This paper estimates the carbon stock and values of Beijing's forest resources, and forecasts forest carbon stock and carbon sink potential, and provides references for Beijing national forest city construction, realization of carbon neutrality goal. This paper, based on Beijing's forest survey data from 1973 to 2018, uses forest volume method to estimate the total carbon storage and changes of Beijing's forest resources, measures the carbon storage and value of different forest types, and applies GM(1, 1) grey model and power function model to forecast the carbon sink potential of Beijing's forest resources. Beijing's unit forest stock volume has been 29.98 m³/hm² over four decades, far below the nation's average of 73.56 m³/hm², leaving room for increment. The total carbon storage increases to 34 765.1 kt from 5 718.0 kt with a yearly rising rate 691.6 kt, of which forest carbon storage increases to 11 577.5 kt from 1 018.8 kt with a yearly rising rate 251.4 kt. Forest carbon  density increases to 16.12 t/hm² from 5.09 t/hm², far below the nation's average of 41.50 t/hm². Forest carbon storage value increases to 1 430.886 1 million Yuan in 2018 from 67.066 6 million Yuan in 1976 by a yearly rising rate 32.471 9 million Yuan, amounting to a compound yearly rising rate 7.56%, of which artificial forest carbon storage value has a yearly rising rate 13.70%. Beijing's forest carbon storage is forecasted to be 22 556.9 kt by GM(1, 1), carbon sink to 915 kt/a from 2018 to 2030, forest stock volume to 47 488.3 km³ in 2030. Forest storage is forecasted to be 29 318.2 kt in 2030 by power function,  carbon sink to 1 478.4 kt/a from 2018 to 2030, forest stock volume to 61 722.6 km³ in 2030, and forest coverage to 61.77%.  Forecast results indicate that Beijing's forest city planning objectives, carbon peak and carbon neutrality can be realized. This paper concludes that Beijing's forest storage and value have increased since 1976 based on forest biomass and stock volume changes without considering economic and political factors. Beijing has a big forest carbon sink potential which may largely contribute to Beijing's carbon peak and carbon neutrality.

Alerting resources environmental carrying capacity helps directly diagnose the status of resources environmental carrying capacity during industrial development, timely make and adjust approaches to industrial development and realize sustainable development. This paper, based on Hainan's 12 key industries, uses alerting technology to set up alerting methods of resources environmental carrying capacity of key industries. In Hainan province, such alerting of tropical agriculture of environmental carrying capacity mainly happens in Wenchang city and Qionghai city, alerting of water resources in the northwest, altering of industries in oceanic oil-gas concentrating Yangpu economic zone. Severe and moderate alerting is in medicine and oceanic oil-gas industrial layout. Local altering happens in tourism and services industries chiefly due to the demands of population over the infrastructures. This paper presents differentiated development and control measurements for key industries of different alerting in different regions, in order to reach a sustainable development under resources environmental carrying capacity.

The reasons of trans-region water resource conflicts lie in unclear water resource ownership, irrational contract participants and lacks of the third supervisor viewing for incomplete contract. This paper, under the theoretical basis of graph model, analyzes their status transfer and stability of each major strategy of trans-region water resource conflicts, and attempts to present workable path to Ili River water resource conflict. Water right trading mode is a better way of prominent stability in dealing with trans-region water resource conflicts, compared with the traditional trans-region water resource interest negotiation mode. This paper provides a path to trans-region water resource conflicts and to its management system reform.

 This paper, taking Tianjin, Hebei, Shandong and Liaoning in Bohai rim as the studying cases, establishes an index system to evaluate urbanization and sea area carrying capacity, uses entropy to give the weights to urbanization and sea area carrying capacity, employs coupling model and coupling coordination model to measure their coordination degree, and applies the differential coefficient to analyze its difference and evolution rules. Results show the coupling degree of urbanization and sea area carrying capacity of the four statedabove provinces in Bohai rim is over 085, and coupling coordination degree is over 045, both higher and stable in Tianjin and Liaoning, lower and largely fluctuated in Shandong and Hebei. Their differential coefficient is less than 001, indicating a minor regional difference. It is concluded that the urbanization and sea area carrying capacity is in a stably coordinated status. 

This paper studies China's saline lithium resources from resources and reserve, brine components, processing technology and saline location. China has abundance of saline lithium resources, but low probable reserve, high Mg/Li ratio and in remote area. Lithium resources can not meet nation's demands. This paper presents suggestions in aiming at supply demand conflict from national strategy, resources exploration and technical innovation. Nation should determine lithium as energy resources. Exploration shall be focused on Qaidam basin's saline brines, and Sichuan basin's deep brine as well. To protect intellectual property rights can help capital be used in technical innovation. 

This paper selects two large sea salt producers in Bo Sea bay to study the Li content changes in their salt making processes with results showing that Li is enriching from sea water to final brine. LiCl becomes 97.27 mg/L and 138.15 mg/L in final brines in these two fields, reaching the cutoff grade of the brine Li. During producing sea salt, the crystallization of salts has a low absorption to Li+. According to China's sea salt production and Bo Sea Bay sampling data, Li metal is estimated to be 455.95t in final brines of China's all sea salt fields in 2013, equivalent to 2430.23t in Lithium Carbonate. Li content is high sea water in sea salt fields and tends to be concentrating in the final brine. Extracting Li technology is universal, which provides a prosperous outlook in extracting Li from sea salt field's brines. Extracting Li directly from sea water, if matures, is the future technology.

Enhanced Geothermal System (EGS) uses CO2 as medium, which not only changes energy structure, but also geologically stores CO2 to reduce green house gas emission,making EGS valuable.Fujian province possesses rich geothermal resources with excellent dry heat rocks. This paper basedon Fujian's minable geothermal field area at difference depth, dry heat granite porosity rate and CO2 solution applies volumemethod to estimate the storage capacityof CO2-EGS in a depth of 3 km to 7 km, between 102050.449Mt to 583145.424Mt, about 1.35% and 7.42% in China. (China's theoretical storage capacity is 7862Gt).Storage capacity of CO2 riseswith depth, reaching the top at the depth of 7 km. This paper provides references forfield assessment andmaking policy.

As representatives of different urbanization development modes, the UK, the US, Japan and Mexico have entered into the later stage of urbanization with urbanization rate above 70%. During their rapid urbanization period, large scale urban construction, urban underground resources development, and urban wastes impacted geological environment, leading to vast issues such as depletion of underground water, ground subsidence, emergency geology disasters, underground water pollution, soil pollution, sea water incursion, land erosion, etc. Their success in protecting and managing geological environment is of references for China to carry out urban planning, legislation, administration, monitoring, technical research and application in urban geology environment, which is also an approach to the sustainable development.

“Resource curse” commonly occurs in developing countries that possess abundance of resources. Tanzania is cursed. This paper, based on its mining policy evolution, analyzes its issues and challenges, which helps understand the abundant resources coexisting with poverty. Challenges in its mining first come from the international capital, which leads a flush in mining industry but in vain in contribution to its economy. A social gap is forming, which partially is revealed by the conflicts between mining giants and novices. Behind Tanzania's “resource curse” is its poor mining control and policy making.

This paper uses spatial structure correlation method to study the spatial structure of Urumqi`s resorts, and applies minimum spanning tree and computerized stimulation to work out an optimal transportation model of Urumqi tourism on touring days and routes, offering references for planning Urumqi`s tourism transportation. It is reasonable to spend two days touring downtown Urumqi. The optimal route of tourism buses is: the Martyrs Cemetery—Yanerwo Scenic Spot—Water Park—Zoo—Memorial Hall of Xinjiang Office of the Eighth Route Army—Xinjiang International Grand Bazaar—Xinjiang Folk Custom Street—Renmin Park—Hongshan Park—Autonomous Region Museum—Xinjiang Folk Custom Street—Shuimogou Scenic Spot—Yanan Park—Memorial Hall of Xinjiang Office of the Eighth Route Army—the Martyrs Cemetery.

This paper studies the water resources capacity to economic development under the strategy of energy saving and emission reduction in Hebei province. According to the goals in energy saving and emission reduction stated in the 11th Five Years Plan, this paper establishes a index system of water resources capacity to economy, estimates the capacity of water resources, and presents approaches to energy saving and emission reduction.

This paper, based on a case study on fifteen cities during 1995—2006 in Xinjiang, applies standard deviation and variation coefficient to quantitatively study the temporal difference of the third industries from absolute deviation and relative deviation, and to study the spatial structure from distance and ratio index, and to study the development speed from relative development ratio. The authors present some approaches to regional development of third industries.

A challenging situation over the urban land resources necessitates a sustainable development for lands, so the recycling economy as a new economic development mode is a strategy aiming at the sustainable development. This paper studies the theory from its origin, features and principles, insists that the sustainable development of the urban land resources must be based on the recycling economy, which is an unavoidable choice, and presents the principle of 3R for economy in practice.

Due to different regional industrial policies and mineral resources, big disparities in mineral resources industry exist in eastern, central and western China in economic benefits, industrial structures and industrial framework. This paper applies location quotient to analyze the overall development level of mineral resource industry. The regional economic disparity leads to inconsonance between mineral resources specialization degree and resources enrichment degree. A policy is presented to develop a balanced mineral resources industry.