Jiangsu province has the most total and per capita water footprint in the Yangtze River Economic Zone, and a severe water shortage which constraints Jiangsu's economy. This paper, from the perspective of water footprint and focusing on Jiangsu's water footprint efficiency changes, analyzes their drives and provides suggestions for sustainable development of Jiangsu's water resources. Jiangsu's water footprint results from 2010 to 2019 and extended Kaya formula are used to calculate the actual water use efficiency, water resource use technical level and water footprint. LDMI-attribution model is employed to estimate the drives with contribution of three water use sectors obtained. During the study period, Jiangsu shows a noted increase in water footprint efficiency, from 32.78 RMB/m³ in 2010 to 88.91 RMB/m³ in 2019,increasing by 171.25%, mostly driven by actual water use efficiency with a contribution 167%, followed by technical level with a contribution 26.15%. Water footprint proportion in agricultural use has relatively risen, and the water footprint structure contributes -21.67% to the change. Key drives come from actual uses in industrial and living sectors, 91.19% and 75.07% respectively, with only 0.73% from agricultural sector. In technical drives, most are contributed by living sector at 21.40%, followed by industrial sector at 4.79% and then by agricultural sector at -0.04%. In water footprint structural drives, only agricultural sector is positive at 0.06%, then living sector at -2.13% and industrial sector at -19.60%. This paper presents suggestions on constructing water-saving agricultural system to increase agricultural water use efficiency and to decrease agricultural water footprint proportion, keeping a downgrade of gray water footprint, limiting high pollution investments, supporting green development, stimulating province-wide consumption, optimizing foreign trading structure and increasing sustainable development capacity of water resources.

Resource-based cities need an ecological quality developing way. This paper, in terms of CNKI's 2011 to 2020 Chinese references, uses CiteSpace to study the changes of hot research points regarding China's resource-based cities' quality development by means of visualized key word frequency with results showing "transformation", "upgrading" and "sustainable development" are the top key words, suggesting a shift in hot research points from sustainably long-term mechanism, low-carbon transformation path and modes, eco-transforming efficiency evaluation to green development. As quality development and new conception is heading its way, quality development catches much attention after 2017. This paper defines the connotation of resource-based cities' quality development from green, coordination, smart and livelihoods with objectives to ecological transformation, innovative development, smart ways and improving livelihoods. Economic quality is used to measure the urban transforming capacity. Innovative pathways to quality transformation in resource-based cities are presented from resource environment, technology, regional coordination and livelihoods. This paper concludes that construction of specific and oriented measurement will be the future research hot topics, ecological development and smart transformation is the direction. New information technology will reform the industries, ecology, management and capital supports. Smart ecological construction helps create breakthrough in resources environment, technology, regional coordination and livelihoods, favorable for resource-based cities getting out of dilemma and heading for a quality development.

This paper uses shiftshare method to analyze Panzhihua’s industrial growth and structural changes during 2003—2012, and compare it with Sichuan’s industrial structure at the same period. The results show that the first industry with less industrial growth and structural shift quota contributes less to economy, the second industry with outstanding industrial structure growth contributes much to economy, but less than Sichuan’s average. The third industry with a stronger regional competitiveness than Sichuan’s average is of great potential. This paper presents suggestions for Panzhihua in its industrial structure and economy to develop featured the first industry on agriculture, steadily develop the second industry to increase regional competitiveness and expedite the third industry on featured tourism.

A remedy of recovering all mineral resources that are overlapped by constructions is a key means to avoid resource waste. This paper discusses some projects in progress of being overlapped by highway, reservoir and urban construction, and associated strategic minerals, and presents the remedy strategy in legally recovering, a fast recovering and a boosting monitoring system against illegal mining to ensure an ordered remedy and construction.

To demarcate permanent basic arable lands is a new concept and method issued by the Third Plenary Session of the Seventeenth Central Committee. This paper macroscopically discusses the demarcation of permanent basic arable lands and presents approaches to basic arable lands construction and protection. The results indicate that the key points in demarcating permanent basic arable lands are to incorporate the large-area, quality and productive arable lands, to focus on urban area and to set up stimulant mechanism.

A sustainable development of mining industry necessitates the cycling economy. This paper, based on the traditional "3R" theory in the cycling economy, presents two more “R” principles, Rediscover and Replace, and combines them to “5R” theory, which has been applied to establish a comprehensive assessment indexes system to enhance the development of mining cycling economy.