Research & reports

Zhuoran Yan, Wenbo Li, Lingxue Yu, X W Li, Kun Bu, HuanJun Liu · npj Urban Sustainability · China (Changchun)

This study investigated the summer impact of peri-urban agriculture (PUA) on surface urban heat island (SUHI) mitigation across China using time-series satellite observations and a coupled land-atmosphere model for Changchun City. It found that PUA management changes with urbanization pressure, and widespread agricultural marginalization near cities significantly impacts SUHI during summer. Larger cities derive less thermal benefit from PUA, although an agricultural intensification scenario showed a limited average cooling effect of 0.07–0.16 °C on urban cores.

Gang Wang · Agricultural History · China (Shanghai)

This historical analysis of Shanghai's vegetable supply system examines the limitations of peri-urban agriculture. In the early 1950s, Shanghai relied on distant rural areas for vegetables, shifting to suburban production in 1958 after rural sources were cut off. Efforts to sustain this suburban-centric system faced challenges, and government attempts to phase out the planned economy in the 1980s had limited effect. By the early 1990s, the suburban-centric system was abandoned, leading to a return to nonlocal vegetable predominance.

Liu Xinyun, Zhao Jianya, Zhang Yanglan, Wang Shu · Rural and regional development · China (Guangdong)

A study using 2017–2022 panel data in Guangdong Province, China, investigated urban agriculture's (UA) contribution to food self-sufficiency in highly urbanized regions. By categorizing cities by urbanization rate and analyzing spatial-temporal patterns in grain, vegetable, and fruit self-sufficiency, findings showed critically low grain self-sufficiency in high-degree urbanized cities. Despite incremental gains in UA productivity, urban yields for grains and vegetables lagged behind non-urban areas, indicating a limited contribution.

Sreejith Aravindakshan, Hage Aku, Michi Tani · · India

This study investigated factors inducing the emergence, sustenance, and sustainability of urban agriculture using primary data from urban farming households in Kerala and Arunachal Pradesh, India. The research indicates that urban agriculture has provided questionable environmental gains and has not significantly improved urban food security, especially among the poorer sections.

Rini Fitri, Achmad Yozar Perkasa, Hinijati Widjaja, Olivia Seanders, Reza Fauzı · Tekirdağ Ziraat Fakültesi Dergisi · Indonesia (Jakarta)

This research evaluated the sustainability of urban farming development in Petamburan, Central Jakarta, using a descriptive qualitative methodology and Multi Dimension Scaling (MDS) approach. While urban residents generally have knowledge and support for urban agriculture, the analysis of four dimensions (ecological, economic, social, technological) indicated that urban farming in Petamburan is not sustainable. The sustainability index was very low, categorized as destructive and unsustainable across ecological (14.55%), economic (13.85%), social (13.94%), and technological (13.43%) dimensions.

Yihang Hu, Junbiao Zhang, Yangmei Zeng, Jie Li · Land Degradation and Development · China

A study in Zhejiang Province, China, examined the impact of climate factors on agricultural production efficiency using a pooled OLS model. While precipitation production potential showed a significantly positive impact, the effects of temperature, evapotranspiration, and insolation were not significant or exhibited poor stability. Furthermore, the benefits of precipitation potential varied, with only a few cities experiencing significant improvements.

Shrabana Mazumder, Joydeep Saha, Gouranga Nandi, Mrinmoyee Naskar, Jibananda Gayen, Debajit Datta · SN Applied Sciences · India

A study of the Kolkata Metropolitan Area, India, used free and open-source geospatial software and multi-temporal databases to assess land use/land cover change from 1990 to 2020, focusing on the transformation of urban and peri-urban agricultural land, and projected cropland change to 2030 using an artificial neural network module (MOLUSCE). Built-up areas persistently expanded into croplands, wetlands, vegetation, and water bodies throughout the period, with an estimated loss of 181.11 sq km of cropland between 1990 and 2020, concentrated in the northern, eastern, and south-eastern parts of the study area. The 2030 projection indicates a further loss of 15.46 sq km, bringing the cumulative cropland loss to 37.39% of its 1990 extent under current socio-economic and administrative conditions.

Zulfadhli Nasution · · Indonesia (Jakarta, Bandung, Bogor)

This study investigated the relationship between urban farming communities and food sovereignty in Jakarta, Bandung, and Bogor, Indonesia. The findings suggest that the discourse of food sovereignty has not been exposed to urban farming communities. This is attributed to urban farming having different historical roots and social and political characteristics compared to the food sovereignty movement.

Yansui Liu · · China

China's agricultural structure adjustment from 1997 to 2000 focused on comprehensive adjustments of quality, varieties, industrial, and regional structures. While distinctive agriculture increased by 3.1% during this period, the effects of the adjustment varied significantly due to regional comparative advantages. Notably, foodstuff crop seeding areas dropped by 3.97% and foodstuff yield by 6.47% nationally, with visible drops in 22 provinces, leading to a warning that loosening vigilance on food security necessarily leads to a significant drop in China's food security.