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ビジネス · 2017/8/12 分で読めます

Umpqua and Diamond Lake Districts, Umpqua National Forest, Oregon, Calf Copeland Restoration Project

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概要

Calf and Copeland Creek are major tributaries to the North Umpqua River and lie in the very center of the Umpqua National Forest. The 51,650 acre planning area is within a mixed-severity fire regime landscape in which the steep slopes and canyons historically tended to burn hot while the benches and ridges tended towards high-frequency, low-severity fire. As a consequence, the benches and ridges developed open stands of mixed-age Douglas-fir, sugar pine, ponderosa pine and incense-cedar. Fire suppression and past timber harvest have converted these areas to overstocked stands of predominately young Douglas-fir and white fir that are rapidly choking out the pine and leaving the entire landscape at risk to uncharacteristic wildfire. The Umpqua National Forest has witnessed a sharp increase in wildfire over the last couple of decades. During this period, tens of thousands of acres have burned within the planning area and the immediately adjacent watersheds, about 20,000 acres of which were stand replacement fire within habitat for the northern spotted owl. This project proposes a combination of timber harvest, non- commercial thinning, and prescribed fire to reduce stem densities and

情報源の原言語: Federal Register — Agriculture Department原文の発表を開く →

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