Ecosystem element balance has been a main focus of global change ecology and biogeochemical cycle research.

生态系统元素平衡是当前全球变化生态学和生物地球化学循环的研究热点和焦点。

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Annual net primary productivity (NPP) of terrestrial vegetation is the net amount of carbon fixed by plant photosynthesis. NPP is an important index in global change ecology.

植被的净第一性生产力(NPP)反映了植物每年通过光合作用所固定的碳总量，目前NPP研究是全球变化研究的重要内容之一。

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Dr Montira Pongsiri, an environmental health scientist at the EPA, told the Independent: “We appear to be undergoing a distinct change in global disease ecology.

美国环境保护署环境健康科学家Montira Pongsiri博士告诉《独立报》（Independent）：“我们似乎正在经历全球疾病生态学的明显变化。

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The real challenge is figuring out whether a particular storm or flood was due to climate change or natural variables, said Chris Field, founding director of the Carnegie Institution's Department of Global Ecology.

CNN: Extreme weather: Get ready to see more of it, scientists say