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Record Details

Record 60 of 52527
Effects of climate and lifeform on dry matter yield (epsilon) from simulations using BIOME BGC. [ecosystem process model for vegetation biomass production using daily absorbed photosynthetically active radiation]
Author and Affiliation:
Hunt, E. R., Jr.(NASA, Washington, DC, United States)
Running, Steven W.(Montana Univ., Missoula, United States)
Abstract: An ecosystem process simulation model, BIOME-BGC, is used in a sensitivity analysis to determine the factors that may cause the dry matter yield (epsilon) and annual net primary production to vary for different ecosystems. At continental scales, epsilon is strongly correlated with annual precipitation. At a single location, year-to-year variation in net primary production (NPP) and epsilon is correlated with either annual precipitation or minimum air temperatures. Simulations indicate that forests have lower epsilon than grasslands. The most sensitive parameter affecting forest epsilon is the total amount of living woody biomass, which affects NPP by increasing carbon loss by maintenance respiration. A global map of woody biomass should significantly improve estimates of global NPP using remote sensing.
Publication Date: Jan 01, 1992
Document ID:
19930064003
(Acquired Dec 28, 1995)
Accession Number: 93A48000
Subject Category: EARTH RESOURCES AND REMOTE SENSING
Document Type: Conference Paper
Publication Information: In: IGARSS '92; Proceedings of the 12th Annual International Geoscience and Remote Sensing Symposium, Houston, TX, May 26-29, 1992. Vol. 2 (A93-47551 20-43); p. 1631-1633.; (SEE A93-47551)
Publisher Information: Institute of Electrical and Electronics Engineers, Inc., New York, United States
Contract/Grant/Task Num: NSF BSR-89-19646; NAS5-31368; NAGW-952
Organization Source: NASA; Washington, DC, United States
NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 3p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: BIOMASS; COMPUTERIZED SIMULATION; DEHYDRATION; ECOSYSTEMS; FORESTS; REMOTE SENSING; ANNUAL VARIATIONS; CLIMATE CHANGE; DROUGHT; PHOTOSYNTHESIS; VEGETATIVE INDEX
Imprint And Other Notes: In: IGARSS '92; Proceedings of the 12th Annual International Geoscience and Remote Sensing Symposium, Houston, TX, May 26-29, 1992. Vol. 2 (A93-47551 20-43), p. 1631-1633.
Availability Source: Other Sources
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