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2 edition of Organic matter content of soil after logging of fir and redwood forests found in the catalog.

Organic matter content of soil after logging of fir and redwood forests

Philip B Durgin

Organic matter content of soil after logging of fir and redwood forests

by Philip B Durgin

  • 170 Want to read
  • 16 Currently reading

Published by U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station in Berkeley, Calif .
Written in English

    Subjects:
  • Humus,
  • Forest soils

  • Edition Notes

    StatementPhilip B. Durgin
    SeriesResearch note PSW -- 346
    ContributionsPacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
    The Physical Object
    Pagination4 p. :
    ID Numbers
    Open LibraryOL13604951M

    The amount and type of carbon (C) in a forest soil reflects the past balance between C accumulation and loss. In an old-growth forest soil, C is thought to be in dynamic equilibrium between accumulations and losses. Disturbance upsets this equilibrium by altering the microclimate, the amount and type of vegetation growing on a site, and properties that affect organic matter decomposition. The degree and extent of soil compaction, which may reduce productivity of forest soils, is believed to vary by the type of harvesting system, and a field-based study was conducted to compare soil compaction from cut-to-length (CTL) and whole-tree (WT) harvesting operations.

    Characteristics of soil δ 13 C values. Soil δ 13 C value vs. depth curves had similar patterns of variation for the soil profiles of different vegetation restoration sites (Fig. 5).As expected, the most negative values, indicating more input of new carbon, were found in the topsoil. Similar to observed changes in the SOC content, the largest soil δ 13 C changes were found in the surface layers. We use cookies to offer you a better experience, personalize content, tailor advertising, provide social media features, and better understand the use of our services.

      Contemporary soil science and conservation methods of effective forestry. Forests and the soils that serve as their foundation cover almost a third of the world’s land area. Soils influenced by forest cover have different properties than soils cultivated for agricultural use. Histosols of organic matter supporting epiphyte communities. (Both A and C.) undisturbed soils are rare in California. Fire can improve soil conditions for plants and associated bacteria. Redwood forests rely on summer fog to supply moisture during the seasonal drought.


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Organic matter content of soil after logging of fir and redwood forests by Philip B Durgin Download PDF EPUB FB2

Organic matter in soil controls a variety of soil properties. A study in Humboldt County, California, evaluated changes in percentages of organic matter in soil as a function of time after timber harvest and soil depth in fir and redwood forests.

To assess organic matter content, sam-ples were taken from cutblocks of various agesCited by: 3. Organic matter content of soil after logging of fir and redwood forests. Berkeley, Calif.: U.S. Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, (OCoLC) Material Type: Government publication, National government publication, Internet resource: Document Type: Book, Internet Resource.

Organic matter content of soil after logging of fir and redwood forests. Research Note PSW Berkeley, CA: U.S. Department of Agricultlure, Forest Service, Pacific Southwest Forest and Range Experiment Station; 4p. Organic matter content of soil after logging of fir and redwood forests / Philip B.

: Philip B. Durgin. Durgin, Philip B. Organic matter content of soil after logging of fir and redwood forests. USDA Forest Service, Research Note PSW Pacific Southwest Forest and Range Experiment Station, Berkeley, CA.

4 p. Fritz, Emanuel, and James A. Rydelius. Forests soils are important globally for many reasons, including the relatively large amount of carbon stored in forest soil organic matter. As a result, disturbance and subsequent changes in nutrient cycling in forest soils can potentially have large impacts on atmospheric levels of CO 2.

Soil disturbance caused by logging can impact both. Organic matter content of soil after logging of fir and redwood forests. Research Note PSW Berkeley, California: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S.

Department of Agriculture. 4 p. Durgin, Philip B. The influence of. The threshold value for organic matter in agricultural soil is 2 % by weight, beyond which soil quality does not remain sustainable, but no threshold level for forest soils has so far been established.

Forest mineral soils have generally 1–5 % organic matter by weight. Forest soils usually have higher organic matter than agricultural soils. Organic matter content of soil after logging of fir and redwood forests.

Research Note PSW Berkeley, California: Pacific Southwest Forest and Range Experiment Station, Forest Service, U.S. Department of Agriculture.

4 p. [ KB] Durgin, Philip. Subsurface drainage erodes forested granitic terrane. Physical Geography 4(1) [ KB]. When we clear cut and remove the redwood trees, a plant succession series follows.

Redwood, of course, sprouts and provides coppice growth, and a partially stocked stand will often result about 5 years after logging. Now if a fire happens to go through the area after logging, you may end up with a ceanothus brush (blue blossom) stage at this point.

Durgin, P.B. Organic matter content of soil after logging of fir and redwood forests. USDA Forest Service Res. Note PSW pacific Southwest Forest and Range Experiment Station, Berkeley, CA. Google Scholar.

increase organic matter content and discusses the land and cropping benefits that then accrue. The importance of soil organic matter Key to drought-resistant soil and sustained food production FAO SOILS BULLETIN FAO SOILS BULLETIN 80 8 0 F A O T h e i m p o r t a n c e o f s o i l o r g a n i c m a t t e r — K e t o d r o u g h t-r e s i s t.

Organic Carbon and Organic Matter. Organic carbon is the term used for soil carbon other than the carbon in carbonates, expressed as a percentage or weight (g/ g or g/kg of the fine earth fraction).

The total organic carbon content is obtained by a medium temperature resistance furnace. Organic Matter Content of Soil After Logging of Fir and Redwood Forests Philip B.

Durgin. RN Sprouting of old-growth redwood stumps first year after logging Robert L. Neal, Jr. A look at the forests of American Samoa Robert E.

Nelson. RN Effect of 2, and 2, 4, 5-T on water quality after a spraying treatment. The capacity of different microbial groups to recolonise soil after a fire event will be decisive in determining the microbial community after the fire. Microbial recovery after a wildfire that occurred in Sierra la Grana (Alicante province, southeast Spain) was tracked for 32 months after the fire.

Colony forming units (CFUs) of different microbial groups, microbial biomass, soil respiration. Histosols are soils that are composed mainly of organic materials. They contain at least 20 to 30% organic matter by weight and are more than 40 cm thick. Bulk densities are quite low, often less than grams per cubic centimeter.

The SOC concentration in forest soils may range from 0% in very young soils to as much as 50% (w/w) in some organic or wetland soils (Trettin and Jurgensen, ), with most soils containing between and % in the surface 20 cm of mineral soil (Perry, ).

Dear Colleagues, Fire can impact every square metre of the forest floor and influence the physical, chemical and biological nature of soil. Gaining a better understanding of the effects of fire on soil carbon is central to improving our understanding of the role of forests and forest soils in global carbon cycling.

We studied two soil types (Humitropept and Hapludand) of low bulk density (about Mg m−3 at m to Mg m−3 at m depth) and high organic matter content (about 7% at m to 4% at.

Growth of planted seedlings after intensive site preparation on two soil types in northern Idaho was influenced by soil organic matter content (table 10).

Western white pine (Pinus monticola Dougl. ex D. Don) and Douglas-fir growth was greater after 3 years in treatments with high organic matter content compared to scalped treatments.

This may. Kerstin Näthe, Delphis F. Levia, Markus Steffens, Beate Michalzik, Solid-state 13 C NMR characterization of surface fire effects on the composition of organic matter in both soil and soil solution from a coniferous forest, Geoderma, /ma,(), ().of decomposers and speeds decomposition of organic matter.

The small mammals that depended on the mature forest habitat and the food produced by mycorrhizal fungi of Douglas-fir disappear. Populations deeper in the soil also Jiang: but more slowly. Slash burning after logging additionally changes succes-sion of populations initiated by.Meanwhile, logging exposes the forest floor, compacts soils, and alters soil structure in ways that can also reduce vital soil nutrients.

And these declines grow more severe as forests experience instances of fire and logging repeatedly without having sufficient time between disturbances to fully recover.