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Taking Beihua shan and Wuling shan mountain as examples, the author investigated the Wild Ornamental Plants (WOP) resources in mountain area of northern China in detail with ecological systematic sampling method. The meteorological data of no meteorological observed plots was reckoned theoretically using statistics. And then the main factors that influence the WOP distribution were sifted out by the progressive regression analysis. At last the optimized chains of adaptability with which the WOP will be introduced from mountain to urban area and of most suitable place on which certain plants will be introduced were defined. In order to enrich the capital Beijing's afforestation materiels, this paper offers a reliable basis in terms of theory.

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(L* = 97, a* = 1, b* = 9) ( Fig. 2B ). In Chaoyang City, Liaoning Province, the flowering period of the cultivar starts in early May and usually lasts for 20 d. Thus, ‘Yan Ya’ is suitable for urban afforestation. In addition, the fruit and kernels of

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boards, and joinery ( Duan et al., 2019 ). In addition, it has appreciably ecological value and is widely used in mountain afforestation, urban greening, and ecological restoration projects. Furthermore, natural plant essential oils rich in sterols, n

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afforestation in mountainous areas. However, there are not many cultivars with colored leaves in these species and the color of leaves in autumn and winter is not ideal for the landscape. A number of scientific research institutes and enterprises have introduced

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’ begins to blossom in early May, which usually lasts for 25 d. Consequently, ‘Yan Xia’ is an attractive choice for urban afforestation in northern China. Fig. 1. Morphological characteristics of ‘Yan Xia’: ( A ) racemose inflorescences and ( B

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Lagerstroemia (crape myrtle) has a wide geographical range, extending from Southeast Asia to Australia. These plants have been widely used in urban landscapes because of their longevity ( Wang et al. 2021 ), bright flowers ( Anderson 2006 ), long

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and is widely used in gardens, urban green spaces, and coastal beaches in China ( Jin et al., 2014 ; Li et al., 2020 ; Qin, 2011 ). In nature, two S. sebiferum genotypes occur, the grape type and chicken claw type, with different ecological

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Caravaca, F. Figueroa, D. Alguacil, M.M. Roldan, A. 2003 Application of composted urban residue enhanced the performance of afforested shrub species in a degraded semiarid land Bioresour. Technol. 90 65 70

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response of plant root to reduced soil water availability is necessary to be examined. The genus Taxodium is valuable for restoring degraded coastal areas, urban landscapes, and other greening projects ( Creech et al., 2011 ). In China, Taxodium hybrid

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networks, rural and urban greening, hydro-fluctuation belt, and swamps along rivers, playing vital roles in water and soil conservation ( Conner and Inabinette 2005 ; Jing et al. 2018 ; Wang et al. 2019 ; Yunsheng and Wenmei 2018 ; Yunsheng and Yihui

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