I dont like the sound of donating the land.. keep it, your family will need it one day
but nature dont have buraucracy
Is there any ponds there? One of the first things to do is to reopen ponds that has been filled. Or to create new ones.. it helps a lot on every aspekt of biotops.
Some water running thru? get a micro powerplant, sell the electricity to the grid.. do it in balance with nature, let fish get past it, dont wreck to much while constructing.
Greenhouses, you can grow anything in greenhouses. With increasing food prices it will pay of in the long run. And you may grow organic, making your food more rich and healthy.
Grow beans and peas, easy to maintain, just stick it in the ground,, harvest a month later. Ads nitrogen to the ground in a natural way.
Fruit trees and bushes, if you are planting trees, why not fruit. Added benefit for you, and animals if you are not there to harvest. Fruit bushes and trees are for fre, just cut branches from a garden in early spring, stick them deep in ground. It will grow!
Plant trees who are more adopted to hotter climate. Global warming means nature has to move north and up. Help it by planting ambasadours of the species. A more waried forrest is also good. Monoculturers are bad.
Cut the grass on midsummer after flowers have blossomed, let it lay on ground to dry before removing it so seeds can drop. It will favourite a variety of plants and flowers. Insects and many other animals needs this.
Give it to me if you dont have the time for this ,-D