Drone Data

Drones play a pivotal role in the 3LD-Monitoring system, complementing other data collection methods.Drones are essential tools in partner countries to fortify technical skills among local staff. These skills encompass flight planning, navigation and image evaluation. The drone monitoring aims to empower project staff to capture data tailored for photogrammetric analyses, from which crucial geoinformation emerges.

The drone mapping methodology encompasses five stages, with the first two focusing on drone operations:

 

  1. Mapping mission preparation (desktop work)
  2. Mapping mission execution (fieldwork)
  3. Development of Digital Surface Model (DSM) & Orthomosaic generation (desktop work)
  4. Data analysis and refinement (desktop work)
  5. Integration into the prevailing data system (desktop work)

 

Drone data aids in evaluating indicators linked to carbon/biomass, such as mortality rates and forest types. Notably, with the application of allometric equations and proper characterization of the land type, above-ground biomass estimations of trees can be determined.

Drones with pre-set flight planning capability ensure seamless orthophoto creation from individual images. This enables individual snapshots to seamlessly merge into an orthophoto (aerial photograph corrected for distortions, allowing accurate measurements). It's also vital to consider the availability of these drones in the local markets of partner countries. Leveraging local knowledge by involving local academia is paramount in this process. They can provide essential allometric equations, grounded in tree height, that facilitate precise biomass calculations.

Drones generate high resolution images, allowing a detailed overview of land cover changes, tree survival and erosion rates, among others. Combined with field data, drone-based monitoring is strengthened, guaranteeing a sound monitoring.

 

The heterogeneity of trees and vegetation density often hinders a sound extraction of common key points between the images, which is necessary to estimate the heights and other indicators. In this regard, increasing the overlap between images to a minimum of 85 % frontal and side overlap can improve the extraction of key points. Also, increasing the flight height of the drone reduces perspective distortion, which facilitates the detection of visual similarities between overlapping images. However, too much overlapping, i.e., high overlapping percentages result in higher amount of data, making data processing more time intensive.

 

Another aspect already mentioned is the availability of suitable drones in the partner countries. Importing drones to the respective countries is difficult, and bureaucratic barriers persist.

Satellite Data

Satellite data forms the bedrock of the 3LD-Monitoring system, harnessing the capabilities of open-source imagery from the Copernicus Sentinel-2 and LANDSAT satellites. An algorithm, meticulously developed by Remote Sensing Solutions (RSS) GmbH, revolutionizes this process. Users can seamlessly submit the shapefile of their area of interest, prompting the algorithm to automatically fetch and analyze relevant data. A spectrum of robust analyses are conducted including the 5-year vegetation trend using NDVI for assessing vegetation gains or losses, 5-year vegetation moisture analysis through NDWI, and a nuanced 5-year rainfall trend evaluation. Additionally, the algorithm facilitates the visualization of vegetation changes since the inception of the project, bolstering the monitoring framework with dynamic insights. Satellite data, a vital component of the 3LDM-Monitoring system, leverages open-source imagery from the Copernicus Sentinel-2 mission and LANDSAT satellites. For predefined areas, this data is automatically fetched and analyzed for specific parameters. Key analyses include a 5-year vegetation trend using NDVI as a proxy for vegetation gains or losses, a 5-year vegetation moisture trend through NDWI, and a 5-year rainfall trend. In addition vegetation changes from project start can be visualized.

Effective use of this building block hinges on users drawing and saving areas in GIS platforms like QGIS. Additionally, enhancing the shapefile with project specifics, such as start dates and FLR type, optimizes analysis. Proper training in these skills ensures accurate data input and tailored monitoring, making capacity building in these areas essential if not present.

While satellite data, especially open-source, offers broad insights, its capability for species identification is highly restricted, if not unattainable. This limitation emphasizes the indispensable role of field work in discerning species composition and characteristics. Additionally, understanding the innate constraints of satellite imagery, especially with young tree plantations, reinforces the need for integrating field and drone data to gain a comprehensive view of forest terrains.

Field Data

Satellite and drone images, despite their undeniable contribution for monitoring, they are limited in the initial years of FLR efforts. Data collection at field level is crucial in the first projects years.

 

Data collection at field level is further divided into three participative approaches:

 

  • Permanent sampling plots: Fixed plots, where tree height, DBH, and tree survival rates will be estimated. Permanent sampling plots will be assessed in 3-year interval, due to their high labor and time input.
  • Land use planning: discussion rounds for the assessment of information, as well as identification of endangered species according to the Red List of Threatened Species by the World Conservation Union (IUCN). It is integrated into other land use planning processes, and thus, has not a defined assessment interval.
  • Transects: Identification of floristic and faunistic species, as well as forest structure composition, in an assessment interval of three months

All relevant indicators included in the three participative approaches are collected using the KOBO Toolbox. This software offers suitable conditions and is easy to operate, aligning with the monitoring objectives of the project.

A participative approach is essential in guaranteeing a long-term monitoring of the restored areas. The symbiosis of local knowledge and training/capacity building of local staff and regional partners is the core of this approach. Identifying the needs of the community, organizing discussion rounds, involving the local community in the developing and testing of the monitoring system, encourages consciousness and connection to the restored landscape.

  • Field Data Priority: In early FLR stages, field-level data collection is more effective than relying solely on satellite and drone images.

  • Participative Approaches: Employing participative methods like permanent sampling plots, land use planning, and transects involves local communities and enhances monitoring.

  • Appropriate Technology: Using user-friendly tools like KOBO Toolbox aligns well with project objectives and simplifies data collection.

  • Local Community Engagement: Engaging and training local communities ensures long-term success and fosters a connection to the restored landscapes.

© Forests4Future, GIZ
Field Data
Satellite Data
Drone Data
Identifying mangrove restoration opportunities in three intervention regions

Through participatory Restoration Opportunities Assessment Methodology (ROAM)assessments in Guinea Bissau’s three geographical zones, Cacheu, Quinara, and Tombali, TRI was able to identify mangrove restoration opportunities in ten sites (five in the Cacheu, two in Quinara, and three in Tombali) and confirm the 1200 ha of mangrove landscape to be restored during the project’s implementation. The ROAM processes, which took place between 2020 and 2021, included all parts of the community discussing what the village priorities are, especially in regard to rice farming, one of the main competing priorities for mangrove restoration. Additionally, the processes also facilitated the development of the definition of intervention zones and the initiation of mangrove and rice field restoration. The implementation of the ROAM assessments ultimately contributed to the development of the project’s policy tools such as the National Mangrove Law and National Mangrove Strategy by enabling the actors and stakeholders involved in mangrove landscapes to move away from singular sites and consider the landscapes as a whole. Providing community input into village priorities and what a buffer zone in the law should look like, localized information was able to help develop the national policies.  

In order to conduct the ROAM assessments, TRI conducted trainings in November 2019, providing technicians with theoretical training in participatory territorial diagnosis tools. Guaranteeing those who were conducting the assessments were properly informed on the processes, TRI ensured the assessments adequately identified restoration opportunities and village priorities. 

The ROAM assessments provided valuable lessons, including what restoration opportunities existed in the three landscapes, as well as what the various village priorities were. The participatory diagnoses also provided information on what buffer zones in the National Mangrove Law and National Mangrove Strategy should be designed. As rice production involves the use of mangroves, a buffer zone and process for negotiation over rice production and restoration is necessary for the sustainable implementation of mangrove policies. The ROAM processes further enabled the landscape approach to be applied to mangrove restoration and rice field rehabilitation and to define the overall restoration strategy at a national level. Ultimately, the implementation of the ROAM tools has enabled the actors and stakeholders in mangrove restoration to move away from singular sites and to consider the landscapes as a whole.  

Establishing Local Development Plans Incorporating Restoration in South-West DRC

To further facilitate the implementation of FLR, TRI DRC worked to integrate major policies and restoration in general into the local development plans of the Kabre and Ngweshe Chiefdoms in South Kivu province. Though the local development plans were supported by GIZ without technical input from TRI DRC, the team successfully worked to add annexes to the plans that incorporate data received from the ROAM assessments and restoration caveats. Additionally, TRI DRC has also worked to integrate the Provincial Strategy for the Restoration of Forest and Landscapes in South Kivu as well as the two legal documents (one on bushfires and one on FLR) into the local development plans to help upscale restoration on the ground. These local development plans will be finalized at the end of September, 2023 and with the new inclusion of FLR, will be instrumental in the strengthening of FLR frameworks on the ground.  

TRI DRC was able to integrate the provincial strategy and legal documents as well as restoration in general into the local develop plans of Kabre and Ngweshe because of the team’s push to ensure that local policies further work to enhance and facilitate FLR and do not just leave these concepts at the regional or national level.  

Through TRI DRC’s push to integrate FLR into local development plans to help upscale restoration at the local level, the team learned valuable lessons in how broader restoration strategies and policies like the Provincial Strategy for the Restoration of Forest and Landscapes in South Kivu and the two legal documents can be incorporated at the local level to create a robust and cohesive FLR legal and regulatory structures. Additionally, TRI DRC gained insight into how restoration measures can be added to existing policies originally drafted without TRI DRC’s input. Although the plans were originally created by GIZ, with push from TRI DRC, they now promote restoration and sustainable land management in the two chiefdoms and provide for policy cohesion with wider-reaching subnational policies.  

IUCN
Creating an Operational National Platform for Forest Landscape Restoration to Support and Steer FLR
Empowering the Production of the National Forest and Landscape Restoration Plan to Inform and Guide Forest Management, Conservation, and Restoration Initiatives
Producing FLR Policy Improvement Recommendations Based on Gap Analysis of FLR Policies, Laws, and Regulations
Extension services for SLM practices through Community-based organisations

Implementing SLM practices leads to economic benefits for farmers compared to practicing business as usual. Without information and training however, the risk of reversal of the carbon storage through a change in land use during the crediting period is high. Through long-term extension services on various SLM practices, participating farmers are equipped with the knowledge they need to continue the practices throughout the whole project period and potentially beyond and are empowered to estimate consequences of different types of land-use. All participating farmers receive these bi-annual consultations throughout the whole project duration of 20 years. They are independent of their land-size which means that benefits are distributed more equitable and weaker households in terms of carbon sequestration and size even benefit disproportionally. The extension services are provided by community-based organisations, which assure the availability of the services long-term. In addition, organisations that are locally based can build stronger connections to the farmers and thus gain greater trust which is, not only but to a big part, needed to provide assistance when it comes to transferring the farmer’s rights on the stored carbon to the local coordination entity (in this case SCCS) so that it can be sold as a carbon credit.

Existing structures for extension services ease setting up the regular long-term extension services financed by the carbon revenues.  

Participation in extension services on SLM contribute significantly to implementation rates of SLM practices on smallholder farms in Western Kenya. Supporting farmer groups in the procurement of inputs such as seeds for cover crops and placing an emphasis on farmer-to-farmer approaches can increase adoption rates of SLM practices.  

Implementing SLM practices leads to an improvement of the economic performance of the smallholder farmers by increased and diversified income, compared to farmers practicing business as usual. 

Extension services on SLM as part of the carbon project should focus not only on agroforestry practices for carbon sequestration in biomass, but also carbon sequestration in soils by implementing a more diverse range of SLM practices should be promoted. They provide crucial co-benefits for the farmers by increased yields.