A more recent estimate by Dr Nisbet and colleagues puts the contribution at 45%.

Nisbet 博士及其同事最近估计，这一贡献为 45%。

Nisbet added that the newer satellite technology and on-the-ground research make it easier for researchers to identify " who is polluting the world."

内斯比特还说，更新的卫星技术和地面研究使研究人员更容易确定“是谁在污染世界”。

If those data support Dr Nisbet's hypothesis, and a warming world really is producing more and more methane, that would raise several uncomfortable questions.

如果这些数据支持尼斯贝特博士的假设，并且全球变暖确实正在产生越来越多的甲烷，那么就会引发一些令人不安的问题。

Even as delegates to the COP28 climate conference consider ways to cut human methane emissions, Dr Nisbet worries that the Earth's natural systems may be churning out more and more of the gas.

尽管 COP28 气候会议的代表们正在考虑减少人类甲烷排放的方法，尼斯贝特博士还是担心地球的自然系统可能会产生越来越多的甲烷。

" This new work shows just how important it is to manage landfills better, especially in countries like India where landfills are often on fire, emitting a wide range of damaging pollutants, " said Euan Nisbet.

尤安·内斯比特说：“这项新研究表明，更好地管理垃圾填埋场是多么重要，尤其是在像印度这样的国家，那里的垃圾填埋场经常着火，释放出各种有害的污染物。”