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。
The grassland agricultural ecosystem, including the primary production system, the second production system, social system and so on, is the biggest among the terrestrial ecosystems.
草地生态系统是最大的陆地生态系统，包括草地植物生态系统、动物生态系统和人类社会系统等子系统。
For forest, grassland and river ecosystems, phreatophyte should be applied to, promoting the primary succession of the ecosystem.
对于森林、草地、江河等自然生态系统，植被选择应以原生种类为主，以促进生态系统进行原生演替；
Model are also used in grassland grazing systems, which are an important part of ecosystems.
草地放牧系统作为生态系统重要组成部分，对其研究自然也离不开模型的应用。
Model are also used in grassland grazing systems, which are an important part of ecosystems.
草地放牧系统作为生态系统重要组成部分，对其研究自然也离不开模型的应用。
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