Researchers transplanted vegetation from four grassland ecosystems to lower, warmer elevations.
研究人员将四个草场生态系统的植被移植到海拔较低、较温暖的地域。
Some major characteristics of the carbon cycle in grassland ecosystems were summarized, and a carbon cycle compartment model was introduced as well;
概述了草地生态系统碳素循环的一般特征，介绍了一个草地碳循环的分室模型；
The study examined the total contents of soil organic carbon and the content of soil active organic carbon and stable organic carbon in farmland, grassland, scrub and forest ecosystems.
本研究分析了子午岭林区农田、草地、灌丛和森林不同生态系统土壤总有机碳、活性有机碳和稳定性有机碳含量。
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