Lenk Ranch, Land Use Change: Forest-to-pasture in a Chronosequence
- Local identifier
- MRO10, MRO11, MRO12
- Years operational
- 1970—1990
- Objective
- Changes in soil organic matter and chemical characteristics by the introduction of cultivated pasture in a chronologically - we used soil δ13C distributions to determine the origin of soil C and to infer changes to soil C cycling patterns after forest clearing
- Description
- A native forest (as a reference, open Forest with Palm plants) and two pasture sites established at different times in Rondônia State, Brazilian Amazon Pasture sites: Brachiaria brizantha (20 years old pasture) and Panicum maximum (8 years old pasture)
- Data Access Statement
- Available to any researcher on request
- Data license
- Don't know
- Data policy
- Yes (not online)
- Organization
- Escola Superior de Agricultura "Luiz de Queiroz", University of São Pauloresearch organisation
- Person
- Prof Dr Carlos Eduardo Pellegrino Cerriprincipal investigatorEscola Superior de Agricultura "Luiz de Queiroz", University of São Paulo (ESALQ-USP)Soil Science
Site: Lenk Ranch
- Type
- farmer field
- Local code
- MRO10, MRO11, MRO12
- Location
- Ouro Preto do OesteRondôniaBrazil
- Geographic location
- -10.7333333, -62.2166667
- Elevation
- 228 Metres
- Visits permitted?
- No
- Soil type
- ferralsol
- Soil description
- tropical latosol (Medium/Clay) oxisols (USDA soil taxonomy)
- Soil properties
Variable Depth Value (range) Units Ref year Estimated? Baseline? sand content 0 – 10 Centimetres 61 Percent clay content 0 – 10 Centimetres 23 Percent soil density 0 – 10 Centimetres 1.24 gram per cubic centimetre soil pH 0 – 10 Centimetres 5.5 soil total carbon 0 – 10 Centimetres 1.59 Percent total soil nitrogen 0 – 10 Centimetres 0.13 Percent - Climatic type
- tropical rainforest / equatorial climate
- Climate description
- This city has a tropical climate. In winter, there is much less rainfall than in summer. According to Köppen and Geiger, this climate is classified as Aw. The average annual temperature in Ouro Preto do Oeste is 24.3 °C. In a year, the average rainfall is 1922 mm.
- Climate properties
Variable Time period Value (range) Units air temperature 1990 – 1990 25.6 degree Celsius
Design period: (1970—1990)
- Crops
Crop Years grown palisade grass 1970—1990 Guinea beans 1982—1990 primary forest
Related publications
- SOIL CARBON AND NITROGEN STOCKS FOLLOWING FOREST CLEARING FOR PASTURE IN THE SOUTHWESTERN BRAZILIAN AMAZON doi:10.1890/1051-0761(1997)007[1216:SCANSF]2.0.CO;2 [In English]
- Soil Carbon Stocks of the Brazilian Amazon Basin doi:10.2136/sssaj1995.03615995005900010038x [In English]