/ Cap and Trade Content for UC Davis en /climate/news/grasslands-more-reliable-carbon-sink-than-trees Grasslands and rangelands are more resilient carbon sinks than forests in California due to wildfire risks and climate change, a UC Davis study found,. This has implications for the cap-and-trade market. July 09, 2018 - 2:36pm Katherine E Kerlin /climate/news/grasslands-more-reliable-carbon-sink-than-trees