Validation of land-use changes in Peruvian Amazon (Yurimaguas) using Terra-i system data

Louis Reymondina, Jhon Telloa, Paula Paza and Reynaldo Solisb

a International Center for Tropical Agriculture (CIAT), Km 17 recta Cali-Palmira, Cali, Colombia.b Instituto de Investigaciones de la Amazonia Peruana (IIAP), Avenida José A. Quiñonez Km 2.5, Iquitos,Perú.

Free data for monitoring

natural cover changes

•A monitoring tool to detect areas of rapid vegetation change;•250m resolution (changes in land cover larger than 5 ha are identified);

•Frequent natural cover change monitoring, every 16 days;

•Latin America , Asia, Africa and Oceania coverage (currently); shortly integration with the Global Forest Watch (GFW) initiative;

•Web tools available to visualize and download output data.

The Bottom Line Limits...

Terra-i IS NOT the tool togive detailed estimations ofdeforestation.However, Terra-i could helpto prioritize high-resolutionanalyses

Spatial distribution and dynamics of change in Yurimaguas, Peru

January 2004 – April 2015Loss of land cover detected by Terra-i = 9.1 %

January 2013 – April 2015Loss of land cover detected by Terra-i = 1.78 %

Validate recent land-use changes detected by Terra-i system on local level between January 2013 and

Abril 2015 in influence areas located close to Yurimaguas, Peru.

Aim

Methodology

Main roads and river as axis of settlement andgrowth of the villages of Yurimaguas.

Main access routes (main road and rivers) weredrawn using base maps of Google Earth.

Then, we plotted three areas of influence of 1, 3 and5 km (river and roads) with aims to know thedynamic of changes in Yurimaguas.

Criteria:Section 1: Road Yurimaguas -Balsapuerto

Section 2: Road towards the new port terminal

Section 3: Huallaga river.65 sample pixels selected from a total sample of 555 detection pixels included in the study area. Random sampling with 12% of the total sample.

Distance Buffer (km) SECTION 1 SECTION 2 SECTION 3

1 5/15 7/33 3/17

3 5/15 14/33 6/17

5 5/15 12/33 8/17

Data 2013 32

Data 2014 29

Data 2015 4

Estimation of area via proportions methodology.

Source: IPPC. 2003.Good Practice Guidance for Land Use,Land-Use Change and Forestry.

RESULTS

POINTS: 33

By road: 20Overflight: 13

LAND-USE CHANGES AGENTS

HUMANCattle raising +Commercial agriculture (oil palm, rice, cacao, etc.), and subsistence agriculture (cassava, banana, etc).

Oil palm, new private roads

(company)

EXAMPLE: SECTION 2

Rice, cassava, banana and cacao

Rice and fallow

Oil palm, banana and pasturesPapaya

Rice

Interpretation: Dynamics of land cover and land use

River

High presence of crops under shifting cultivation in small areas.

Increasing of papaya plantations with areas between 30 and 40 hectares.

Migrations of people for working on cattle ranching.

Increasing of rice plantations on river sides.

High dynamics of changes.

Shifting cultivation for supply basic necessities, selling the products in the nearby villages.

Road

Crops in bigger areas on the road than on the river.

Flat lands facilitate the installation of oil palm plantations.

Construction of new roads into oil palm plantations.

Shifting cultivation and cattle ranching in steep areas for supply basic necessities.

Increasing of papaya plantations.

Implementation of forest plantations (Tectona grandis and Calycophyllumspruceanum) in primary forest.

Migration.

Thanks!

Aircraft photo by P. Paz (2015) - Oil palm plantation in a primary forest margin in the Loreto region, Perú

Our final goal is sharing the complete validation protocol version and results with free and easy access on our project website, www.terra-i.org for supporting future projects by researchers, land managers,

and public end users!

Also you can download our first field work with the protocols in the Terra-i website.

Further details about the p.a.paz@cgiar.org or j.j.tello@cgiar.org

www.youtube.com/user/Terraiproject