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Non‐native, invasive Bromus tectorum (cheatgrass) is pervasive in sagebrush ecosystems in the Great Basin ecoregion of the western United States, competing with native plants and promoting more frequent fires. As a result, cheatgrass invasion likely alters carbon (C) storage in the region. Many studies have measured C pools in one or more common vegetation types: native sagebrush, invaded sagebrush...
The role of mangroves in the blue carbon stock is critical and requires special focus. Mangroves are carbon‐rich forests that are not in steady‐state equilibrium at the decadal time scale. Over the last decades, the structure and zonation of mangroves have been largely disturbed by coastal changes and land use conversions. The amount of time since the last disturbance is a key parameter determining...
Biochar is a solid residue produced from pyrolysis, which is the heating of biomass in the absence (or near absence) of oxygen. The use of biochar can potentially aid in mitigating climate change through carbon sequestration and improve soil quality by the addition of nutrients, increased water holding capacity and providing a liming effect in soils. The physical and chemical properties of biochars...
Biochar offers a potentially scalable option for achieving negative carbon emissions. The photosynthetic fixation of atmospheric carbon into biomass, followed by carbonization of plant biomass into stable biochar which is then added to soil, results in a reversal of the normal flow of carbon from man-made systems. In addition, these systems can provide economic benefits, such as enhancement of soil...
In this paper we present a study on the estimation of the aboveground biomass in tropical forests at single tree level using airborne laser scanning (ALS) data. Individual tree crowns (ITCs) are firstly detected using a method based on an adaptive window that change its size according to tree height. The diameter at breast height (DBH) and the aboveground biomass (AGB) of each ITC then are predicted...
Carbon plays an essential role in the environment for climate change. The presence and absence of carbon directly affects all living beings. Trees inhale carbon for giving us oxygen. The environmental study of carbon is a major concern these days. Carbon Dioxide is stored in different five carbon pools of forest. Many countries are innolved in the research of environmental factors these days. The...
We studied on microbial activity in wetland soils of dry lake of Hui Teng xi le in semi-arid steppe with the reference of typical steppe in semi-arid areas. Microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), basal respiration (BR), potential respiration (PR), microbial quotient (qMB), and metabolic quotient (qCO2) of soils were used to survey microbial activity. The results showed that:...
Above-ground tree biomass was estimated for the low-land forests of Taman Negara, Pahang. Five transect lines measuring at 100 × 20 m of each were established for this study. The transect lines consist of a total of 439 trees. The tree height and the diameter at breast height (DBH) of all trees (≥ 10 cm) were measured in each transect line. Kato et al. (1978) function was used to estimate the three...
The study on the soil organic metter, microbial biomass, C and N of meadow grassland under the different condition of grazing intensity, showed that the different condition of grazing intensity has an effect on the soil organic metter, microbial biomass, C and N, the soil organic metter in the area of fence and light grazing higher than that of moderate and heavy grazing(P<0.05), the soil...
The approach to biochar carbon sequestration from crop residues and forestry wastes offer a possibility to turn biomass management into a carbon-negative industry, by right of its long storage time and high carbon content in plant biomass. This approach is under development and is currently considered as an attractive candidate for inclusion in the global carbon market. This paper analyzes the necessity...
Spruce (Picea asperata) is a special species of China, it is the main tree building species of high mountains in Sichuan, and plays an important role in the restoration of degraded ecosystems in sub-alpine areas in western China. In this study, impacts of different rotation lengths on carbon storage over 480 years were simulated using the ecosystem Model FORECAST for spruce, FORECAST_SPRUCE. Four...
The community of wasteland, secondly shrub, Pinus yunnanensis forest, Alnus nepalensis forest, mature Pinus armandii forest, half-Mature Pinus armandii forest and mixed forest were selected to analyze the carbon-sink function by establishing recursive trees regression biomass model with different components contain the biomass of forest, stick defoliation reserves and soil carbon. It is indicated...
Under submerged incubation with different herbicides (Quinclorac, Pyrazosulfuron) dynamics of soil microbial activity and biochemical characteristic in a waterlogged paddy soil were studied. Show soil basal respiration was significantly enhanced during the training besides at first day. soil microbial biomass carbon and nitrogen were significantly control, however, soil microbial phosphorus was enhanced‥
Surface soil samples (0∼20cm) were collected from a Calamagrostis angustifolia freshwater marsh in the Sanjiang Plain from May to September and soil active organic carbon including microbial biomass carbon (MBC), easily oxidizable carbon (EOC), dissolved organic carbon (DOC) were analyzed aiming to reveal their seasonal dynamics characterisitics and their correlationships with activities of soil invertase,...
We reported the carbon stocks, the distribution of carbon stocks of vegetation biomass among functionally distinct pools between 2004 and 2009, for the main forest ecosystem, Platycladus orientalis plantations in Beijing, China. We then evaluate the carbon accumulation of the forest ecosystem. Our results indicated that total carbon stocks of vegetation biomass ranged from 49.3–61.2 t C/hm2, of which...
A deep treatment on purification of effluent of second treatment for rural domestic sewage in Chongming-Island by enhanced ecological floating raft was performed. Microbial biomass carbon, nitrogen and phosphorus in fiber padding of enhanced ecological floating raft was measured using the chloroform fumigation incubation method, and variation characteristic of the microbial biomass content in time...
The greater hinggan mountains in China is the green treasure, containing enormous economic, ecological and social benefits. However, due to the years of unreasonable deforestation structure, gradual degradation of the forest function and forest ecological environment hinders the mountains' development. Speed up constructing the mountains' ecological function areas becomes the primary task of promoting...
20 tree plots, 60 shrub plots, 100 grass plots and 100 litter plots were established in Central Tianshan Mountain to study the biomass and carbon storage of P. schrenkiana var. tianshanica - A. millefolium community, P. schrenkiana var. tianshanica - S. pohuashanensis community and P. schrenkiana var. tianshanica - S. pseudosabina community. Results showed that: (1) Biomass of above ground and below...
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