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Influence Of Some Environmental Factors On Initial Establishment And Growth Of Ponderosa Pine Seedlings, United States Department Of Agriculture, Forest Service
Influence Of Some Environmental Factors On Initial Establishment And Growth Of Ponderosa Pine Seedlings, United States Department Of Agriculture, Forest Service
Forestry
Study plots were established to determine the effects of various environmental factors on ponderosa pine seed germination and initial seedling establishment and growth. A series of soil surface treatments were performed on plots in two locations: within or under the influence of overstory pine trees and in openings away from the pine influence. Seed germination was significantly greater in the opening plots. The overstory canopy and forest floor restricted the amounts of precipitation, light, and heat reaching the soil and probably decreased germination. Cutworms, birds, and small mammals caused the greatest seedling mortality. The largest seedlings occurred in the fire-treated …
Blm Utah Final Initial Wilderness Inventory, United States Bureau Of Land Management
Blm Utah Final Initial Wilderness Inventory, United States Bureau Of Land Management
All U.S. Government Documents (Utah Regional Depository)
In the BLM Wilderness Program, only inventory is completed without consideration of other uses of the land. The wilderness inventory is only for the purpose of determining the presence of wilderness characteristics. It is on that basis that wilderness study areas will be identified. The comparison of wilderness values with other resource values is not part of the wilderness inventory process. It is a valid and necessary part of phase two study. When we enter phase two, the latter part of 1980, it will be imperative for us to consider and resolve whether the orderly development or wise preservation within …