Biogeographic and anthropogenic factors shaping the distribution and species assemblage of heritage trees in China

Huang, Li; Cheng, Jin; Zhen, Mingming; Zhou, Lei; Qian, Shenhua; Jim, Chi Yung; Lin, Dunmei; Zhao, Liang; Minor, Jesse; Coggins, Chris; Chen, Bo; Yang, Yongchuan

doi:10.1016/j.ufug.2020.126652

Cited by 22 publications

(15 citation statements)

References 47 publications

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“…Urban residents highlight the practical applications of urban greenspace that accommodate to the individuals [39]. Studies of trees further demonstrated the dominance of species with attractive and emblematic qualities [40].…”

Section: Variation Of Aboveground Tree Biomass In Urban Functional Unitsmentioning

confidence: 99%

The Connections between Above-Ground Biomass and Plant Diversity of Roadside Trees, Density and Diversity on Different Types of Roads in Karachi

Nizamani¹,

Bhatti²,

Cheng³

et al. 2021

Pol. J. Environ. Stud.

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Although Karachi city is one of the world's fastest growing cities and considered one of the largest cities of the world, not much is known about its roadside trees. The roadside trees of different types of roads (e.g. Wide roads, Medium roads) in Karachi city of Sindhi, Pakistan were studied. Based on the field sample survey, tree species diversity of different types of roads were examined through different diversity indexes. Furthermore, the relationship between above ground biomass and biodiversity was studied by linear regression model. A total of 180 plots were surveyed, which were divided into three main types of roads. The most significant amount of tree biomass per unit area was found in Wide roads 4.27 kg/m 2 , followed by medium roads. The least biomass per unit area was found in the narrow roads, where trees biomass per unit area was 2.44 kg/m 2. A single or a small number of species dominate in the observed area that decline the species diversity. A nonnative species Conocarpus erectus revealed dominance which was followed by Guaiacum officinale on all types

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Section: Variation Of Aboveground Tree Biomass In Urban Functional Unitsmentioning

confidence: 99%

The Connections between Above-Ground Biomass and Plant Diversity of Roadside Trees, Density and Diversity on Different Types of Roads in Karachi

Nizamani¹,

Bhatti²,

Cheng³

et al. 2021

Pol. J. Environ. Stud.

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show abstract

“…A growing body of work has been carried out on reporting the species diversity and spatial distribution of urban heritage trees in a certain region recently. However, little is concerned with the underlying factors [30][31][32]. Generally, the factors influencing spatial distribution can be divided into two categories, including natural and human factors.…”

Section: Introductionmentioning

confidence: 99%

Species Diversity and Distribution Pattern of Heritage Trees in the Rapidly-Urbanizing Province of Jiangsu, China

Zhang

2021

Forests

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Heritage trees have important ecological, historical, and landscape values in cities. Rapid urbanization may cause dramatic change of ecosystem functions of cities, thereby inevitably affecting the growth performance of ancient trees. However, few studies have explored their species diversity and spatial differentiation on the medium scale in the scenario of urbanization in China. Here, we took Jiangsu Province in China, with developed economy in recent decades, as a typical case. Based on the provincial forest inventory data, we addressed the abundance, species richness, tree density, and species diversity of ancient trees in 13 cities, and their tree habitat, growth status, and tree age, as well. Then, we compared the spatial differentiation of tree attributes by 13 districts and nine tree habitats. We also applied detrended correspondence analysis (DCA) and redundancy analysis (RDA) to determine the leading factor influencing their distribution pattern. The 7678 heritage trees in Jiangsu belonged to 215 species. More than half of the trees were native with domination by Ginkgo biloba. Villages and farmlands accommodated the most heritage trees while parks and gardens harbored the most species. This indicates that sparsely-populated rural community and scenic areas with open space are conducive to accommodating more urban heritage trees. The tier 3 heritage trees (100–299 years) accounted for about 80% of the total. Overall, most ancient trees in Jiangsu grew well. The species diversity index (H) of 13 cities was between 1.98 and 3.39. The H value among the 13 cities was largely affected by elevation range shift, while the tree density by GDP per capita. DCA showed that the ratio of unique species was >40%, and that dominant species presented little habitat preference. Therefore, species diversity among different cities are affected by climate and topography, as well as human factors. With the accelerating urbanization process, tree habitat, cultural tradition, and urban history should be taken into consideration for management and conservation of heritage trees in the future.

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“…Notably, human preferences for certain species due to both cultural (e.g., banyan) and tangible (e.g., mango) benefits have likely imposed selection effects on urban tree assemblages (Blicharska & Mikusiński, 2014 ), and the effects of these preferences may be higher in areas with higher population density like a governmental‐institutional and residential areas. Within a local plant species pool, species with tangible and cultural values have often been selectively maintained over less desirable species (Huang et al., 2020 ). Species that are deliberately selected and put under conscious human care are an integral component of the tree biodiversity of Haikou and AGB.…”

Section: Discussionmentioning

confidence: 99%

Positive relationships among aboveground biomass, tree species diversity, and urban greening management in tropical coastal city of Haikou

Nizamani

Harris

Cheng

et al. 2021

Ecology and Evolution

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Within urban green spaces, tree species diversity is believed to correlate with aboveground biomass, though there is some disagreement within the literature on the strength and directionality of the relationship. Therefore, we assessed the relationship between the biodiversity of woody species and the aboveground biomass of woody plant species in the tropical, coastal city of Haikou in southern China. To accomplish this, we obtained comprehensive tree and site data through field sampling of 190 urban functional units (UFUs, or work units) corresponding to six types of land uses governmental‐institutional, industrial‐commercial, park‐recreational, residential, transport infrastructure, and undeveloped area. Based on our field data, we investigated the relationship between tree species diversity and aboveground biomass using multiple regression, which revealed significant relationships across all five types of land uses. Aboveground biomass in green spaces was also correlated with anthropogenic factors, especially time since urban development, or site age, annual maintenance frequency by human caretakers, and human population density. Among these factors, maintenance is the strongest predictor of aboveground biomass in urban green space. Therefore, this study highlights the critical role of maintenance of urban green space in promoting both aboveground biomass and woody biodiversity in urban ecosystems and, consequently, on urban ecosystem services. Our findings contribute to a deeper understanding of the ecosystem services provided by communities of woody plant species in urban areas.

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Biogeographic and anthropogenic factors shaping the distribution and species assemblage of heritage trees in China

Cited by 22 publications

References 47 publications

The Connections between Above-Ground Biomass and Plant Diversity of Roadside Trees, Density and Diversity on Different Types of Roads in Karachi

The Connections between Above-Ground Biomass and Plant Diversity of Roadside Trees, Density and Diversity on Different Types of Roads in Karachi

Species Diversity and Distribution Pattern of Heritage Trees in the Rapidly-Urbanizing Province of Jiangsu, China

Positive relationships among aboveground biomass, tree species diversity, and urban greening management in tropical coastal city of Haikou

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