Comprehensive content——the research achievements in China on the source, pollution characteristics, and spatio-temporal changes of air pollutants such as PM_2.5, volatile organic compounds (VOCs), ozone, sulfur dioxide, and nitrogen oxide;

Abundant cases——successful technologies and experiences of air pollution prevention and control in key areas of China like the Beijing-Tianjin-Hebei, Yangtze River Delta, and Pearl River Delta. For example, the hierarchical cross–regional multi–directional linkage (HCML) air pollution prevention and control model decreased the annual average concentrations of PM_2.5, PM₁₀, SO₂, NO₂, and CO in Beijing-Tianjin-Hebei by 17.84%, 14.61%, 37.55%, 4.82%, and 16.18%, respectively. The index of agreement of the established real-time forecasting system of PM_2.5 concentration on the test site reaches higher than 0.9.

The latest progress in the basic properties and preparation processes of composites in China, such as the proceeding of graphene reinforced aluminum matrix nanocomposites; the current study on magnesium matrix composites enhanced by carbon nanotubes, graphene, and SiC; and the performance of cellulose nano-fibril/nano-silicon dioxide composites prepared by mimicking the fast paper-making method;

Application examples of composites in different fields. For example, C/C-SiC composites for nozzle inner of solid propellant ramjet prepared by using the hybrid process of “chemical vapor infiltration + precursor impregnation pyrolysis” has the flexural strength and hydraulic bursting pressure of 197 MPa and 6.5 MPa, respectively. Ge nanoparticles are synthesized uniformly on MXene sheets via a one-step chemical solution method and applied in lithium-ion batteries, which increased the capacity to 1200 mAh/g during the first hundred cycles at 0.2C with a loading of 1 mg/cm².

Research progress in characteristics, formation mechanisms, and risk assessment of natural disasters in China, such as city seismic resilience evaluation and basic paradigm of risk analysis in flood disaster and its application.

Effective disaster mitigation measures in early detection, monitoring and warning, and emergency response of natural disasters. For example, the multi-source system cloud service platform for landslide monitoring issued a long-term forecast 45 days in advance of the “2016-1101 landslide” of the open pit iron mine, a medium-term forecast 30 days in advance and a sliding disaster warning 4 hours ahead to the whole mine in Nanfen. An integrated space-air-ground investigation system is proposed for the early detection, real-time prediction, and warning of catastrophic geohazards, which has been widely applied in Guizhou, Sichuan and other places in China.

Comprehensive content——the latest research achievements in China on the sources, migration patterns, residue characteristics, and health/ecological risks of soil pollutants such as heavy metals, pharmaceuticals and personal care products, polychlorinated biphenyls, and fluorides;

Abundant cases——successful technologies and experiences of soil remediation in key regions of China like Beijing-Tianjin-Hebei region, Yangtze River Delta, and Pearl River Delta. For example, the mixture leaching technology was used to remediate As-contaminated soil, and the removal rate of As reached 91.83%; sulphur and actinomycete were added to enhance the efficiency of phytoremediation in Cd-contaminated soil, and Cd accumulation in plant shoot increased 79%.

Current status and development direction of oil and gas development of Sinopec, CNPC and CNOOC

China's first deep-water submerged natural gas exploration breakthrough

Successful experience of commercial development of shale gas in China, not least important exploration technologies such as seismic waveform inversion thin reservoir prediction technology, small sample convolutional neural network technology for seismic oil and gas reservoirs, ultra-deep well superior fast drilling technology and support vector machine lithology identification method;

Great achievements have been made in oil and gas field of China: The coincidence rate of lithology identification and practical coring data reaches 81.9% based on continuous restricted Boltzmann machine and support vector machine; The average drilling time for these wells was 173.42 d, which was 14.73% shorter than before with the fast drilling technology for ultra-deep wells in the Shunbei Oilfield.

Comprehensive content——the research achievements in China on the source, distribution, morphology, and health/ecological risks of a series of water pollutants such as heavy metals,polycyclic aromatic hydrocarbons and antibiotics;

Abundant cases——successful technologies and experiences of water pollution prevention and control in key basins of China like Yangtze River Delta, Yellow River, and Poyang Lake. For example, by adjusting influent carbon/nitrogen ratio to optimize the denitrifying phosphorus removal characteristics of the A2/O-BCO process, COD, TN and PO_4~(3-)-P removals reached to 88%, 80% and 96% respectively; the struvite pellet crystallization technology was used to recover phosphorus from sludge liquor, and the recovery efficiency of PO_4~(3-)-P reached 85%.

Current status and development strategy of shale oil exploration and development in China, such as practice and status of shale oil exploration in Jiyang Depression, and progress of shale oil and gas reservoir characterization technology.

Geological characteristics and distribution of shale oil and gas in China, such as the inhibition model of high-pressure hydrocarbon evolution, the molecular geochemical evaluation parameter model of shale oil motility, the qualitative—semi-quantitative evaluation system of shale gas content.

Development of shale gas and fracturing technology in China, such as physical simulation test and fracture extension pattern analysis of horizontal shale wells, water-based drilling fluid technology of horizontal shale gas wells, and key technology of deep shale gas drilling.

Outstanding application results and successful practice have been achieved: With six key technologies suitable for the exploration & development of Weiyuan shale gas reservoirs, the main production zone in the Long 1¹¹ member has a reservoir encountering rate of 98%, the drilling cycle is shortened to 69.2 days, the test output reaches 19.7×10⁴ m³/d, and the final recoverable reserves per well is up to 10482×10⁴ m; With key drilling technologies for deep shale gas reservoirs, the rate of penetration of Well JY74-2 HF was increased by 73.48%, the drilling cycle was shortened by 42.89%, the rate of penetration of Well JY187-2 HF was increased by 37.26%, and the drilling cycle was shortened by 25.79%.