Thawing permafrost mobilizes concerning amounts of carbon into the wider environment. Piecing together carbon sources and sinks in this complex system is important to understanding its overall climate impact.

中文翻译：

---

冻土融化时

融化的永久冻土动员了相当数量的碳进入更广泛的环境。在这个复杂的系统中将碳源和碳汇汇合在一起对于理解其总体气候影响非常重要。