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a b s t r a c tUrban structural units (USUs) are work (or similar) units in urbanized areas. In this study, USUs based on urban land use and land cover were used to explain and compare urban ecological conditions within Beijing. This study focused on the spatial pattern of land use for different USUs in urban areas. The results showed that 453 USUs belong to 12 primary USUs and to 38 different secondary USUs. The percentage of built-up area was highest in those regions with hotels, and lowest in areas with cemeteries. The percentage of woodland area was highest in primary and middle schools, and the lowest in entertainment plazas. The percentage of grassland area was highest in farmland or orchards, and lowest in Siheyuan (courtyards). The percentage of green space is highest in lands dedicated to middle and primary schools, and lowest in areas with museums. There is no significant linear relationship between construction period and green space percentage in Colleges/Universities (R = 0.045, p = 0.806 > 0.05) and Parks (R = 0.13, p = 0.43 > 0.05). However, there was an inverted-U curve relationship with the relevant housing price in the residential area, a relationship that can be described by the equation: f = 17736.45 + 348.21x − 4.15 x 2 , p = 0.0022 < 0.05. This relationship implied that the socio-economic factors like housing prices may be a factor in determining the green space pattern of urban ecosystems in Beijing.

Food security is one of the leading issues of many governments globally. Kitchen gardening is the innovative project initiated by the Government of Punjab (Pakistan) to provide instant aid to dwellers by self-produced fresh vegetables. The present investigation was conducted in the district Bahawalpur. The objectives were to explore the main benefits of kitchen gardening, to identify the places used for this activity, to identify the growers' perceptions and to give suggestions to improve the project. Two urban and one rural tehsils of district Bahawalpur were selected as study areas. Secondary data were collected from several sources while primary data gathered through a mobile phone survey and analyzed by applying descriptive and inferential statistics using SPSS software. The findings have justified that dominant share of growers have sown the seed kits for vegetables production, mostly for home consumption and was satisfied with the quality and price of seed kit. Most of the growers certified the efficiency of the project in the regular provision of fresh and healthy vegetables. Hence, the project is a successful endeavor and still continuing in the province, benefiting the masses and encouraging urban agriculture. The outcome of the investigation is suggestions to further improve this project.