Research Progress of Forest Land Nutrient Management in China

Abstract

Forest land fertilization is a supplement and regulation method based on the regular pattern of forest physiological activity and nutrient demand, combined with the ability of soil to supply nutrient elements. We summarized the important achievements and influential events of forest land fertilization and nutrient management in modern times, and discussed the main problems of forest land fertilization at this stage. The main theories of comprehensive nutrition diagnosis method, formula fertilization method, site nutrient effect fertilization model, and ASI-based balanced fertilization method were analyzed. The main scientific research institutions, main tree species, and main research results of forest fertilization research are described. The development trend of the comprehensive nutrition diagnosis method, the combination of forest fertilization theory and environmental ecology principle, the combination of fertilization and forest oriented cultivation goal, the application of precise fertilization technology in forest land, the development of new forest specific fertilizer, the research of plant nutrition molecular genetics, the research of root state and rhizosphere microecosystem, the application of advanced technology and technology, and the development and application of new nonpollution fertilizer were discussed. It is an important research direction to apply the existing research results to forestry production and improve the quality.

Passengers' likely behaviour based on demographic difference during an emergency evacuation in a Ro-Ro passenger ship

“…The global passenger ship market has become large-scale, and the passenger capacity has been gradually increasing in recent years (Li and Cai, 2019;Vanem and Skjong, 2006).…”

“…In 2016, after many revisions and additions, the Maritime Safety Committee (MSC) approved the "Revised guidelines on evacuation analyses of the new and existing passenger ships" at its 96th session as part of SOLAS Convention II-2/13.3.2.71. This revision made evacuation analysis mandatory not only for Ro-Ro passenger ships but also for other passenger ships constructed on or after January 1 st , 2020 (Li and Cai, 2019;IMO, 2016).…”