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Investigation:

ND-06 (Gholz / Oliveira)

LBA Dataset ID:

ND06_LANDUSE_STUDIES

Originator(s):

1. MCGRATH, D.A.
2. SMITH, C.K.
      3. GHOLZ, H.L.
4. OLIVEIRA, F.A.

Point(s) of Contact:

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

Dataset Abstract:

We reviewed over 100 studies on nutrient dynamics in natural forests and forest-derived land uses (pasture, shifting cultivation and tree plantations) conducted in Amazonia over the past 40 years. Our objectives were to compare soil data from land uses across Amazonia and identify gaps in present knowledge that offer direction for future research. Specifically, we tested five widely cited hypotheses concerning the effects of land-use change on soil properties by analyzing data compiled from 40 studies in multi-factorial ANOVA models:
- soil pH, effective cation exchange capacity (ECEC), and exchangeable calcium (Ca) concentrations rise and remain elevated following the slash-and-burn conversion of forest to pasture or crop fields,
- soil contents of total carbon (C), nitrogen (N), and inorganic readily (i.e., Bray, Mehlich I or resin) extractable phosphorus (Pi) decline following forest-to-pasture conversion,
- soil concentrations of total C, N, and Pi increase in secondary forests with time since abandonment from agricultural activities,
- soil nutrient conditions under all tree-dominated land-use systems (natural or not) remain the same, and
- higher efficiencies of nutrient utilization occur where soil nutrient pools are lower.

Beginning Date:

1950-01-01

Ending Date:

2001-05-14

Metadata Last Updated on:

2012-09-25

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-06 Land Use Effects on Soil Nutrients: A Review of Studies 1950-2001 :  http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1130

Documentation/Other Supporting Documents:

LBA-ECO ND-06 Land Use Effects on Soil Nutrients: A Review of Studies 1950-2001 :  http://daac.ornl.gov/LBA/guides/ND06_LandUse_Studies.html

Citation Information - Other Details:

McGrath, D., C.K. Smith, H.L. Gholz, and F.A. Oliveira. 2012. LBA-ECO ND-06 Land Use Effects on Soil Nutrients: A Review of Studies 1950-2001. 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/1130

Keywords - Theme:

Parameter Topic Term Source Sensor
SOIL BULK DENSITY BIOSPHERE ECOLOGICAL DYNAMICS SOIL SURVEY HUMAN OBSERVER
SOIL CHEMISTRY BIOSPHERE ECOLOGICAL DYNAMICS SOIL SURVEY HUMAN OBSERVER
SOIL MOISTURE/WATER CONTENT BIOSPHERE SOILS SOIL SURVEY HUMAN OBSERVER
SOIL NUTRIENTS BIOSPHERE SOILS SOIL SURVEY HUMAN OBSERVER

Uncontrolled Theme Keyword(s):  AGROFOREST, CALCIUM, CARBON, FOREST CONVERSION, LAND-USE CHANGE, NITROGEN, PASTURE, PHOSPHORUS, SECONDARY FOREST, SHIFTING CULTIVATION, SOIL NUTRIENT DYNAMICS, TREE PLANTATIONS

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
  AMAZON BASIN 5.00000 -18.00000 -35.00000 -80.00000

Related Publication(s):

McGrath D.A., C.K. Smith, H.L. Gholz, and F.D. Oliveira. 2001. Effects of land-use change on soil nutrient dynamics in Amazonia, Ecosystems, 4(7):625-645.

Data Characteristics (Entity and Attribute Overview):

Data Characteristics:

Data are provided in a single comma-delimited ASCII file:

ND06_soil_properties_literature_survey.csv



File Contents and Organization:



Data Description: Comparison of results of over 100 studies between 1950-2001 in Amazonia to look at how land use affects soil nutrients





Filename: ND06_soil_properties_literature_survey.csv (Appendix from related publication)

LBA Dataset ID: ND06_LandUse_Studies



Column number Column heading Variable description

1 Region Regional abbreviations as follows: Amazonas, Brazil; Caqueta, Colombia;

Anangu, Ecuador, Mabura Hill, Guyana; Rondonia, Brazil;

San Carlos de Rio Negro, Venezuala; Yurimaguas, Peru

2 N_sites Number (n) of sites per study averaged

3 Land_use Land use: primary forest (p. for), secondary forest (s. for), pasture (pas),

shifting cultivation (cul), tree plantation or agroforest (pln)

4 Age_class Age class of land use: <= (less than or equal to) 5 years,

<=10 years, <=20 years, <=30 years, or unknown (primary forest age not known)

5 Soil_order Soil orders: Ult (US-Ultisol; FAO-Acrisols; Brazil-red-yellow Podzolics) and

Ox (US-Oxisol; FAO-Ferrasols; Brazil-yellow and red-yellow Latisols)

6 Depth Soil depth in centimeters

7 pH_H2O pH

8 Bd Soil bulk density expressed as g/cm3.

9 C_total Total carbon assayed using

(a) gas chromatography after dry combustion in a C and N analyzer or

(b) Walkley-Black method (low Ca soils only; Nelson and Sommers 1982) expressed as g/kg.

Soil contents of C in top 10 cm are the product of bulk density (Bd)

and C_total for each observation.

10 N_total Total nitrogen assayed using

(a) gas chromatography after dry combustion in a C and N analyzer or

(b) a Kjeldahl procedure (Bremmer and Mulvaney 1982).

Soil contents of N in top 10 cm are the product of bulk density (Bd)

11 P_total Total phosphorus measured

(a) colorimetrically or

(b) using inductively coupled argon plasma (ICAP) spectroscopy

after acid digestion (Olsen and Sommers 1982)

12 P_ext Extractable phosphorus (ext-Pi) measured colorimetrically or using ICAP after

(a) Mehlich double-acid,

(b) Bray, or

(c) resin extraction (Olsen and Sommers 1982)

13 Ex_Ca Exchangeable Ca assayed using ICAP or atomic absorption spectroscopy (AA)

following extraction in 1.0 M NH4OAc (pH 7) or a Mehlich I or

III double-acid solution (Thomas 1982)

14 ECEC Effective cation exchange capacity - sum of base cations

(extracted and assayed as described for Ex_Ca) -

exchangeable A1 (extracted in 1M KCl and assayed using ICAP or AA)

15 Clay Percent clay

16 Ref_num References of studies cited denoted by numbers below.

See companion file References.csv for complete citation.






Note: missing values are represented as -9999




Example data records:

Region,N_sites,Land_use,Age_class,Soil_order,Depth,pH_H2O,Bd,C_total,N_total,P_total,P_ext,Ex_Ca,ECEC,Clay, Ref_num,

\'Acre, Brazil\',8,p. for,,Ult,20,4.3,-9999,15.3,1.6,360,1.5,0.5,3.1,41,1,

\'Acre, Brazil\',8,pln,10,Ult,20,4.9,1.02,16.2,1.7,410,1.1,2,4.4,46,\'1,2\',

\'Acre, Brazil\',5,cul,5,Ult,20,5.9,1.1,10.1,0.9,-9999,8.1,1.8,3.38,-9999,3,

\'Acre, Brazil\',5,p. for,,Ult,20,4.7,1.1,8.1,0.8,-9999,2.8,0.81,2.22,-9999,3,

\'Acre, Brazil\',5,pas,20,Ult,20,5.4,1.3,10.3,1,-9999,4.6,3.07,4.95,-9999,3,

\'Amazonas, Brazil\',5,p. for,,Ult,10,4.1,-9999,34.6,1.9,-9999,2.3,0.1,3.3,51,4,

\'Amazonas, Brazil\',1,p. for,,Ox,5,3.6,-9999,61.7,3.8,-9999,-9999,-9999,-9999,70,5,

\'Amazonas, Brazil\',1,pas,5,Ox,5,4.7,-9999,94.1,4.1,-9999,-9999,-9999,-9999,-9999,5,

\'Amazonas, Brazil\',1,pas,10,Ox,5,4.5,-9999,76.4,4.8,-9999,-9999,-9999,-9999,-9999,5,

\'Caqueta, Columbia\',4,p. for,,Ult,20,4.1,1.02,12.2,1.1,200,2.5,0.2,4.05,19,\'6,7\',

Data Application and Derivation:

Historic soil properties data can be used to validate models and as a baseline of comparison for more recently collected data.

Quality Assessment (Data Quality Attribute Accuracy Report):

Quality Assessment:

Not applicable.

Process Description:

Data Acquisition Materials and Methods:

To compile our database, we reviewed over 100 studies of soil and plant nutrient dynamics in native

forests and forest-derived land uses conducted in the Amazon Basin over the past 4 decades. The final

data set used in our analyses was comprised of 39 studies representing five major land uses (primary

forest, secondary forest, pasture, annual crops, and tree plantations) across Amazonia.

To facilitate comparisons across studies, we developed specific criteria for including a study in

our analysis. First, to minimize variation due to inherent differences among soil orders, only data

from sites with soils identified as Ultisols or Oxisols were used. Together, Ultisols and Oxisols represent

60% to 75% of the region\'s soils (Sanchez and others 1982; Moraes and others 1995; Cerri and

others 2000). Excluded from our analysis were Amazonian forest and agricultural sites on sandy Spodosols

and more eutrophic Alfisols. Second, the depth of soil sampling in each study was placed into

one of three categories (0-5 cm, 0-10 cm, and 0-20 cm); studies in which sampling occurred

deeper in the soil profile were not included because the sample size was so small. Third, methods of soil

analysis in each study were carefully examined, and only data derived using the same, or very similar,

laboratory procedures were included (the analytical procedures used are footnoted in the Appendix of McGrath, et al. 2001).

Specific soil properties examined include concentrations of total C, N, P, extractable Pi, and exchangeable Ca,

ECEC, C:N ratios, and topsoil contents of C and N (0-10-cm depth), as well as pH and bulk density (Bd).

Extractable Pi refers to inorganic phosphate extracted using either a Bray, Mehlich (I or III), or resin extraction,

which, to date, are the most common procedures reported in Amazonian studies (Appendix). These procedures all extract

relatively similar quantities of Pi, which are presumably related to the most immediately plant available soil pool

(McGrath et al. 2001). Contents of total C and N in the top 10 cm of soil were estimated as the product of bulk density

and elemental concentrations for each observation that included these parameters (Appendix). This depth was selected

for estimating C and N contents because it was used in the majority of studies we reviewed.



The age of forest-derived land-use sites was also classified (5 years or less, 6-10 years, 10-20 years,

and more than 20 years). We assumed that primary or old-growth forests were over 100 years old, since

the age of these systems is generally not reported. We defined secondary forests as successional regrowth

of native vegetation following abandonment from annual cropping, cattle ranching, or logging,

and we assumed that the age reported for a secondary forest indicated the time since abandonment

of agricultural activities. In our data set, all but one secondary forest originated from abandoned

annual crop fields, often referred to as fallows.



Plantations refers to perennial crop-based agroforests, as well as stands of native or exotic

timber species. When possible, we calculated means on a per study basis for each land use within the

same soil order and, age and depth class to prevent a single study with multiple sites from disproportionately

influencing our analysis.



To test our five hypotheses, this final data set was analyzed in single- and two-stage ANOVA models

with variable classes of (a) land use, (b) soil order, (c) age of land use, and (d) sampling depth, and

their interactions. After we determined that age of land use and sampling depth had the least effect on

soil properties, these variable classes were dropped from our final analysis, which used a two-stage

sequential ANOVA model with factors of land use, soil order, and their interaction to calculate the

probability (P) values presented in Tables 1 and 2.



Our analysis assumes that studies of all forest-derived land uses were conducted on sites established

after clearing primary or old-growth forest for the first time, thus enabling us to make conclusions

about the effect of land-use change on soil fertility and nutrient pools. After examining significant land

use by soil order interactions, we used a Tukey\'s studentized range test to determine which of the

five land uses differed with respect to soil characteristics, as recommended by Zar (1999). This more

conservative multiple-comparison procedure was chosen because it controls type I error rates on an

experimentwise basis and accounts for unequal sample sizes (Ott 1988). Specifically, we used this

test to determine if soil properties differed among (a) primary forest vs other land uses, (b) pasture vs

forest, and (c) secondary forest vs other land uses.



To test the hypothesis that higher efficiencies of nutrient use occur where soil nutrient pools are

smaller, we regressed an index of nutrient-use efficiency (NUE) (inverse of litterfall N, P, or Ca content)

as a function of soil concentrations of total N, extractable Pi, and exchangeable Ca, when paired

data were available for any of the forest and nonforest land uses. This analysis was also performed

on log-transformed data. All analyses were performed using SAS (SAS Institute, Inc., Cary, NC,

USA).

References:

Alegre JC, Cassel DK, Bundy DE. 1986. Effects of land clearing and subsequent management on soil physical properties. Soil Sci Soc Am J 50:1379-84.



Beck MA, Sanchez PA. 1996. Soil phosphorus movement and budget after 13 years of fertilized cultivation in the Amazon basin. Plant Soil 184:23-31.



Botschek J, Ferraz, J, Jahnel M, Skowronek A. 1996. Soil chemical properties of a toposequence under primary rain forest in the Itacoatiara vicinity (Amazonas, Brazil). Geoderma 72:119-132.



Brouwer LC. 1996. Nutrient cycling in pristine and logged tropical rain forest: a study in Guyana. Tropenbos. Guyana series 1.



Buschbacher RJ, Uhl C, Serrao EAS. 1988. Abandoned pastures in eastern Amazonia II: nutrient stocks in soil and vegetation. J Ecol 76:682-99.



Cerri CC, Bernoux M, Arrouays D, Feigl BJ, Piccolo MC. 2000. Carbon stocks in soils of the Brazilian Amazon. In: Lal R, Kimble JM, Stewart BA. CRC Press LLC. editors. Global climate change and tropical ecosystems. Boca Raton (FL): p33-50.



Desjardins T, Andreux F, Volkoff B, Cerri CC. 1994. Organic carbon and 13C contents in soils and soil size-fractions, and their changes due to deforestation and pasture installation in eastern Amazonia. Geoderma 61:103-118.



Eden MJ, Furley PA, McGregor DFM, Milliken W, Ratter JA. 1991. Effect of forest clearance and burning on soil properties in northern Roraima, Brazil. Fort Eco Manage 38:283-90.



Eden MJ, McGregor DFM, Vieira NAQ. 1990. Pasture development on cleared forest land in northern Amazonia. Geog J 156:283-96.



Feigl BJ, Melillo J, Cerri CC. 1995. Changes in the origin and quality of soil organic matter after pasture introduction in Rondonia (Brazil). Plant Soil 175:21-29.



Gehring C, Denich M, Kanashiro M, Vlek PLG. 1999. Response of secondary vegetation in eastern Amazoˆ nia to relaxed nutrient availability constraints. Biogeochemistry 45:223-241.



Holscher D, Ludwig B, Moller RF, Folster H. 1997. Dynamic of soil chemical parameters in shifting cultivation agriculture in the eastern Amazon. Agric Ecosys Environ 6:153-163.



Kainer KA, Duryea ML, Costa de Macedo N, Williams K. 1998. Brazil nut seedling establishment and autecology in extractive reserves of Acre, Brazil. Ecol Appl 8:397-410.



Kato MSA. 1998. Fire-free land preparation as an alternative to slash-and-burn agriculture in the Bragantian region, eastern Amazon: crop performance and phosphorus dynamics [dissertation]. Gottingen: Georg-August University.



Kauffman JB, Cummings DL, Ward DE, Babbit R. 1995. Fire in the Brazilian Amazon: biomass, nutrient pools, and losses in slashed primary forests. Oecologia 104:397-408.



Korning J, Thomsen K, Dalsgaard K, Nørnberg P. 1994. Characters of three Udults and their relevance to the composition and structure of virgin rain forest of Amazonian Ecuador. Geoderma 63:145-164.



Koutika LS, Bartoli F, Andreux F, Cerri CC, Burtin G, Chone T, Philippy R. 1997. Organic matter dynamics and aggregation in soils under rain forest and pastures of increasing age in the eastern Amazon Basin. Geoderma 76:87-112.



Lips JM, Duivenvoorden JF. 1996a. Fine litter input to terrestrial humus forms in Colombian Amazonia. Oecologia 108:138-150.





Lips JM, Duivenvoorden JF. 1996b. Regional patterns of well drained upland soil differentiation in the middle Caqueta´ basin of Colombian Amazonia. Geoderma 72:219-257.



Markewitz D, Davidson E, Moutinho P, Nepstad D. 2001. Control of cation concentrations in stream waters by surface soil processes in an Amazonian watershed. Nature 410:802-804.



McGrath D, Comerford N, Duryea M. 2000a. Litter dynamics and monthly fluctuations in soil phosphorus availability in an Amazonian agroforest. For Eco Manage 131:167-184.



McGrath D, Duryea M, Cropper WP. 2001. Phosphorus availability and fine root proliferation in Amazonian agroforests six years following native forest conversion. Agri Ecosyst Environ 83:271-284.



McGrath D, Duryea ML, Comerford NB, Cropper WP. 2000b. Nitrogen and phosphorus cycling in an Amazonian agroforest nine years following forest conversion. Ecol Appl 10:1633-1647.



McNabb KL, Miller MS, Lockaby BG, Stokes BJ, Clawson RG, Stanturf JA, Silva JNM. 1997. Selection harvests in Amazonian rainforests: long-term impacts on soil properties. For Ecol Manage 93:153-160.



Montagnini F, Buschbacher R. 1989. Nitrification rates in two undisturbed tropical rain forests and three slash-and-burn sites of the Venezuelan Amazon. Biotropica 21:9-14.



Moraes JFL, Volkoff B, Cerri CC, Bernoux M. 1996. Soil properties under Amazon forest and changes due to pasture installation in Rondonia, Brazil. Geoderma 70:63-81.



Moraes JL, Cerri CC, Melillo JM, Kicklighter D, Neill C, Skole DL, and Steudler PA. 1995. Soil carbon stocks of the Brazilian Amazon Basin. Soil Science Society of America Journal 59: 244-247.



Neill C, Melillo JM, Steudler PA, Cerri CC, de Moraes JFL, Piccolo MC, Brito M. 1997b. Soil carbon and nitrogen stocks following forest clearing for pasture in the southwestern Brazilian Amazon. Eco Applications 7:1216-1225.



Neill C, Piccolo MC, Cerri CC, Steudler PA, Melillo JM, Brito M. 1997c. Net nitrogen mineralization and net nitrification rates in soils following deforestation for pasture across the southwestern Brazilian Amazon Basin landscape. Oecologia 110: 243-252.



Nepstad DC, Moutinho PR, Markewitz D. 2001. The recovery of biomass, nutrient stocks, and deep soil functions in secondary forests. In: McClain ME, Victoris RL, Richey JE, editors, The Biogeochemistry of the Amazon Basin. New York: Oxford University Press.



Ott L. 1988. An introduction to statistical methods and data analysis. 3rd ed. Boston: PWS-Kent.



Piccolo MC, Neill C, Melillo JM, Cerri CC, Steudler PA. 1996. 15N natural abundance in forest and pasture soils of the Brazilian Amazon Basin. Plant Soil 182:249-258



Poels RLH. 1987. Soils, water, and nutrients in a forest ecosystem in Suriname. [dissertation] Wageningen (The Netherlands): Agricultural University.



Russell CE. 1983. Nutrient cycling and productivity of native and plantation forests at Jari Florestal, Para, Brazil [dissertation]. Athens (GA): University of Georgia.



Sanchez PA, Bandy DE, Villachicia JH, Nicholaides JJ. 1982. Amazon Basin soils: management for continuous crop production. Science 216:821-827.



Sanchez PA, Villachica JH, Bandy DE. 1983. Soil fertility dynamics after clearing a tropical rainforest in Peru. Soil Sci Soc Am J 47:1171-1178.



Seubert CE, Sanchez PA, Valverde C. 1977. Effect of land clearing methods on soil properties and crop performance in an Ultisol of the Amazon jungle of Peru. Trop Agric (Trinidad) 54:307-321.



Smith CK, de Assis Oliveira F, Gholz H, Baima A. Soil carbon stocks after forest conversion to plantation in lowland Amazonia, Brazil. For Ecol Manage. Forthcoming.



Smith CK, Gholz HL, de Assis Oliveira F. 1998a. Soil nitrogen dynamics and plant-induced soil changes under plantations and primary terra firme forest in lowland Amazonia, Brazil. Plant Soil 200:193-204.



Smith CK, Gholz HL, de Assis Oliveira F. 1998b. Litterfall and nitrogen-use efficiency of plantations and primary forest in the eastern Brazilian Amazon. For Ecol Manage 109:209-220.



Spangenberg A, Grimm U, Sepeda da Silva JR, Folster H. 1999. Nutrient store and export rates of Eucalyptus urograndis plantations in eastern Amazonia (Jari). For Ecol Manage 80:225-34.



Thompson J, Proctor J, Viana V, Milliken W, Ratter JA, Scott DA. 1992. Ecological studies on a lowland evergreen rain forest on Maraca Island, Roraima, Brazil. I. Physical environment, forest structure and leaf chemistry. J Ecol 80:689-703.



Tiessen H, Chacon P, Cuevas E. 1994a. Phosphorus and nitrogen status in soils and vegetation along a toposequence of dystrophic rainforests on the upper Rio Negro. Oecologia 99:145-150.



Uhl C, Jordan CF. 1984. Vegetation and nutrient dynamics during the first five years of succession following forest cutting and burning in the Rio Negro region of Amazonia. Ecology 65:1476-1490.



Verchot LV, Davidson EA, Cattanio JH, Ackerman IL, Erickson HE, Keller M. 1999. Land use change and biogeochemical controls of nitrogen oxide emissions from soils in eastern Amazonia. Global Biogeochem Cycles 13:31-46.



Zar JH. 1999. Biostatistical analyses. 4th ed. Upper Saddle River (NJ): Prentice-Hall.

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