scholarly journals Structure and Composition of Old-Growth and Unmanaged Second-Growth Riparian Forests at Redwood National Park, USA

Forests ◽  
2014 ◽  
Vol 5 (2) ◽  
pp. 256-268 ◽  
Author(s):  
Christopher Keyes ◽  
Emily Teraoka
Keyword(s):  
National Park ◽  
Riparian Forests ◽  
Old Growth ◽  
Redwood National Park ◽  
Second Growth

Redwood National Park Expansion: Impact on Old-Growth Redwood Stumpage Prices

1988 ◽  
Vol 64 (3) ◽  
pp. 269
Author(s):  
Kent W. Olson ◽  
Ronald L. Moomaw ◽  
Richard P. Thompson
Keyword(s):  
National Park ◽  
Old Growth ◽  
Redwood National Park

Changes in the quantity and characteristics of large woody debris in streams of the Olympic Peninsula, Washington, U.S.A. (1982-1993)

1998 ◽  
Vol 55 (6) ◽  
pp. 1395-1407 ◽  
Author(s):  
Michael L McHenry ◽  
Eric Shott ◽  
Robert H Conrad ◽  
Glenn B Grette
Keyword(s):  
Woody Debris ◽  
Small Diameter ◽  
High Mobility ◽  
Decay Rates ◽  
Riparian Forests ◽  
Large Woody Debris ◽  
Olympic Peninsula ◽  
Old Growth ◽  
Second Growth ◽  
The Mean

We assessed the changes in large woody debris (LWD) abundance and composition at 28 sites in 27 low-gradient Olympic Peninsula streams between 1982 and 1993. The average number of pieces of debris was virtually identical (P = 0.98) in both years (50.7 versus 50.6). However, we found a significant (P <= 0.01) reduction in the total volume of LWD material in the stream sites surveyed (51.7 m3 ·100 m-1 in 1982 to 38.2 m3 ·100 m-1 in 1993). While the mean volume of second-growth derived LWD increased from 3.6 to 10.9 m3 ·100 m-1 (P < 0.01), the increase was insufficient to offset the loss of old-growth derived LWD. The mean volume of old-growth derived LWD for all sites decreased from 48.1 to 27.4 m3 ·100 m-1 between sample years (P < 0.01). The mean diameter of second-growth derived LWD was significantly larger in 1993 than in 1982, although still smaller than old-growth derived pieces. We measured a significant increase in the percentage of LWD pieces rated as highly decayed from 1982 to 1993. The results indicate that the loss of old-growth derived LWD following the removal of old-growth riparian forests is initially very rapid, followed by a slower rate of depletion associated with watershed destabilization. Inputs of LWD from second-growth riparian forests up to 73 years old were characterized by small diameter, high mobility, and high decay rates.

Discrimination of forest species by remote sensing in the national park "Smolenskoe Poozerie"

2020 ◽  
Author(s):  
Anna Narykova
Keyword(s):  
Tree Species ◽  
National Park ◽  
Tree Level ◽  
Large Area ◽  
Old Growth ◽  
Second Growth ◽  
High Resolution Images ◽  
User Demand ◽  
Coniferous Tree Species ◽  
Disturbed Habitats

&lt;p&gt;Forests cover about 40 percent of the Earth surface and they are very important for the ecosystems. For instance, forest land highly impacts carbon dynamics, provides habitats for organisms, conserves soil and water resources, and supports human demand for timber and recreation.&lt;/p&gt;&lt;p&gt;This study will discuss the method of determining the deciduous and coniferous tree species in forests by using Unmanned Aerial System (UAS) or drones for distinction of old-growth and second-growth forests. The key area of research is the national park in Smolensk region in the west of Russia, it is called &amp;#171;Smolenskoe Poozerie&amp;#187;.The original forests (old-growth) in this area are Pine-Spruce and Oak-Linden forests but the main part were cut down for agriculture and to fuel both industry and farms. The second-growth tree species, such as Poplar-Birch forests, have a tendency to spread to disturbed habitats and replace native tree species.&lt;/p&gt;&lt;p&gt;This theme is relevant because it is one of the modern methods of distinction of old-growth and second-growth forests. Drones are able to cover a relatively large area in a single flight. They operate on user demand and deliver very high resolution images. They have a huge advantage of mapping in order to analyze and monitor forest ecosystems on a tree-level, instead of on a stand-level.&lt;/p&gt;

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