This paper analyzes the temporal-spatial evolution of urban air pollution in the Huai River Eco-economic Belt, explores urban air pollution changes with neighboring areas and provides references for making policies of air pollution control and prevention. According to PM_2.5 data of 28 cities in the Huai River Eco-economic Belt from 2015 to 2019, this paper uses descriptive statistics and Markov Chain to study the temporal-spatial evolution of air pollution and the urban air pollution type changes with neighboring air pollution types. The results show a decreasing air pollution with the feature of low-in-summer and high-in-winter. However, PM_2.5 is still above state's tier II threshold except months of July, August and September, and air pollution is still severe. Low or relatively low air pollution is stable, but medium or high air pollution are unstable, probably apt to turn into other pollution types and much impacted by spatial locations. Neighboring air pollution types unevenly impact urban air pollution type changes under different spatial lagging. Air pollution types display a decreasing spatial evolution pattern from northeast to southwest, with a tendency to low pollution generally and a diminishing regional difference. This paper concludes that the Huai River Eco-economic Belt has a decreasing urban air pollution with seasonal impacts and spatial difference. This paper presents suggestions on collaborating air pollution control and prevention through the across-regional collaboration system and air quality evaluation system.

Realizing ecological product values is a key part of China’s ecological civilization construction, and a necessity for China to make policy and manage natural resources. This paper gives definition of conceptual content of ecological products according to realization need of ecological product values, and establishes a system margin of ecological product values, in which the basis of realizing ecological product values is discussed from ecological system, ecological product value constitution, ecological product accounting and balancing. Life circle rule is used to build the approaches to ecological product values, including unit processes of ecological system, ecological products, accounting, balancing, producing, trading and consuming. Alternative approaches involve three key steps, producing, trading and consuming. Selection of them is actually to define the trading ways and to turn products into consumer goods. The core in producing stage is supplier and supplying means of productive elements, the key in consuming stage is payer who is related to consuming category of ecological products. Analysis and summary of approaches to different ecological systems and realization of ecological product values provides references for the innovation of realizing ecological product values.

 This paper uses shift share to study the economy in Leiyang, a resources exhausted city, and assesses its industrial structure and leading industry. DEA is employed to calculate its industrial input/output efficiency and industrial structure changing rules, with results showing a rising gross economic output, and a gradually adjusted industrial structure year by year, but still in the stage of pulled by secondary industry overall from 2005—2015. The first industry is slowly growing, most in primitive mode, the secondary is fading and the third shows a good outlook, but insufficient to the entire economy in Leiyang city. Technology is upgrading but scale efficiency is still low. This paper presents suggestions for Leiyang city on optimizing its industrial structure and gasping developing opportunity in China·s new macroscopic economic environment.

The lower first Member reservoir of Liushagang formation, W oilfield block in Beibuwan basin is characterized by a complicated lateral change and variable porosity and permeability. This paper uses the conventional methods such as reservoir property, well logging, thin section and SEM to study its reservoir features, and analyzes the leading controls on reservoir quality from sedimentation and diagenesis. Rock types of the first lower member are composed of quartz sandstone feldspathic quartz sandstone, well sorting, sub-angular to sub-round, with medium to high porosity and permeability. Reservoir quality, subject to sedimentary microfacies, one of the leading controls, is best at mouth bar of fan delta frontier and braided channel bar, and then at braided channel. This member had been strongly reshaped by diagenesis, belonging to the early diagenetic stage B to middle diagenetic stage A. Three prevailing pore zones were developed with major pore types displaying as intergranular dissolved pore, intragranular dissolved pore, dissolved pore of interstitial material and mold holes. Clay minerals filling the pores may contribute to the variance in reservoir porosity and permeability.

This paper, based on Ningguo city’s resources and environment, establishes an index system in evaluating resource and environment carrying capacity, uses the comprehensive index to evaluate Ningguo’s land resource and environment carrying capacity form land, water and geological environment carrying capacity. The result indicates an overload in farmland carrying capacity, excess in construction, ecology, water resource and environment, and balance in geological environment, providing suggestions for promoting Ningguo’s coordinated development of resource environment and economy.

Resources and environment carrying capacity refers the coordinating ability of resources development, environmental protection and social economy, varies with land spaces, so its evaluation shall be conducted in land zones. This paper classifies China’s land into urbanized zone, township zone, agriculture zone, mining zone, oceanic zone, and ecological protection zone. Land carrying capacity is the core of resource and environment carrying capacity. This paper establishes index system to study the land carrying capacity from farmland, construction and ecological land, and presents issues in evaluating land carrying capacity.

Based on the informatization construction of the information center, China aero geophysical survey and remote sensing center for land and resources, this paper determines the information management flowchart of mineral resources projects, establishes projects hierarchy and threeleveled management model, which can trace projects, subjects when changes happen and project history and improve the query and statistical function. The management system, which is based on J2EE and SSH2 development framework techniques, can be combined with application and data consolidation, and completes information gathering, processing and inputting. It has been recommended to be used in the research center. This system also enhances the supervision on project execution process and project funds use that offers references for developing the similar projects management system.

In order to analyze the reform of land supervisors business in different regions, this paper, based on questionnaire, uses SPSS to do statistics and correlation. The results show that only one third of investigatorsthink there is no need to add land supervisors business, localized land supervisors suggestions have variance, and vary from gender, ages and positions. This paper thinks necessary to reform land supervisors business scope and its direction, and should be different on reform focus in 9 land bureaus.

This paper, by means of employing statistics, cases, references, expert query, tendency extrapolation and regional analogy, estimates Chinas mine damaged land coefficient, restorable ratio and reclamation use proportion, and forecasts the damaged mine lands, lands pending for reclamation and reclamation potential. The results show: 1) the damaged land coefficient is 0.31hm^2/10^4t in underground coal mines, 0.10hm^2/10^4t in opencast coal mines,0.30hm^2/10^4t at iron mines, the damaged land area is 13.33hm^2 per 100million bricks; 2) Until 2020, the damaged mine land is estimated to amount to 806.60×10^4hm^2, of which the coal mines possess the most, up to 233.93×10^4hm^2,120.20×10^4hm^2 to be restored. The damaged coal mine land can be restored to farmland, grassland and construction, 52.99×10^4hm^2, 55.19×10^4hm^2, and 12.20×10^4hm^2, respectively; 3) Reclamation potential is big that a sum of 308.78×10^4hm^2 can be restored, of which 148.83×10^4hm^2 to farmland, 125.31×10^4hm^2 to grass or woods land, 34.64×10^4hm^2 to construction land. The damaged coal mine land is key to be restored to farmland.

Based on the analysis of conventional ecological footprint theory, this paper revises its production factor and balance factor to get an improved model. Then it uses the conventional and modified models to calculate Lanzhous farmland ecological footprint from 2000-2008, and analyzes its dynamic changes. Results from the traditional model show increasing ecological footprint, decreasing ecological carrying capacity, and a weak sustainable state with ecological surplus, but results from the improved model are just the opposite. After analysis it turns out that the modified model is more practical and conducive to the study on sustainable use of farmland in Lanzhou. This paper uses the improved model to forecast farmland ecological footprint, ecological carrying capacity and sustainable index in Lanzhou, and gives ways of raising the average ecological productivity of farmland.

This paper uses statistics and scenario simulation to classify the damaged farmland in loess hilly terrain into three categories： mild, moderate and severe. The rehabilitation fee is calculated based on three subsiding slopes by single project： 4 082 RMB for the mild, per mu, 5 455-5 610 for the moderate and 11 374-12 283 for the severe where slope is below 5 degrees; 6 635-7 389 for the mild, 7 509-8 262 for the moderate and 10 996-11 751 for the severe where slope is between 5 to 15 degrees; 8 386-9 442 for mild, 9 259-10 318 for the moderate and 12 748-13 804 for the severe where slope is between 15 to 25 degrees, which is relevant with damaged degree, slope and transporting distance of volume.
At Pingshuo’s Panjiayao coal mine with the damaged degree mainly mild to moderate, estimated by means of MSAS and GIS, the average static rehabilitation fee is 7 016RMB, most contributed by land flatting works.

Mine lands are a combination of land management and ore resources management and a key component in land and resources management. Mine land intensive use is of importance in economizing and protecting farmlands. This paper, based on references, analyzes the definition of mine lands, features, supply scale, mining destroyed land scale, and presents the connotation of mine land intensive use, occupying less land, restoring farmland, quick rehabilitation, and approaches in planning, saving lands and reforming from exploration, mining and closing mine.

Fractal dimension can effectively describe complex textural features. The traditional automatic classification of remote sensing is mainly based on the spectrum feature information of data, which is difficult to utilize the textural information of remote sensing image throughly and effectively. With the wide application of HR remote sensing data in recent years, problems such as how to quantize textural features, how to classify ground objects according to their respective textural features are arousing many scholars’ concern. Based on the comparison of different effects of operator extraction on different edges, the study takes edge extractions on Quickbird data of four kinds of typical land cover types, and calculates dimensions of image sample boxes on the platform of Matlab. It is found of significant difference for box dimensions of these land cover classifications by comparison, thus fractal dimension can be utilized to quantize textural features of remote sensing images and by which, different land cover types can be classified effectively.

This paper discusses the sense of land rehabilitation planning and studies its feasibility. Rehabilitation planning is pivot to the whole rehabilitation and requires the rehabilitation be proceeded while mining, and ensures the capital and preserves the topsoil. Rehabilitation projects include soil reconstruction, vegetation reconstruction, adjuvant works, monitoring and maintenance. Rehabilitation works are poor in feasibility due to their static operation which can not match the dynamic mining, small scale maps, and absence of blocks, which can be improved through ecological ways at the early destroyed land stage, planning fitting with phased and annual designs, a local project ahead the overall project, and a detailed project execution map.

RS and GIS are a helpful tool to measure the soil erosion, to quickly monitor the dynamic changes in soil erosion distribution and extent. This paper, based on a case study of the upstream of Fenhe Reservoir in Yellow River, applies the Remote Sensing data of Landsat MSS (1976), TM (1990) and ETM+ (2002) to dynamically monitor the land erosion with the results indicating that the soil has been eroded extensively during 1976 to 1990, and turned to a good condition in general during 1990 to 2002, but still worsening locally. It is a big task to maintain the water and soil.