Beijing Laboratory of Urban and Rural Ecological Environment

Beijing, China

Beijing Laboratory of Urban and Rural Ecological Environment

Beijing, China
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Li F.,Beijing Forestry University | Li F.,Beijing Laboratory of Urban and Rural Ecological Environment | Zhang F.,Beijing Forestry University | Zhang F.,Beijing Laboratory of Urban and Rural Ecological Environment | And 8 more authors.
International Journal of Environmental Research and Public Health | Year: 2017

Urban green spaces encourage outdoor activity and social communication that contribute to the health of local residents. Examining the relationship between the use of urban green spaces and factors influencing their utilization can provide essential references for green space site selection in urban planning. In contrast to previous studies that focused on internal factors, this study highlights the external factors (traffic convenience, population density and commercial facilities) contributing to the use of urban green spaces. We conducted a spatiotemporal analysis of the distribution of visitors in 208 selected green spaces in central Beijing. We examined the relationship between the spatial pattern of visitor distribution within urban green spaces and external factors, using the Gini coefficient, kernel density estimation, and geographical detectors. The results of the study were as follows. The spatial distribution of visitors within central Beijing’s green spaces was concentrated, forming different agglomerations. The three examined external factors are all associated with the use of green spaces. Among them, commercial facilities are the important external factor associated with the use of green spaces. For the selection of sites for urban green spaces, we recommend consideration of external factors in order to balance urban green space utilization. © 2017 by the authors. licensee MDPI, Basel, Switzerland.


Wang J.,China Agricultural University | Jia Y.-H.,China Agricultural University | Zhang K.-Z.,China Agricultural University | Zhang K.-Z.,Beijing Laboratory of Urban and Rural Ecological Environment | And 2 more authors.
Beijing Linye Daxue Xuebao/Journal of Beijing Forestry University | Year: 2017

The hybridization of Lilium Oriental hybrids and wild lily of Sect. Sinomartagon Comber is the farmost genetic relationship and it's difficult to achieve. Researching the different expression genes in pistil of cross-compatibility and cross-incompatibility may explain the mechanism of causing orientated growth of pollen tube and the molecular mechanism of incompatible hybridization, and provide the basis for overcoming cross-incompatibility. We constructed a forward suppression subtractive hybridization (SSH) library by using the cross-incompatible Lilium Oriental hybrid pistils as the tester, and the cross-compatible ones as the driver. 180 positive clones were randomly screened out. Through sequencing, deleting the bad, removing the redundant and aligning the sequences, 113 ESTs were found to be homologous with known sequences in the bioinformatics databases. RT-PCR was performed to test the 10 selected different expression genes, which showed 1 gene was up-regulated, 7 genes were down-regulated and 2 genes were almost unchanged. Gene annotation and functional category analysis showed that the different expression genes mainly contained signal transduction(including PP2A-3, CDPK and small GTP-binding protein), transport-related(including clpB and CAT2), stress/defense(including ATPase and pyrophosphatase proton pump), protein fate related genes(including 60S ribosomal protein). It was speculated that the incompatibility in the section cross of Oriental hybrids ×Lilium pumilum was probably resulted from the abnormal signal communication between pistils and pollens, the deduced substance transport ability in pistils, the weaker stress resistance ability in pistils after incompatible hybridization. © 2017, Editorial Department of Journal of Beijing Forestry University. All right reserved.


Shi W.,Beijing Forestry University | Shi W.,Beijing Laboratory of Urban and Rural Ecological Environment | Bloomberg M.,Lincoln University at Christchurch | Li G.,Beijing Forestry University | And 4 more authors.
PLoS ONE | Year: 2017

Artificial excision of the distal part of acorns in order to promote germination is well researched in oak seedling cultivation studies. However, studies of combined effects of cotyledon excision and nursery fertilization on container seedlings are lacking, especially for seedling root growth and outplanting performance. This study aimed to explore the main effects of cotyledon excision on Quercus variabilis seedling emergence characteristics and demonstrated the combined effects of cotyledon excision and nursery fertilization on seedling quality to improve Quercus variabilis seedling outplanting performance. Four cotyledon excision treatments and two classes of nursery fertilization were implemented. Seedling emergence was noted every week after sowing. Seedling dry mass, morphology, and nutrient status were assessed at the end of the nursery season. After the first outplanting season, the aforementioned measurements along with seedling survival were determined once again. The results showed that cotyledon excision generally induced greater and more rapid seedling emergence, but did not affect shoot emergence synchronicity. The highest total emergence and emergence rate occurred with Intermediate excision (1/2 of the distal end of acorn was excised). Effects of nutrient loss due to cotyledon excision on seedling quality and outplanting performance were somewhat compensated by nursery fertilization. Nursery fertilization promoted dry mass increment (the net increment from T0 to T2 for dry mass) for excised seedlings after outplanting, resulting in better performance for Slight (1/3 of the distal end of acorn was excised) and Intermediate excision treatments in the field. Thus we conclude Intermediate excision combined with reasonable nursery fertilization can be recommended for production of nursery grown seedlings for afforestation. © 2017 Shi et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


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.


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.


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.


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.


Fu Y.,Beijing Forestry University | Fu Y.,Beijing Laboratory of Urban and Rural Ecological Environment | Oliet J.A.,Technical University of Madrid | Li G.,Beijing Forestry University | And 3 more authors.
Silva Fennica | Year: 2017

Although controlled release fertilizer (CRF) with single and multiple-layer coatings are extensively used in tree seedlings, studies that compare the impact of CRF type and application rate on seed- ling growth, nutrient storage, and, most importantly, outplanting performance, are lacking. In the current study, container-grown Pinus tabulaeformis Carr. (Chinese pine) seedlings were fertilized with commercial CRF with either one or multiple coating layers with equivalent formulation and longevity, at six rates ranging from 40 to 240 mg N seedling–1. Seedlings were sampled for dry mass, non-structural carbohydrate (NSC) content, and mineral nutrient status at the end of the growing season in the nursery, and subsequently outplanted for one season. Compared to Chinese pine seedlings fertilized with single-layer CRF treatments, seedlings treated with multiple-layer CRF had higher starch concentrations but reduced dry mass and N, P, K concentrations in the nursery, and reduced diameter growth in the field. Fertilization rates of 80 and 120 mg N seedling–1 generally yielded maximal plant dry mass and mineral nutrient content. Field survival peaked at 80 mg N seedling–1. Seedling growth, soluble sugar content, and starch concentration in the nursery and survival in the field consistently decreased at rates of 200 and 240 mg N seedling–1. In our study, optimal nursery and field performance of P. tabulaeformis were observed using single layer CRF at 80 mg N seedling–1 (3.3 g CRF l–1 media). © 2017, Finnish Society of Forest Science. All rights reserved.


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.

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