First-year anniversary at SUPERB’s Po Valley Demo  

In the municipality of Legnano, the first restoration plot of SUPERB’s Po Valley Demo is celebrating its first-year anniversary. The team has divided the land here into 12 different stands to experiment with different densities of tree and plant cover (1500, 2000, and 2500 p/ha).  

Po Valley is one of Italy’s most important economic regions, in which agricultural and urban developments have gradually led to forest reduction and fragmentation. As biodiversity is increasingly under pressure, SUPERB aims to restore approximately 10 hectares of land in the administrative area of Lombardia. The aim here is to introduce biodiverse-rich, small patches of forest, as well as enhance ecological connectivity by planting trees, bushes, and hedges.  

Aside from this very first plot of land, the team has started to expand their restoration efforts across new municipalities: 

“It was close to impossible to find a continuous 7 ha patch so close to Milan, therefore, this year we will plant trees in 4 separated plots in 3 different municipalities”, says Michel Saini, project coordinator of the Po Valley Demo.

The restoration efforts were thus divided over the municipalities of Inveruno, Villa Cortese and Vittuone, with a total cover of 9 hectares of land. With plant species from Northern Italy, Central Italy and Southern Italy, the team is specifically dedicated to the study of genetic provenance, planting 3 different strands in each of the 4 areas. This means that they will actively explore how the different plant species, native to the above-mentioned regions, adapt to their new environmental conditions. 

In collaboration with the University of Trento, the team will also test the benefits of hydrogel for the survival of small saplings.  

“We will implement a layer of hydro-retentive gel at the bottom of the planting hole, with two main variables” explains Michel Saini, “one is control, irrigated by rain only, and the other is regularly irrigated saplings”.  

At the same time, the project focuses on several other studies, including: 

  • A focus on monitoring of zoonotic disease by monitoring and estimating the mosquitos and ticks’ population with traps. It’s a study in collaboration with Fondazione Edmund Mach

  • Studies on the effects of reforestation of former farmland on soil ecosystem services within Parco Nord Milano. The evaluation of reforestation effects is thus carried out through 3 indicators related to soil characteristics: Carbon stock, water regulation and soil biodiversity.

  • The monitoring of pollinators in the meadows close to the chrono sequences sites with the aim of studying the change in urban biodiversity after afforestation. This is a collaboration with the University of Milan – Bicocca 

  • The analysis of the contribution of vegetation in mitigating the urban “Heat Island Effect” with physical sensors. 

Stay tuned for more information!