Abstract
Grassland is the second green cover layer on the land surface of the earth after the forest. Grassland is not only a substantial production base of animal husbandry, but also plays a vital role in biodiversity protection, climate change, and human sustainable development. With the increasing impact of climate change and human activities on the grassland ecosystem, more and more attention has been paid to the degradation of the grassland ecosystem. The study of grassland ecosystems is of great significance. Based on previous studies, this paper summarizes the research progress of the grassland ecosystem in China in recent years from five aspects: (1) vegetation, (2) soil, (3) hydrology, (4) climate, and (5) soil animals. On this basis, the critical research direction in the future is put forward. The purpose of this paper is to provide references for grassland protection and effective utilization.
