保护陆地生态系统是我们的责任。

It is our responsibility to protect the terrestrial ecosystem.

陆地生态系统的健康对人类至关重要。

The health of the terrestrial ecosystem is crucial for humans.

陆地生态系统包括森林、草原和沙漠。

A terrestrial ecosystem includes forests, grasslands, and deserts.

科学家们正在研究陆地生态系统的多样性。

Scientists are studying the diversity of the terrestrial ecosystem.

气候变化对陆地生态系统产生了重大影响。

Climate change has had a significant impact on the terrestrial ecosystem.

森林是陆地生态系统的主体.

Forest is the main body of terrestrial ecosystem.

酸雨对陆地生态系统的危害日益严重.

Acid deposition has serious damaged the terrestrial ecosystems.

叶面积指数（LAI）是描述在陆地生态系统植被冠层结构的一个重要参数。

Leaf area index (LAI) is an important parameter for describing vegetation canopy structure in the terrestrial ecosystem.

植物根系活动和测定方法是研究陆地生态系统土壤呼吸的重要影响因素。

Plant root activities and measuring methods play a key role in the study of soil respiration in the terrestrial ecosystem carbon cycle.

森林是陆地生态系统的主体，是维护国土生态安全的屏障，是经济社会可持续发展的战略性资源。

Forest is the main terrestrial ecosystem, the maintenance of land ecological safety barrier and strategic resources for economic and social sustainable development.