在“双碳”目标的驱动下，如何遵循绿色低碳途径在城市有限绿地空间条件下实现碳中和，提升城市绿地植物固碳效益成为新时代植物景观营造必须思考和解决的科学问题。结合西安地区不同土地利用类型下的碳储量时空变化状况，提出符合场地生境斑块连通性需求的4种城市绿色空间碳汇矩阵单元，探索植物碳汇在景观全生命周期中的设计过程。通过对西安地区典型绿地样方的持续调研观测，结合i-Tree软件总结出常见乔灌、地被植物的年固碳量，筛选出高固碳型植物种类，总结出适用于公园绿地和居住区绿地的高固碳型灌丛-地被型、地被型植物群落设计模式。依托“高固碳型植物群落数字化平台”对灌丛-地被植物群落碳汇效益进行持续智能监测与模拟，为植物种植设计方案优化和科学决策提供依据。

Urban nature is of vital importance for human well-being in an increasingly urbanized world. How to use fragmented urban green space characteristics to meet the ecological function and landscape activity needs efficiently and economically is an urgent design research problem to be solved. This study promoted the theory and practice of community ecology into the design of urban environment base the carrier as artificial habitat island, demonstrated the correlation and interoperability of the types of built environment habitats and plant community organization, and explored the different design models and correlation between habitats and design elements base the research through design. The research proposed five "Artificial Habitat-Island" optimization design models for five environmental green space categories in semi-arid microscale green space, and summarized the "Artificial Habitat-Island" designing process of construction and management maintenance evaluating landscape full life circle. Using hierarchical analysis to make a comprehensive assessment of "Artificial Habitat-Island" to verify its application function value, the GI, G3, B3 and B7 prominently enhanced ecological and landscape benefits. Not only had good regional landscape characteristics, its management and maintenance cost were also lower. "Artificial Habitat-Island" provided a new experimental medium of both ecological and experimental value in small-scale urban space, effectively improved the value of the built environment landscape with using stable and high-quality local plant community, which was more conducive to the study of manual intervened groundcover plant community composition.

With the rapid development of urbanization in the semiarid northern areas of China, urban ecological imbalances, the heat island effect are becoming increasingly severe. Before we calculate the carbon benefit in landscape, we must first understand the process of carbon sequestration this research provided a new experimental method with both ornamental and experimental value for a small-scale urban space. Taking the practice project of the Baima River Park bioretention facilities as an example, this study summarized the optimization model of ground cover plant allocation and soil remediation, providing a theoretical basis for the low-impact development and construction of urban green spaces. We applied a new technique and plant community to transform plant carbon fixation, and the results showed that the highest photosynthetic rate was found in Achillea wilsoniana and Festuca glauca. Vegetation restoration can ameliorate soil conditions. Ceramsite and bark plots had efficient effects on ecological restoration, and the effect of adding soil mulch on soil moisture content was better than that of adding soil substitutes. A1 (Echinacea purpurea) and B1 (Achillea wilsoniana), which are the constructive plant species and showing good performance, significantly enhanced the soil's physicochemical properties and habitat suitability. B1 was more suitable for sunny plant habitats, and B2 was more suitable for shaded plant habitats. During different comparisons, we developed two plant community configuration optimization models, which are a preliminary response and supplement to the ecological design of microscale habitat patches in man-made urban environments, and solved the problem of direct application of plant communities in urban environments.

在降水稀少、气候干旱的西北地区,水分是决定植被类型及分布的主导因素。在城市建设过程中,不同的立地条件、人为干预对水文条件的优化,产生不同于自然环境的多样生境,为城市绿色基础设施的植物景观多样化营建创造了可能性。基于"

作为我国海绵城市建设中应用较为广泛的一类技术设施,生物滞留设施因其滞留和净化雨水的功能特点决定了其土壤生境具有特殊性。通过对沣西新城典型生物滞留设施不同坡度、坡向、坡位影响下的土壤含水率和土壤容重进行调查与测定,分析总

西咸新区作为西北半干旱半湿润地区首批海绵城市建设试点,其绿化建设具有典型的代表性。生物滞留设施作为低影响开发建设中常用的生态设施,与其相配套的植物种植设计一直以来是国内外研究的热点领域,参照西北地区自然群落原型,构建地被

The promotion of urban biodiversity mainly relies on all kinds of urban green land, especially the green land affiliated with fragmentation and smaller dimensions that receives less attention. Based on small-scale connected urban green spaces, the construction of habitat networks is very important for biodiversity protection. Considering the importance of the habitat networks constructed by the affiliated green land with smaller dimensions to biodiversity protection, this research attempted to apply a new technique to construct a habitat network and an urban block unit structure for ecological restoration and green space biodiversity at the city-block scale. By analyzing the related ecological principles, this research extracted four design approaches: the green land habitat patch-companion method; the corresponding shape and function method; the newly increased and protective patch location method; the bunching patch substitution method; and the approaches for designing campus habitat galleries, such as the 3D greening method of narrow and long campus galleries, the method of designing a campus main road green belt, the method of designing a relaxed campus landscape green belt, the method of designing a core campus landscape green belt, the method of connecting the habitat patch node, and the method of covering habitat diversity. By comparing the network pattern indexes, determining the key habitat patches, constructing the habitat network frameworks, and improving the habitat aggregation quality, this research constructed three ideal network models for urban university campus habitats and explained the butterfly biodiversity model graphic representation, application conditions, and features. The "crosswise radiation" network was effective for ecological restoration, and the "dendritic zoning" network significantly enhanced butterfly biodiversity.

城市建设使得场地中的土壤条件与自然环境相比有很大的差异,进而直接或间接影响城市生态环境质量.通过科学适宜的人工干预,城市场地土壤改良在场地可持续性设计方法中越来越重要.针对建成环境中的场地土壤类型,提出生态服务功能需求下的土壤改良设计方法,是城市建成环境场地设计中适宜性生态系统营建的重要途径.从土壤因子与植物景观营造的关系出发,指出基于土壤因子进行植物景观营造的必要性,并从植物与土壤的维护和跟踪监测两个方面,研究了场地可持续管理的方法;以西建大南门花园为例,基于土壤适宜性改良对草本植物群落进行设计与实验性研究,验证了不同的土壤改良设计方法对土壤的改善和对植物生长的促进效果.