نتایج جستجو برای: china udsa forest service rmrs p
تعداد نتایج: 1850109 فیلتر نتایج به سال:
Composition of Diets Selected by Sitka Black-Tailed Deer on Channel Island, Central Southeast Alaska
Pacifi c Northwest Research Station September 2014 Forest Service DPAR TMENT OF AGRICUL T U RE 1 Th omas A. Hanley is a research wildlife biologist, U.S. Department of Agriculture, Forest Service, Pacifi c Northwest Research Station, Forestry Sciences Laboratory, 11175 Auke Lake Way, Juneau, AK 99801. Michael P. Gillingham and Katherine L. Parker are professors, Natural Resources and Environmen...
BRIAN M. WEIGEL*, LIZHU WANG*, PAUL W. RASMUSSEN*, JASON T. BUTCHER , PAUL M. STEWART , THOMAS P. SIMON § AND MICHAEL J. WILEY *Wisconsin Department of Natural Resources, Bureau of Integrated Science Services, Monona, WI, U.S.A. †U.S. Forest Service, Superior National Forest, Duluth, MN, U.S.A. ‡Troy State University, Department of Biological and Environmental Sciences, Troy, AL, U.S.A. §U.S. F...
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC-BY-NC-SA 4.0), which permits unrestricted noncommercial use and redistribution provided that the original author and source are credited and the new work is distributed under the same license as the original. Pinus kesiya Royle ex Gordon var. langbianensis (A. Chev.) Gaussen (Pinaceae) is ...
Stable isotopes in wood cellulose of tree rings provide a high-resolution record of environmental conditions, yet intra-annual analysis of carbon and oxygen isotopes and their associations with physiological responses to seasonal environmental changes are still lacking. We analyzed tree-ring stable carbon (δ13C) and oxygen (δ18O) isotope variations in the earlywood (EW) and latewood (LW) of pin...
Nitrogen (N) is considered the dominant limiting nutrient in temperate regions, while phosphorus (P) limitation frequently occurs in tropical regions, but in subtropical regions nutrient limitation is poorly understood. In this study, we investigated N and P contents and N:P ratios of foliage, forest floors, fine roots and mineral soils, and their relationships with community biomass, litterfal...
This article discusses the recent technology transfer to Chinese software firms from Japanese offshore software development. Since the end of the 1990s, Chinese software firms have obtained a significant amount of technology contract work from Japan, including coding, testing, and design. Chinese firms have been increasing their design skills through this joint software development with Japan. ...
Effect of Forest Structural Change on Carbon Storage in a Coastal Metasequoia glyptostroboides Stand
Forest structural change affects the forest's growth and the carbon storage. Two treatments, thinning (30% thinning intensity) and underplanting plus thinning, are being implemented in a coastal Metasequoia glyptostroboides forest shelterbelt in Eastern China. The vegetation carbon storage significantly increased in the underplanted and thinned treatments compared with that in the unthinned tre...
The mechanisms underlying the retention of inorganic N in acidic forest soils in southern China are not well understood. Here, we simultaneously quantified the gross N transformation rates of various subtropical acidic forest soils located in southern China (southern soil) and those of temperate forest soils located in northern China (northern soil). We found that acidic southern soils had sign...
The fuel characteristics that influence the initiation and spread of wildfires were measured in Keteleeria fortune forest (FT1), Pinus yunnanensis forest (FT2), P. yunnanensis and Platycladus orientalis (L.) Franco mixed forest (FT3), P. yunnanensis Franch and K. fortunei (Murr.) Carr mixed forest (FT4), Tsuga chinensis forest (FT5), and P. orientalis forest (FT6) in southwest Sichuan Province,...
Quantitative relationships between stand indices and carbon dioxide (CO2) stocking are missing in the evergreen broadleaved forests (EBLFs) in eastern China and this hinders to estimate carbon (C) budget in the subtropical region. We determined the vegetation-soil C pool and CO2 stocking using stand indices [diameter at breast height (DBH), total height (H) and wood density] in Schima superba d...
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