Image

Linking Planet imagery with a plantation monitoring system

9 November 2020

One benefit of high-revisit satellites is their ability to re-image the same location daily or weekly. In this example, we use temporal satellite observations (2016 to 2020) to track drought impact, using PlanetScope imagery to confirm the change.

Working with Scion’s Geomatics team, Indufor has extended the science and developed a monitoring approach that can be used to link satellite imagery with environmental surfaces. The particular method illustrated correlates long-term rainfall trends with satellite imagery to extract key breakpoints or thresholds that flag sustained changes in canopy cover. The monitoring system generates an ‘alert’ where canopy deterioration exceeds a pre-determined benchmark.

By way of illustration, a graph highlighted in the article here plots the vegetation index (green line) and rainfall records (blue bars) over a four-year period, across a single stand. The inclusion of rainfall data assists in explaining the temporal patterns and highlights the corelation between the satellite-derived vegetation index and monthly rainfall. For reference, the dotted line shows Indufor’s Canopy Index baseline, which for this particular stand helps to highlight the difference between the expected and actual canopy condition value.

Such an approach demonstrates the benefits of using temporal information from satellite imagery and environmental data as a screening tool. In the past, such areas may remain unnoticed unless re-mapped or visited. The appeal of the method demonstrated is that it provides a scalable monitoring solution. As alerts are created, they are synchronised to mapping dashboards using a process that provides an efficient way of sharing information across an organisation. More >>.

Source: Indufor

Read More
Image

New tool to manage forestry slash

Better management of forest felling waste has gained new impetus in Cyclone Gabrielle’s wake, with the sector firmly in the spotlight for the impact such waste has had on communities, ecosystems, and farmland downstream from harvest areas. Rotorua-based forest management ...
Read more
Image

New multi-species carbon calculator available

A new multi-species carbon calculator developed by Mark Kimberley and Michael Watt to support grower decision-making is freely available on the Forest Growers Research website ( Multi-Species Carbon Calculator (fgr.nz)). The calculator predicts growth metrics for eleven species that include ...
Read more
Image

JOUAV unveils advanced airborne Lidar sensor

JOUAV has released the JoLiDAR-1000 Lidar sensor designed specifically for uncrewed aerial vehicles (UAVs or ‘drones’) as the latest addition to its array of high-performance Lidar sensors for use in UAV applications such as GIS, surveying and precision powerline inspections. ...
Read more
Image

Wingtra debuts pioneering Lidar drone solution

Wingtra has unveiled its innovative Lidar-drone solution. The new Lidar payload is designed to seamlessly integrate the efficiency, ease of operation, and high accuracy of the WingtraOne GEN II drones with an advanced Wingtra-engineered Lidar sensor, offering notable advancements in ...
Read more
Image

Trimble and DroneDeploy improved UAV mapping

Trimble has unveiled the integration of the Trimble Applanix POSPac Cloud post-processed kinematic (PPK) GNSS positioning service, featuring CenterPoint RTX, with the UAV-based mapping and data collection capabilities of DroneDeploy’s reality capture platform. With the Trimble cloud positioning service, DroneDeploy ...
Read more
Image

Blue gum expansion & mechanised planting planned

Australia’s dwindling timber reserves could be exhausted in less than a decade, but industry experts are hoping a new native nursery in Western Australia could help ease the pressure. In the coastal city of Albany, 450 kilometres south of Perth, ...
Read more