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Utilizing Mechanisms of Plant Community Assembly for Herbaceous Planting in Ecological Restoration of Urban Land


Researchers randomly sampled the restored site (8m x 12m) in June 2018. Credit: Yuan Jia, Qian Shenhua, You Fengyi, Zhang Zhaoliang, Yin Yuan

Brownfield restoration has become a leading topic in research on urban ecosystem management. Improving brownfield ecosystems through appropriate bioremediation approaches can provide urban landscapes and habitats with healthy ecological potential. Currently, the lagging theory and technical development of brownfield vegetation restoration, single-cause species selection, neglect of community structure and composition of ecological functions have become major bottlenecks for brownfield restoration.

Providing plant community assembly mechanisms for theoretical support, this paper proposes a novel turfgrass technical framework for ecological restoration of urban structure fields, which includes careful topographical design, adaptive species selection, symbiosis structure design, construction of quasi-nature community structure, and in-situ cultivation.

This research selected a brown field site located in Hechuan District, Chongqing City to apply herbal cultivation, and evaluate the environmental benefits after restoration. The results showed that the severely degraded vegetation transformed into a herbaceous community with multi-species symbiosis and stable structure, effectively improving its ecological functions such as storm water retention and biodiversity conservation.

This research can provide scientific evidence and reference technology model for urban brown field recovery, and contribute to the enhancement of urban ecological networks and ecosystem resilience.

This research proposed a vegetation aggregation pattern to enhance plant-fauna symbiosis by simulating natural community structure, and used in-situ mixed seeding combined with seedling cultivation to create a well-symbolic, self-maintaining herbaceous community with enhanced biodiversity and attractive landscape. Cultivation was carried out in the study area from October 2017 to March 2018.

Ecological farming design for brown field in Senkai Road, Hechuan District, Chongqing City in this paper is an exploratory research that addresses complex ecological challenges in brown fields, including infertile soil, pollution, and weeds. After restoration, a site that was subject to environmental stress, swelled by invasive species, and severely decreased in species richness and ecosystem services is now transformed into a healthy grassy community providing functions such as runoff retention and biodiversity conservation with improved structure and landscape aesthetics.

The proposed technical framework of turfgrass for ecological restoration of urban urban fields—steps such as careful topographical design, adaptive species selection, symbiosis structure design, semi-natural community structure construction, and in situ planting—is an innovative application case in China. This research aims to provide scientific evidence and a technical reference model for structural field habitat restoration, biodiversity conservation, and aesthetic enhancement, in order to contribute to the improvement of the urban ecological network and ecosystem resilience.

Research published in Frontiers of landscape architecture.

more information:
Yuan, J. et al, Herbal cultivation for ecological restoration of urban urban fields based on plant community aggregation mechanisms, Frontiers of landscape architecture (2023). DOI: 10.15302/J-LAF-1-020069

Provided by Higher Education Press

the quote: Herbaceous Farming for Ecological Restoration of Urban Lands Based on Mechanisms of Assembly of Plant Communities (2023, May 5) Retrieved May 5, 2023 from https://phys.org/news/2023-05-herbaceous-ecological-urban-based-mechanisms. html

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