Core Viewpoint - The increasing focus on urban biodiversity is linked to its role in enhancing quality of life and happiness for city dwellers, as urban green spaces serve as essential public services and recreational areas [1] Group 1: Urban Biodiversity and Its Importance - Urban green spaces, parks, botanical gardens, zoos, aquariums, and other facilities are crucial for urban biodiversity and public services, providing recreational and social opportunities for residents [1] - Significant efforts have been made in China to promote urban biodiversity protection, including biodiversity surveys, ecological restoration, and substantial growth in urban green space and greenway areas [1] Group 2: Challenges in Urban Biodiversity Development - Urban biodiversity development in China faces challenges such as habitat fragmentation due to inadequate urban planning, pollution leading to species extinction or migration, and the invasion of non-native species [1] - There is a lack of public awareness and participation in biodiversity protection efforts, indicating a need for increased engagement and education [1] Group 3: Strategies for Biodiversity Enhancement - Scientific urban planning should prioritize ecological principles, reserving ecological corridors and creating interconnected habitats through parks and wetlands [2] - Pollution control measures are essential for improving the living environment for urban biodiversity, including promoting green industrial transformation and strict regulation of emissions [2] Group 4: Invasive Species Management - A comprehensive system for managing invasive species is necessary to protect native species, including monitoring, quarantine measures, and regular removal of invasive species from urban areas [3] - The establishment of monitoring apps and public engagement initiatives can enhance the effectiveness of invasive species management [3]

Core Viewpoint - The article discusses the issue of invasive species in Guangdong Province, highlighting their ecological impact and the need for effective control measures [4][39]. Invasive Species Overview - Guangdong is one of the regions in China with the highest number of invasive species, with hundreds identified that threaten local ecosystems and agricultural safety [4][5]. - Invasive species can damage crops, outcompete native plants, and disrupt ecological balance due to the absence of natural predators [5][6]. Specific Invasive Species 1. Pomacea canaliculata (Golden Apple Snail) - Originally from the Amazon basin, this species was introduced to China in the 1980s and has rapidly spread in Guangdong's rice fields [10][11]. - It has a high feeding rate, consuming up to 40% of its body weight daily, primarily targeting young rice seedlings and vegetables, which severely affects crop emergence rates [12]. - The reproductive capacity is significant, with each snail capable of laying 200-1000 eggs multiple times a year, making control efforts challenging [13][15]. 2. Mikania micrantha (Mile-a-Minute Vine) - This perennial vine, native to Central America, has spread widely in Guangdong, particularly in forested areas and orchards [20][21]. - It grows rapidly, extending over 20 cm per day, and can smother native plants, leading to their death and causing severe ecological damage [22][24]. 3. Bidens pilosa (Spanish Needle) - Originally from tropical America, this species is now common in Guangdong's farmland and wastelands [29][30]. - It has strong adaptability and prolific reproduction, competing with crops for light, water, and nutrients, which can hinder agricultural productivity [31][32]. Control Measures - The article emphasizes the importance of public participation in controlling invasive species and provides specific strategies for managing the highlighted species [37][39]. - For Pomacea canaliculata, methods include manual collection and the use of specific pesticides while adhering to safety regulations [18][16]. - For Mikania micrantha, mechanical removal and targeted herbicide application are recommended to prevent its spread [26][28]. - For Bidens pilosa, early removal before flowering and the use of selective herbicides are suggested to minimize its impact on crops [34][36].