The territory spatial utilization efficiency is an important element of the quality of regional economic and social development, and the spatio-temporal coupling relationship with high-quality development has an important impact on the realization of regional coordinated development. Therefore, on the basis of the planning of the main function area, the Super-SBM model, spatial classification, ESDA and coupling coordination model were used to reveal the coupling relationship between the territory spatial utilization efficiency and high-quality development in Wanjiang City Belt from 2011 to 2019. The conclusions can be drawn as follows. (1) The territory spatial utilization efficiency of key development areas was significantly greater than that of key ecological function zones and the main national agricultural products production areas, and the temporal differentiation pattern showed that the gap between the key development zones was the largest, followed by the main national agricultural production areas, and the key ecological function zones were the smallest. (2) In terms of spatial distribution, the high-efficiency areas were concentrated around Wuhu, and the phenomenon of high-value agglomeration was gradually dispersed, the general-efficiency areas were mainly distributed in Anqing and Chizhou, and the low-efficiency areas gradually moved northward to Chuzhou. (3) As for spatial correlation characteristics, the global spatial correlation of the two major systems changed from negative to positive from 2011 to 2019. The local spatial correlation was mainly based on the significant HH areas and the significant LL areas, and the significant HH areas were mainly distributed in the southeast of the Wanjiang City Belt, the significant LL areas were concentrated in the northern part and the agglomeration range had been expanded. (4) From the view of the characteristics, the level of coupling and coordination of territory spatial utilization efficiency and high-quality development in different spaces has gradually increased. Furthermore, the degree of coupling and coordination of urban space tended to be low level, the agricultural space transitions from a high-running-in to a high-coordination, the ecological space gradually turned to low-coordination, and the comprehensive level of coordination had been in a high-degree stage.

The era of ecological civilization construction emphasizes the comprehensive growth of ecological and economic benefits. In order to respond to this demand and enrich the natural ecological perspective of territorial space research, by taking Zhuanghe city of Liaoning province as an example, this paper studies the ecological value evaluation and economic compensation in small watershed areas. First of all, based on water system classification law called Strahler-Horton, We take the hydrological analysis of GIS as the main tool to simulate and divide the small watershed of Zhuanghe city. Taking the dumping points and watersheds at all levels as boundaries, small watersheds are divided into sub-watersheds and micro watersheds. The units divided under the small watershed system have ecological integrity, in addition, the units have index conductivity, which come from original administrative management system including county, township and village. And then, under the principle of ensuring ecosystem integrity and clear division of powers, this hierarchical and partitioned spatial system is structured by superimposing the boundaries of small watershed areas and administrative areas, including county, small watershed, sub-watershed and "micro watershed+village". Finally, about the small watershed and sub-watershed, owing to their complete ecosystem, the method called eco-economic relative priority model is available to obtain the ecological compensation relationship between units. About the basic unit scale called "micro watershed+village", based on evaluations including ecological importance, agricultural production suitability and urban development suitability, we divide the types of each basic unit, to make sure the implementation of ecological compensation. Through constructing the eco-economic value evaluation system, this paper looks for a method about how to balance the protection and development of land space in the mountainous and hilly areas.

The research on the evaluation of territorial "production-living-ecological" spatial functions and the coordination relationship at the township-street scale is more oriented towards humanistic demand and grassroots refined governance support in the process of territorial spatial optimization. This study proposeed a whole set of thinking framework of "fractal dimension function evaluation-coordination level measure-action direction judgment". Among them, the dual attributes of space membership and space quality were considered to construct a comprehensive evaluation index system for the "production-living-ecological" spatial functions. The study then used the coupling coordination model and the bivariate spatial autocorrelation model to explore the level of coordination between functions and their respective directions for overall coordination, by taking Suzhou as an example. The results showed that: (1) The constructed theoretical framework, index system and technical method path have good scientificity and universality, and can effectively identify the spatial function distribution pattern and spatial coordination relationship of the "production-living-ecological" spaces at the township-street level. (2) Under the constraints of the higher standards of township-street scale, the "production-living-ecological" spatial functions in Suzhou had significant urban-rural differences and regional differences, and the overall level of coordination of the "production-living-ecological" spatial functions was low, showing a distribution pattern of "large dispersion and small agglomeration". Besides, the overall coordination level was mainly affected by the co-direction effect of production and living space functions, and the lack of synergy of ecological space functions showed a reverse-direction effect. (3) Promoting the comprehensive function of "production-living-ecological" spaces from different spatial types such as urban areas, townships and ecological units, improving the refined governance of grassroots territorial spaces, and realizing the overall coordination of "production-living-ecological" spaces at a larger scale can build a territorial spatial pattern with multiple functions, appropriate landscapes and coordinated progress.

The optimization of ecological security pattern can provide countermeasures and suggestions for land space protection and restoration, so as to supplement the actual lack of practical guidance of existing research on it. The construction of ecological security pattern is of great significance to optimize the protection and restoration of land space. Starting from the identification of urban and ecological source in the Hohhot-Baotou-Ordos Region, this paper constructs an evaluation index system of urban and ecological source expansion resistance, and uses the minimum cumulative resistance model to construct the ecological security pattern. Then we identify key areas of ecological protection and restoration (ecological corridors, ecological pinch points and ecological barrier points), build an ecological security network, optimize the pattern of land space protection and restoration, and put forward relevant countermeasures and suggestions. The main conclusions are as follows, at first, the area suitable for expansion of urban sources is far smaller than that of ecological sources, which is better than the expansion of ecological sources as a whole, so the regional ecological construction, protection and restoration have great potential. Secondly, the ecological space in the ecological conservation area accounts for the largest proportion of the community area of the ecological security pattern, followed by the ecological space in the optimized buffer area, and the living space in the ecological protection area accounts for the lowest. Last but not the least, 135 ecological corridors were extracted, 12 ecological pinch points and 6 ecological barrier points were identified, rivers and traffic corridors were supplemented, 164 ecological strategic points were extracted, and an ecological security network was constructed. Ultimately, it integrated natural elements such as mountains, rivers, forests, fields, lakes, grass and sand to form a land space protection and restoration pattern of "multi-core, four areas, three belts, one screen and one basin", so as to improve the integrity and connectivity of regional ecological landscape and maintain regional ecological security.

The study on strategies of high-quality development oriented ecosystem protection and territory spatial utilization has important practical significance for promoting the construction of ecological civilization in the Yellow River Basin and the balanced development in the whole China. A theoretical research framework of strategies for ecosystem protection and territory spatial utilization for high-quality development in the Yellow River Basin was constructed based on the relationship of "Pressure-State-Response". Under the framework, this paper analyzed the ecological construction and land development behavior including land reclamation, grain for green and urban encroachment brought by the pressure of urbanization, and its impact on the evolution of the land spatial patterns and ecosystem in the study area. The spatial differences in restrictions between ecosystem protection, agricultural production and territory spatial development in the basin, from the perspective of territory spatial utilization and development restrictions and the resource and environmental carrying capacity, were also examined. Based on prominent problems existing and the unique "natural-humanistic" characteristics in the Yellow River Basin, the coordinated development strategy of "water resources protection-green development-cultural inheritance" for the high-quality development were proposed, including the National Nature Reserve protection, the ecological infrastructure network construction, the green industry development and characteristic cultural inheritance, and the relevant guiding policies and the safeguard measures. It can provide support and guarantee for the high-quality development in the Yellow River Basin.