Charting the Above-ground Biomass and Spatial Distribution of China's Herbaceous Marsh Plants
In a recent study, a team of researchers led by Shen X, Jiang M, Lu X, and others, conducted a comprehensive survey of the conditions of plant, water, and ecological benefits in 440 wetland patches across China. The study, published in Science China Earth Sciences with the DOI: 10.1007/s11430-020-9778-7, provides valuable insights into the carbon sequestration and aboveground biomass of China's herbaceous marshes.
The study reveals that herbaceous marshes are the most widely distributed among all the types of marshes in China, covering an area of approximately 9.7 × 104 km2. The total area of marshes in China ranks third in the world, following behind the United States and the Russian Federation.
The research also sheds light on the carbon reserves of wetland ecosystems, which account for 12-24% of the global land carbon reserves. Aboveground biomass of vegetation is a crucial index for estimating the carbon storage of marsh vegetation, and the study found that the average aboveground biomass density of China's herbaceous marsh vegetation was about 227.5 g C m-2.
The study further investigates the aboveground biomass and its spatial distribution pattern of herbaceous marsh vegetation in China. The biomass spatial distribution of herbaceous marsh vegetation has non-zonality characteristics and shows a certain zonality law in some regions. In the temperate humid and semi-humid region, the aboveground biomass of herbaceous marsh vegetation is relatively larger in warmer regions. In contrast, in temperate arid and semi-arid regions and temperate humid and semi-humid regions, the aboveground biomass decreases with the aggravation of drought.
The institutions involved in the collection of aboveground biomass from meadows in China included the Institute of Botany, Chinese Academy of Sciences, and the project supporting the survey was named the "National Key Basic Research Program of China."
The study provides a scientific basis for carbon sequestration evaluation and adaptive management of marsh wetland in China. As the research on carbon sequestration of wetland has become an important subject of global carbon cycle research, this study is a significant contribution to the field. The findings of this study will undoubtedly contribute to the understanding and management of wetland ecosystems in China and beyond.
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