deposition 2 water chemistry and impairment observations from most parks are within a good range reflecting the overall landscape context of parks 3 certain non-headwater parks are surprisingly unchallenged by upstream stressors that affect water quality and 4 parks vary dramatically in terms of the public and private partnership opportunities for coordinating watershed management. While these findings do not provide park-specific recommendations for managing water resources they are foundational to helping us better understand park watersheds and water quality in a comparative NPS-wide context which in turn may inform interpretations of site-level analyses at policy-relevant scales. 46 Sustainable Natural Resources Management 5. Acknowledgment We thank the .

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