What is a land trust? Land trusts conserve natural resources that keep California’s communities vibrant, enjoyable and sustainable. Rooted in local communities, land trusts work with residents, land owners and agencies to conserve natural areas, parks, and farmlands for many public benefits. These protected lands enhance the local economy, provide great educational opportunities and improve public health. California is home to more than 150 land trusts that have protected more than 2.5 million acres.