However， due to the complexity and heterogeneity associated with the architectural components of biochar， the improvement effect of biochar on saline-alkali soil is extremely unsure， and there is additionally a lack of systematic summary and detailed discussion regarding the crucial components， which restricts the further popularization and application of biochar technology within the enhancement of saline-alkali earth. This research comprehensively analyzed the aftereffects of biochar on physicochemical properties， nutrient availability， and biological characteristics of saline-alkali soil； summarized the enhancement aftereffects of biochar and modified biochar on saline-alkali soil and their particular results on high quality and efficiency； and elucidated the possible procedure of biochar in the improvement of saline-alkali soil. The long run research prospect of biochar had been discussed in order to provide reference for further study and growth of green， efficient， and accurate improvement technology of biochar in saline-alkali soil and its own popularization and application.The aftereffects of biochar application on soil nitrous oxide （N2O） and methane （CH4） emissions in a normal rice-vegetable rotation system in Hainan after two years had been examined. The goal would be to clarify the lasting results of biochar on greenhouse fuel emissions under this design， and it offered a theoretical basis for N2O and CH4 emission reduction in rice-vegetable rotation systems in tropical parts of Asia. Four remedies had been establish into the field experiment， including no nitrogen fertilizer control （CK）； nitrogen， phosphorus， and potassium fertilizer （CON）； nitrogen， phosphorus， and potassium fertilizer along with 20 t·hm-2 biochar （B1）； and nitrogen， phosphorus， and potassium fertilizer coupled with 40 t·hm-2 biochar （B2）. The outcomes showed that： ① compared to that in the CON treatment， the B1 and B2 remedies considerably paid off N2O emissions by 32% and 54% in the early rice season （P < 0.05， equivalent below）， however the B1 and B2 remedies significantly increased N2O emissions by 31% in which he GHGI and reached a significant level. However， the B1 and B2 treatments somewhat Jammed screw reduced GHGI during the early rice season and pepper season， and just the B2 treatment increased GHGI into the late rice season. ④ compared to that in the CON treatment， the B1 and B2 treatments significantly enhanced the yield of early rice by 33% and 51%， additionally the B1 and B2 remedies somewhat enhanced the yield of pepper season by 53% and 81%. Into the late rice season， there was no significant difference in yield with the exception of in the CK treatment without nitrogen fertilizer. The results indicated that the magnitude of greenhouse gasoline emissions in the tropical rice-vegetable rotation system was mainly dependant on CH4 emissions within the late rice period. After 2 yrs of biochar application， only reasonable biochar combined with nitrogen fertilizer had a substantial emission reduction effect， but high and low biochar along with nitrogen fertilizer enhanced the yield of very early rice and pepper plants continually.Coastal wetlands are important carbon basins， and they contribute to reducing the results of worldwide warming. This research used the eddy covariance way to detect the CO2 flux within the repair wetland of this Liaohe River estuary in 2021 and research the attributes of ecosystem CO2 exchange and its own environmental control elements. The goal would be to gauge the carbon source/sink ability of sodium marshes into the restored area also to provide data support and theoretical foundation for evaluating the potency of environmental restoration tasks. The analysis revealed “U” curves in spring and autumn， “V” curves during the summer， and horizontal lines in winter season when it comes to typical day-to-day difference curve of web ecosystem CO2 trade （NEE） into the restored location. Its carbon sink efficiencies were -40.06， -63.62， 2.33， and 34.43 g·m-2 when you look at the read more spring， summer， autumn， and wintertime， respectively. Into the restored area， the daily collective difference in NEE was “V” shaped， and also the monthly cumulative alterations in NEE， ecosystem respiration （Recoestration ended up being -66.89 g·m-2. The restored salt plays a role as an important carbon sink and contains long-lasting carbon sequestration possible.Based in the typical city study data and statistics of Guangdong Province， a 2018-based 3 km×3 km gridded greenhouse gas emissions inventory originated for Guangdong Province utilising the combination of top-down and bottom-up emission aspect techniques. The inventory covered the CO2， CH4， and N2O emissions from power， industrial processes， agriculture， land use modification and forest， waste administration， and indirect resources medication-induced pancreatitis . The outcome indicated that quotes for CO2， CH4， and N2O in Guangdong Province when it comes to 12 months 2018 were 8.5×108， 1.9×106， and 1.1×105 t， respectively， and 8.5×108， 4.0×107， and 3.4×107 t by comparable carbon dioxide， totaling 9.2×108 t. CO2 ended up being the key greenhouse gas in Guangdong Province， accounting for 92.0% associated with total emissions. Energy and indirect resources were the key emission sources， accounting for 77.9% and 7.6%， respectively， totaling 85.5%. Spatial distributions illustrated that many grids had been greenhouse gas emissions， whereas some other people had been greenhouse gas sinks； the greenhouse gasoline emissions were distributed primarily in the Pearl River Delta area together with specific qualities of circulation along the roadway network and channels.