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Liu Y.,China Agricultural University | Liu Y.,Beijing Rural Landscape Planning and Design Engineering Technology Center | Liu Y.,Beijing Laboratory of Urban and Rural Ecological Environment
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 | Year: 2016

Rural landscape is different from urban landscape. The purposes of studying on types of rural landscape are to strengthen types of landscape with rural characteristics and highlight unique style of rural landscape in the planning designs of rural landscape in the future. Types of rural landscape can be classified into natural landscape and human landscape, which include material and immaterial attribute, and not one of them can be dispensed with. Starting with material and immaterial attribute, the article makes a further classification. © 2016 Taylor & Francis Group, London. Source


Yang X.,China Agricultural University | Zhao J.,China Agricultural University | Zheng J.,China Agricultural University | Leng P.,China Agricultural University | And 6 more authors.
Journal of Forestry Research | Year: 2016

Syringa is an important aromatic woody angiosperm that is widely planted in gardens. Its dry flowers are traditionally used to manufacture infusions and spices in China. In this study, the floral volatiles emitted from nine different Syringa species and varieties, viz. S. chinensis, S. protolaciniata, S. oblata, S. oblata var. giraldii, S. oblata var. plena, S. vulgaris ‘Mrs Harry Bickle’, S. vulgaris ‘Bright Centennial’, S. vulgaris ‘White Spires’, and S. vulgaris ‘President Lincoln’ were collected by the dynamic headspace technique, and then identified by automated thermal desorption–gas chromatography/mass spectrometry. There were significant differences in components and corresponding contents of floral scent emitted from the nine Syringa species and varieties. Among the detected components, β-ocimene exhibited the highest content, accounting for more than 70 % of the floral scent of S. protolaciniata, S. oblata var. giraldii, and S. vulgaris ‘Bright Centennial’. A significant daytime variation of floral scent emitted from S. pekinensis was recorded, especially for benzaldehyde, whose content first increased and then decreased. We studied the scent emitted from the in vitro flowers of S. vulgaris ‘Pres Lincoln’ during the process of natural drying. Alcohol compounds were released in the greatest content, and the content of 2-ethyl-1-hexanol accounted for about 40 % of the total release amount. The results described the emission pattern and mechanisms of floral scent in Syringa. © 2015, Northeast Forestry University and Springer-Verlag Berlin Heidelberg. Source


Feng L.,China Agricultural University | Feng L.,Beijing Rural Landscape Planning and Design Engineering Technology Center | Feng L.,Beijing Laboratory of Urban and Rural Ecological Environment | Ma X.Y.,China Agricultural University | And 2 more authors.
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 | Year: 2016

This article first defined Beijing’s rural greenway areas, took two successful examples ofthe Baili Landscape Painting Gallery and the Shen tang yu Landscape Road to draw four main appropriatetypes of greenways for Beijing countryside, which are riverfront type greenway, valley type greenway,cultural heritage type greenway, and natural ecological type greenway. Then it gives more details on thecharacteristics of each type of greenway. The authors proposed valley type greenway initially. © 2016 Taylor & Francis Group, London. Source


Qin Z.,Beijing Forestry University | Qin Z.,National Engineering Research Center for Floriculture | Qin Z.,Beijing Key Laboratory of Ornamental Plants Germplasm Innovation and Molecular Breeding | Qin Z.,Beijing Laboratory of Urban and Rural Ecological Environment | And 9 more authors.
Chinese Journal of Applied Ecology | Year: 2015

To investigate the diurnal variation of the correlations between the cooling and humidifying effects and canopy structural characteristics of the Koelreuteria paniculata community, the measurements of air temperature, relative humidity, canopy density, leaf area index (LAI) and mean leaf angle (MLA) were performed on calm sunny summer days in the community in Beijing Olympic Forest Park, China. There were significant correlations between the canopy density, LAI and MLA, which affected the cooling and humidifying effects together. The cooling effect reached its maximum by 12:00, whereas the humidifying effect reached its peak at 10:00. Compared with the control open space site, the community appeared to lower the air temperature by 0.43 to 7.53℃ and to increase the relative humidity by 1%-22% during the daytime. However, the cooling and humidifying effects seem to be not effective during the night. The canopy density and LAI were better for determining the cooling and humidifying effects from 9:00 to 12:00. However, these effects were largely controlled only by the canopy density from 12:00 to 14:00 and were significantly correlated with the canopy density and LAI afterwards until 18:00. ©, 2015, Editorial Board of Chinese Journal of Applied Ecology. All right reserved. Source


Ma X.Y.,China Agricultural University | Ma X.Y.,Beijing Rural Landscape Planning and Design Engineering Technology Center | Ma X.Y.,Beijing Laboratory of Urban and Rural Ecological Environment | Feng L.,China Agricultural University | And 5 more authors.
Progress in Civil, Architectural and Hydraulic Engineering - Selected Papers of the 4th International Conference on Civil, Architectural and Hydraulic Engineering, ICCAHE 2015 | Year: 2016

Urban green space provides resources for human and maintains ecological diversity, which plays a major role within the ecological security system. Thus, the ecological security of urban green land is the crucial barrier and foundation of the regional ecological security. Scientific and objective assessment of urban green land ecological security could provide a reference for the establishment, maintenance, management of a guaranteed ecological security system, as well as related laws and regulations. This article in the first place systematically summarized the scope and progress of existing research on ecological security assessment of urban green space. At last it discussed the developmental opportunities of the ecological security of urban green space in Beijing particularly, and put forward its assessment strategy. © 2016 Taylor & Francis Group, London. Source

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