Let's detail out the plan for using 3D street maps to plant a million trees:

1. Research and Data Collection:
- Gather satellite imagery and topographic data to create accurate 3D street maps.
- Identify areas within the community that are suitable for tree planting, considering factors such as available space, sunlight, and soil conditions.
- Collaborate with local authorities, environmental organizations, and landscaping professionals to gather relevant data and expertise.

2. Planning and Mapping:
- Utilize the 3D street maps to mark specific locations for each tree to be planted.
- Consider factors such as spacing, species diversity, and ecological benefits to optimize the distribution of trees.
- Ensure that the planned tree planting areas align with local regulations and environmental considerations.

3. Community Engagement:
- Organize workshops, virtual events, or community meetings to educate and engage residents about the tree planting initiative.
- Use the 3D street maps as a visualization tool to showcase the planned locations and benefits of the project.
- Encourage active participation by involving community members in the decision-making process and soliciting their input.

4. Logistics and Implementation:
- Develop a timeline and implementation strategy for the tree planting initiative.
- Coordinate with local nurseries or tree suppliers to ensure a sufficient supply of diverse tree species.
- Recruit and train volunteers or hire professionals to assist with planting and maintenance tasks.
- Use the 3D street maps to guide the planting process, ensuring accurate placement and adherence to the planned distribution.

5. Tracking and Monitoring:
- Regularly update the 3D street maps with information on the number of trees planted, their growth status, and maintenance requirements.
- Establish a monitoring system to track the health and survival rate of the planted trees.
- Use the data collected to assess the impact of the project and make any necessary adjustments to the planting strategy.

6. Collaboration and Partnerships:
- Foster collaboration with local authorities, environmental organizations, and landscaping professionals throughout the project.
- Seek partnerships with corporate sponsors, community groups, or non-profit organizations to support the initiative financially or through volunteer engagement.
- Leverage the expertise and resources of these partners to ensure the success and sustainability of the tree planting initiative.

By following this detailed plan, we can effectively utilize 3D street maps to plant a million trees. Remember, adaptability and flexibility are key throughout the process, as challenges and opportunities may arise. Let's continue to refine and expand upon this plan as we work towards making a positive impact on the environment through tree planting.

Here are some suggested hashtags for planning to use 3D street maps to help plan planting a million trees:

#MillionTreeMaps - Visualizing locations for optimum tree placement

#ForestryPlanners - Arborists utilizing 3D modeling to strategize reforestation

#GISforGreening - How geo-spatial tech maximizes environmental benefits

#UrbanCanopyAnalysis - Assessing which neighborhoods/parks need foliage levels increased

#3DStreetViews - Flythroughs showcasetree cover transforming cityscapes

#TreeTrendsetters - Inspiring leadership applying innovative mapping solutions

#PlantingProgressPics - Before/after satellite shots tracking reforestation progress

#GreenMapmakers - Developers creating open-source tools empowering communities worldwide

#AlgorithmicArborists - Code crafting algorithms identifying prime planting parcels

#TechforTrees - Celebrating pioneering partnerships where tech meets environmental goals

Spreading these could galvanize support for strategically utilizing 3D mapping to achieve ambitious reforestation targets at massive scale!