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Investigation:

ND-04 (Fernandes / Wandelli)

LBA Dataset ID:

ND04_C_NUTRIENT_STOCKS

Originator(s):

1. FELDPAUSCH, T.R.
2. RONDON, M.A.
3. FERNANDES, E.C.M.
      4. RIHA, S.J.
5. WANDELLI, E.

Point(s) of Contact:

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Dataset Abstract:

Over the past three decades, large expanses of forest in the Amazon Basin were converted to pasture, many of which later degraded to woody fallows and were abandoned. While the majority of tropical secondary forest studies have examined post-deforestation or post-agricultural succession, we examined post-pasture forest recovery in 10 forests ranging in age from 0 to 14 years since abandonment. We measured aboveground biomass and soil nutrients to 45 cm depth and computed total site carbon (C) and nutrient stocks to gain an understanding of the dynamics of nutrient and C buildup in regenerating secondary forests in central Amazonia.

Beginning Date:

2000-11-01

Ending Date:

2001-07-15

Metadata Last Updated on:

2012-02-29

Data Status:

Archived

Access Constraints:

PUBLIC

Data Center URL:

http://daac.ornl.gov/

Distribution Contact(s):

ORNL DAAC User Services Office Oak Ridge National Laboratory Oak Ridge, Tennessee 37 (ornldaac@ornl.gov)

Access Instructions:

PUBLIC

Data Access:

IMPORTANT: The LBA-ECO Project website is no longer being supported. Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC. Please follow the fair use guidelines found in the dataset documentation when using or citing LBA data.
Datafile(s):

LBA-ECO ND-04 Secondary Forest Carbon and Nutrient Stocks, Central Amazonia, Brazil :  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1069

Documentation/Other Supporting Documents:

LBA-ECO ND-04 Secondary Forest Carbon and Nutrient Stocks, Central Amazonia, Brazil :  http://daac.ornl.gov/LBA/guides/ND04_C_Nutrient_Stocks.html

Citation Information - Other Details:

Feldpausch, T.R., M.A. Rondon, E.C.M. Fernandes, S.J. Riha. and E. Wandelli. 2012. LBA-ECO ND-04 Secondary Forest Vegetation and Soil Carbon and Nutrient Stocks, Brazil. Data set. Available on-line (http://daac.ornl.gov) from Oak Ridge National Laboratory Distributed Active Archive Center, Oak Ridge, Tennessee, U.S.A. http://dx.doi.org/10.3334/ORNLDAAC/1069

Keywords - Theme:

Parameter Topic Term Source Sensor
ABOVEGROUND BIOMASS AGRICULTURE AGRICULTURAL PLANT SCIENCE FIELD INVESTIGATION ANALYSIS
NUTRIENTS LAND SURFACE SOILS FIELD INVESTIGATION ANALYSIS
REFORESTATION HUMAN DIMENSIONS ENVIRONMENTAL IMPACTS FIELD INVESTIGATION ANALYSIS

Uncontrolled Theme Keyword(s):  ABANDONED LAND, ABANDONED PASTURE, ACRONYMS:, AGROFORESTRY SYSTEMS, ALLOMETRIC EQUATIONS, AMAZON, BELLUCIA, BIOMASS, BIOMASS EQUATIONS, BRACHIARIA, BRAZIL, CARBON SEQUESTRATION, CARBON STOCKS, CATTLE, CECROPIA, DEGRADED LANDS, FOREST RECOVERY, FOREST REGENERATION, GRAZING, MANAUS, NITROGEN, NUTRIENT STOCKS, OXISOL, PASTURE, PHOSPHORUS, SECONDARY FOREST, SUCCESSION, SUFRAMA: BRAZILIAN FEDERAL AGENCY SUPERINTENDENCIA DA ZONA FRANCA DE MANAUS, VISMIA

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
  AMAZONAS (MANAUS) -2.00000 -2.57160 -59.00000 -60.03000

Related Publication(s):

dos Santos, U.M., J.F.D. Goncalves, and T.R. Feldpausch. 2006. Growth, leaf nutrient concentration and photosynthetic nutrient use efficiency in tropical tree species planted in degraded areas in central Amazonia. Forest Ecology and Management 226(1-3):299-309.

Feldpausch, T., S.J. Riha, E.C.M. Fernandes, and E. Wandelli. 2005. Development of Forest Structure and Leaf Area in Secondary Forests Regenerating on Abandoned Pastures in Central Amazonia. Earth Interactions 9(6):1-22.

Feldpausch, T.R. 2002. Carbon and nutrient accumulation, forest structure, and leaf area in secondary forests regenerating from degraded pastures in Central Amazonia, Brazil. Thesis, Cornell University.

Feldpausch, T.R., M.A. Rondon, E.C.M. Fernandes, S.J. Riha, and E. Wandelli. 2004. Carbon and nutrient accumulation in secondary forests regenerating on pastures in central Amazonia. Ecological Applications 14(4):S164 - S176.

Silva, C. E. M. d. 2005. Eficiencia no uso dos nutrientes por especies pioneiras apos correcao da acidez do solo e adubacao fosfatada sobre area degradada na Amazonia central - M.S. Thesis. Instituto Nacional de Pesquisas da Amazonia, Manaus, Brazil.

Silva, C. E. M. d., J. F. d. C. Goncalves, T. R. Feldpausch, F. J. Luizao, R. R. d. Morais, and G. O. Ribeiro. 2006. Eficiencia no uso dos nutrientes por especies pioneiras crescidas em pastagens degradadas na Amazonia central (Nutrient use efficiency for pioneer species grown on abandoned pastures in central Amazonia). Acta Amazonica 36:503-512.

Zarin, D.J., E.A. Davidson, E. Brondizio, I.C.G. Vieira, T. Sa, T. Feldpausch, E.A. Schuur, R. Mesquita, E. Moran, P. Delamonica, M.J. Ducey, G.C. Hurtt, C. Salimon, and M. Denich. 2005. Legacy of fire slows carbon accumulation in Amazonian forest regrowth. Frontiers in Ecology and the Environment 3(7):365-369.

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

These data are provided in one comma-separated ASCII file:


ND04_Secondary_Forest_Carbon_and_Nutrient_Stocks.csv




File Contents and Organization:


Column Column Variable Description

Number Heading

1 Location_ID Sampling location ID code,

consisting of fazenda name code + forest number

(See companion file: ND04_Secondary_Forest_Plot_Information.csv)

2 Stand_age Secondary forest age at the onset of the study

(years since pasture abandonment) in ranges:

0 to 2, 2 to 4, 4 to 6, 6 to 8, 12 to 14

3 Pool Identification of the pool measured, includes:

three soil pools:

- soil 0-15 centimeters depth

- soil 15-30 centimeters depth

- soil 30-45 centimeters depth

two vegetation pools:

- wood

- foliage

4 C Carbon pool size in megagrams per ha (Mg ha-1)

5 N Nitrogen pool size in kilograms per ha (kg ha-1)

6 P Phosphorus pool size in kilograms per ha (kg ha-1)

7 K Potassium pool size in kilograms per ha (kg ha-1)

8 Ca Calcium pool size in kilograms per ha (kg ha-1)

9 Mg Magnesium pool size in kilograms per ha (kg ha-1)




There are no missing data values.


Example data records:


Location_ID,Stand_age,Pool,C,N,P,K,Ca,Mg

DAS-1,0 to 2,soil 0-15,24.7,2215.1,4.7,38.8,92.9,41.4

Rodao-1,0 to 2,soil 0-15,19.5,1381.3,8.4,22.7,60.6,25.3

Rodao-4,2 to 4,soil 0-15,29.3,1761.6,4.4,25.5,102.3,25.3

DAS-2,4 to 6,soil 0-15,36.5,2576.2,5.7,62.4,138.3,64.4

Rodao-3,4 to 6,soil 0-15,22,1437.9,12.1,31.2,45.5,31

Dimona-1,6 to 8,soil 0-15,29.6,1938.7,2.3,28.4,280.5,82.8

Dimona-3,6 to 8,soil 0-15,37.5,2388.8,2.7,49.2,216,81.6

Rodao-2,6 to 8,soil 0-15,29.8,1958.5,5.4,23.6,58.7,24.1

DAS-3,12 to 14,soil 0-15,17.2,2458.6,2.7,29.3,123.2,34.5

Dimona-2,12 to 14,soil 0-15,37.8,2476.7,1.7,25.5,60.6,37.9

Data Application and Derivation:

The carbon and nutrient stock data represents some of the first ground-based post-pasture secondary forest data that could be used in support of forest succession, nutrient reallocation and carbon accumulation modelling for central Amazonia. Integration with remotely sensed data could provide ground-based measurements for classification of secondary forest recovery over central Amazonia.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

The less than or equal to 1 cm diameter constraint imposed by the limits of the allometric equations may significantly underestimate biomass and nutrient stocks given the absence of root and biomass measurements of young secondary forest vegetation less than 1 cm DBH. Shrubs and herbaceous vegetation dominate early pasture succession and secondary forest understories contributing considerable quantities to C and nutrient stocks (McKerrow 1992). Wood core measurements may overestimate nutrient concentrations in young stands since a greater proportion of the sample core is nutrient rich bark.

Process Description:

Data Acquisition Materials and Methods:

Study sites:</b>


The study sites are located in the state of Amazonas, Brazil along the road BR-174 north of the city of Manaus. The terrain is undulating with an elevation of 50-150 m.a.s.l. The plateau soil is classified as dystrophic, isohyperthermic, clayey kaolinitic Hapludoxes with approximately 80 to 95 % clay. Regional climate is tropical humid and the mean temperature is 26.7 degrees C. Mean annual rainfall in Manaus is 2.2 meters with March and April the wettest months.



Ten secondary forests were selected within three fazendas (cattle ranches) now in various stages of grazing, pasture abandonment or pasture reclamation: Fazenda Rodao (km 46), Embrapa-District of SUFRAMA (DAS) pasture research site (km 53) and Fazenda Dimona (km 72). Secondary forest selection was based on forest age (time since pasture abandonment), and independence from other plots within the same fazenda. Within each forest located on plateau Oxisols we established four plots of 100 m2 to 400 m2 area. Within each plot 3 subplots ranging in size from 35 to 225 m2 were established as well.



Biomass and tissue analyses:</b>


Within each subplot we measured the diameter at breast height (DBH, measured at 1.3 meters above the ground surface, or above prop roots where they occurred) for all live trees with diameters greater than or equal to 1 cm. Using two sets of allometric equations developed in the region (for stems greater than 5 cm diameter from Nelson et al. 1999, for smaller stems from Mesquita unpublished data) we calculated dry biomass for each tree and converted the estimates to megagrams per hectare (Mg ha-1).



Vegetation nutrient stocks: </b>


In late June/early July of 2001 we collected mature sun leaves from the canopies of 15 randomly selected trees with diameters greater than or equal to 1 cm. From the same trees we took two core samples of wood and bark at 1.3 meters height.

Foliage and wood samples were pooled into three sample composites of 5 trees each. Tissue was dried at 70 degrees C, ground and analyzed for total nutrient (C, N, P, K, Ca and Mg) concentrations using standard Embrapa laboratory techniques (Silva 1999).



Using species specific foliage to wood ratios (RCG Mesquita unpublished manuscript) we partitioned the biomass estimates into wood and foliage components. We then calculated the aboveground carbon and nutrient stocks by multiplying the mean nutrient concentrations for foliage and wood by the allometric estimates of each biomass component for individual trees.



Soil analysis:</b>


In early November 2000 we sampled soil to 45 centimeter depth in three depth classes (0-15, 15-30, and 30-45 cm) within each of the four plots per forest. The four soil samples per depth in each forest represent a composite of 4-6 subsamples per sample. Soil composites were combined in the field, air dried in solar dryers, visible charcoal and roots were removed by hand, then soils were milled and sieved through a 2 mm sieve prior to analysis for C, N, P, K, Ca and Mg. Extractable soil P and exchangeable K were analyzed using a Melich-I double acid extraction ( 0.05 M HCl and 0.0125 M H2SO4). Exchangeable Ca and Mg were extracted with a 1M KCl solution. Total soil N was determined by the Kjeldhal technique and total soil C by wet digestion (Silva 1999).

References:

McKerrow, A.J. 1992. Nutrient stocks in abandoned pastures of the central Amazon basin prior to and following cutting and burning. Thesis. University of North Carolina, Raleigh North Carolina, USA.



Nelson, B.W., R. Mesquita, J.L.G. Pereira, S.G.A. d. Souza, G.T. Batista and L.B. Couto. 1999. Allometric regressions for improved estimate of secondary forest biomass in the central Amazon. Forest Ecology and Management 117: 149-167.



Silva, F.C. d. 1999. Manual de analises quimicas de solos,plantas e fertilizantes. EMBRAPA Communicacao para Transferencia de Technologia. Brasilia, Brasil.

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