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Author: Kathleen Geier-Hayes
Publisher: DIANE Publishing
ISBN: 0788143034
Category :
Languages : en
Pages : 64
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Book Description
Shade may be critical through the summer for conifer regeneration survival on warm, dry sites. Shadow lengths vary by latitude, aspect, & slope; southerly aspects have shorter shadows than northerly aspects at the same time. Differently shaped trees also produce different shadow lengths. This guide provides silviculturists with a method for determining tree shadow lengths in a straight line from the tree's base to the shadow tip from southern Utah to northern Idaho for May 10 through Oct. 11 on different slopes, aspects, & for two tree shapes. Charts & tables.
Author: Kathleen Geier-Hayes
Publisher: DIANE Publishing
ISBN: 0788143034
Category :
Languages : en
Pages : 64
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Book Description
Shade may be critical through the summer for conifer regeneration survival on warm, dry sites. Shadow lengths vary by latitude, aspect, & slope; southerly aspects have shorter shadows than northerly aspects at the same time. Differently shaped trees also produce different shadow lengths. This guide provides silviculturists with a method for determining tree shadow lengths in a straight line from the tree's base to the shadow tip from southern Utah to northern Idaho for May 10 through Oct. 11 on different slopes, aspects, & for two tree shapes. Charts & tables.
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 324
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Book Description
Author: C. Kerry Overton
Publisher:
ISBN:
Category : Ecosystem management
Languages : en
Pages : 530
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Book Description
"This user's guide and reference document describes the physical features of the Salmon River Basin, Idaho, stream channels that represent "natural conditions" for fish habitat-that is, streams that have not been influenced by major human disturbances. The data base was created to assist biologists and resource managers. It describes resource conditions that can be achieved through management objectives."
Author: Ervin G. Schuster
Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 796
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Author:
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ISBN:
Category : Forest canopies
Languages : en
Pages : 92
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Book Description
The Forest Inventory and Analysis (FIA) Program of the Forest Service, U.S. Department of Agriculture, conducts a national inventory of forests across the United States. A systematic subset of permanent inventory plots in 38 States is currently sampled every year for numerous forest health indicators. One of these indicators, crown-condition classification, is designed to estimate tree crown dimensions and assess the impact of crown stressors. The indicator features eight tree-level field measurements in addition to variables traditionally measured in conjunction with FIA inventories: vigor class, uncompacted live crown ratio, crown light exposure, crown position, crown density, crown dieback, foliage transparency, and crown diameter. Indicators of crown health derived from the crown data are intended for analyses at the State, regional, and national levels, and contribute to the core tabular output in standard FIA reports. Crown-condition measurements were originally implemented as part of the Forest Health Monitoring (FHM) Program in 1990. Except for crown diameter, these measurements were continued when the FIA Program assumed responsibility for FHM plot-based detection monitoring in 2000. This report describes in detail the data collection and analytical techniques recommended for crown-condition classification.
Author: Frans Bongers
Publisher: Earthscan
ISBN: 1849776407
Category : Nature
Languages : en
Pages : 385
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Book Description
Forest degradation as a result of logging, shifting cultivation, agriculture and urban development is a major issue throughout the tropics. It leads to loss in soil fertility, water resources and biodiversity, as well as contributes to climate change. Efforts are therefore required to try to minimize further degradation and restore tropical forests in a sustainable way. This is the first research-based book to examine this problem in East Africa. The specific focus is on the forests of Ethiopia, Tanzania and Uganda, but the lessons learned are shown to be applicable to neighbouring countries and others in the tropics. A wide range of forest types are covered, from dry Miombo forest and afromontane forests, to forest-savannah mosaics and wet forest types. Current management practices are assessed and examples of good practice presented. The role of local people is also emphasized. The authors describe improved management and restoration through silviculture, plantation forestry and agroforestry, leading to improvements in timber production, biodiversity conservation and the livelihoods of local people.
Author: Stephen S. Sackett
Publisher:
ISBN:
Category : Prescribed burning
Languages : en
Pages : 720
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Book Description
Soil and cambium temperatures must be known to ascertain certain effects of prescribed fires on trees. Thermocouple-based systems were devised for measuring soil and cambium temperatures during prescribed fires. The systems, which incorporate both commercially available and custom components, perform three basic functions: data collection, data retrieval, and data translation. Although the systems and procedures for using them were designed for research purposes, they could be adapted for monitoring operational prescribed fires.
Author:
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Category : Government publications
Languages : en
Pages : 840
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Book Description
Author:
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ISBN:
Category : Conservation of natural resources
Languages : en
Pages : 706
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Book Description
Author:
Publisher:
ISBN:
Category : Biomass energy
Languages : en
Pages : 118
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Book Description
