نتائج البحث

Development history and bibliography of the US Forest Service crown-condition indicator for forest health monitoring.

• Authors : Randolph, KaDonna¹

Subjects: *FORESTS & forestry; *RAINFALL; *AIR pollutionUNITED States

• Source: Environmental Monitoring & Assessment. Jun2013, Vol. 185 Issue 6, p4977-4993. 17p.

تفاصيل العنوان

Status and future of the forest health indicators program of the USA.

• Authors : Woodall, Christopher¹ ; Amacher, Michael C.²; Bechtold, William A.³

Subjects: *FOREST health; *FORESTS & forestry; *FOREST surveysUNITED States

• Source: Environmental Monitoring & Assessment. Jun2011, Vol. 177 Issue 1-4, p419-436. 18p.

تفاصيل العنوان

Developing a National Indicator of Soil Quality on U.S Forestlands: Methods and Initial Results.

• Authors : O'Neill, Katherine P.¹ ; Amacher, Michael C.²; Palmer, Craig J.³

Subjects: *FOREST management; *FORESTS & forestry; *FOREST surveysUNITED States

• Source: Environmental Monitoring & Assessment. Aug2005, Vol. 107 Issue 1-3, p59-80. 22p.

تفاصيل العنوان

Patterns and general characteristics of severe forest dieback from 1950 to 1995 in the northeastern United States.

• Authors : Auclair, Allan N.D.¹

• Source: Canadian Journal of Forest Research. Jun2005, Vol. 35 Issue 6, p1342-1355. 14p. 2 Charts, 3 Graphs, 1 Map.

تفاصيل العنوان

Investigation in-situ Natural Ecosystems Using Physical Measuring Methods.

• Authors : Užupis, Arnoldas¹ ; Nemčiauskas, Kestutis¹

• Source: Proceedings of the International Scientific Conference: Rural Development. 2009, Vol. 4 Issue 1, p283-285. 3p. 7 Graphs.

تفاصيل العنوان

Eastern hemlock ( Tsuga canadensis ) in New River Gorge National Park and Preserve: Trends, Concerns, and Management

• Authors : Kull, Katie

Subjects: Eastern hemlock; New River National Park; New River (N.C.-W. Va.)West Virginia; United States

تفاصيل العنوان

Invasive Forest Pests: Lessons Learned from Three Recent Infestations May Aid in Managing Future Efforts: GAO-06-353.

• Authors : Nazzaro, Robin M.

Subjects: *ECOSYSTEM management; AGRICULTURAL pests; ECOLOGICAL disturbancesUNITED StatesUNITED States. Dept. of Agriculture ; UNITED States. General Accounting Office

• Source: GAO Reports. 5/22/2006, p1. 125p. 13 Black and White Photographs, 3 Graphs, 9 Maps.

تفاصيل العنوان

Invasive Forest Pests: Recent Infestations and Continued Vulnerabilities at Ports of Entry Place U.S. Forests at Risk: GAO-06-871T.

• Authors : Bertoni, Daniel

Subjects: *FORESTS & forestry; PESTS; WILDLIFE conservationUNITED StatesUNITED States. Dept. of Agriculture ; UNITED States. Dept. of Homeland Security

• Source: GAO Reports. 6/22/2006, p1. 17p.

تفاصيل العنوان

Invasive Forest Pests: Lessons Learned from Three Recent Infestations May Aid in Managing Future Efforts

• Authors : United States. Government Accountability Office.

Subjects: Government accountability -- United States; natural resources and environment; justice and law enforcementUnited States

تفاصيل العنوان

Evaluating Critical Uncertainty Thresholds in a Spatial Model of Forest Pest Invasion Risk.

• Authors : Koch, Frank H.¹ (AUTHOR); Yemshanov, Denys² (AUTHOR); McKenney, Daniel W.² (AUTHOR)

Subjects: *INTRODUCED species; *RISK management in business; *SPECIESCANADA; UNITED States

• Source: Risk Analysis: An International Journal. Sep2009, Vol. 29 Issue 9, p1227-1241. 15p. 2 Charts, 2 Graphs, 3 Maps.

تفاصيل العنوان