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With acceleration of economic globalization, ecological problem becomes increasingly prominent, and forestry and forest issues become world concerns. Since 1992 United Nations Conference on Environment and Development, sustainable operation of forest becomes a subject of times, and hot issues, such as climate change, value assessment of forest resource, biomass energy of forestry, combating illegal timber and international forest problems, gradually become world concerns. This paper sum up these hot issues, analyzes background and current situations of forestry development, and discusses basic development trends of global forestry. [ABSTRACT FROM AUTHOR]

Climate change has become a global environmental issue concerned by the international community. Study on climate change has increasingly become a frontier for academics and scholars in all fields. From subjective judgment to objective measurement, CSSCI journal papers coHected from the CNKI database in 1996 - 2016 were used. With the aid of bibliometric tools, it is a new attempt to explore the development thread of domestic climate change research and recent research hot spot within the framework of the climate change subject. It found that the current problems in the field of climate change research in China are a foUows: (i) low research level and unbalanced discipline development, (ii) relatively spatially concentrated research institutions and relatively research direction, and (iii) single research perspective of the field of agricultural climate change and lack of agricultural adaptability studies. [ABSTRACT FROM AUTHOR]

This paper tries to answer the question that whether farmers can adjust better to climate change in the short-term than in long-term by using panel data models and long difference models respectively. We find that short term weather shocks are less detrimental to maize yield than the long-term climate changes, which can be seen as the evidences of adaptations. For adaptation options, we find farmers choose to decrease maize planting area or enlarge the irrigation inputs to cope with the increase of extreme heat days; when there are more precipitations, farmers will increase the input of fertilizer or labor. [ABSTRACT FROM AUTHOR]

According to spatial distribution of climate disasters in Nanning City and physiological and ecological indicator demands of sugarcane, with the aid of HJ-1 CCD satellite remote sensing images, basic meteorological data and geographic information data, this paper established the model for predicting climatic yield of sugarcane in Nanning City, to predict total yield of sugarcane in Nanning City. Results indicated that the distribution of sugarcane in Nanning City is greatly influenced by drought. In 2010, regions suffered from drought had sugarcane planting area of 346.20 km2, accounting for 18.88% of the total sugarcane planting area. The influence of frost disaster on distribution of sugarcane in Nanning City is limited. Regions suffered from frost had sugarcane planting area of only 67.1 km2, taking up 3.75% of the total sugarcane planting area. In 2010, the climatic yield of sugarcane in Nanning City was 8.8446 million tons. It proved that the prediction accuracy of the model is up to 90%. [ABSTRACT FROM AUTHOR]

Wetland ecosystem is an essential ecosystem in the world. Its organic carbon stock and carbon cycle are important basis of global carbon cycle researches and also major contents of global climate change researches. Researches have shown that wetland protection and restoration can promote carbon accumulation and reduce emission of greenhouse gases. This paper discussed influence of carbon stock and carbon balance of wetland ecosystem and emission of greenhouse gases, as well as the relationship between wetland and global climate changes. Finally, it made prospect on researches about carbon cycle of Dongting Lake. [ABSTRACT FROM AUTHOR]