In Hendy Woods State Park, one of the parks slated to be closed.
A point of criticism for the media in general: these articles rarely say what it would mean to "close" the parks. I have a lot of respect for journalists who knock on politicians' doors and ask hard questions, and even saying that they asked but didn't get an answer would be an improvement for most of these articles (there's no discussion of what "closed" means in this one either.)
If you want to write your representatives, I included the text of the letter I sent here. Notably, if you live in northern San Diego, then both your state senator and representative (Christine Kehoe and Nathan Fletcher) are running for mayor of San Diego. Make it clear to them that how they vote on the parks issue will affect whether you vote for them for mayor.