scholarly journals Urban forest carbon stock and biodiversity assesment at Nagan Raya Regency

2022 ◽  
Vol 951 (1) ◽  
pp. 012071
Author(s):  
Subhan ◽  
A Anhar ◽  
A M Muslih ◽  
U H Ar-Rasyid ◽  
S Maimunah ◽  
...  
Keyword(s):  
Carbon Stock ◽  
Open Space ◽  
Central Government ◽  
Urban Forest ◽  
Urban Community ◽  
Mineral Soil ◽  
Michigan State University ◽  
State University ◽  
Small Tree ◽  
Forest Carbon Stock

Abstract Urban forest at Nagan Raya Regency is located in the central government and becomes a green open space that provides many benefits both directly and indirectly for the entire community in the region. Nagan Raya urban forest has various types of trees that usually found in low land mineral soil, such as Vitex pubescens locally known as Mane and Artocarpus blumei locally known as Tarap. Besides, the urban forest of nagan raya has become the habitat of several species of primates, reptiles and birds. In order to calculate the carbon stock of Nagan Raya urban forest, we use the “carbon calculator” tool developed by Michigan State University. By using nested plot of 5 m x 5 m for pile (small tree) category; 10 m x 10 m plot for pole (medium tree) category and 20 m x 20 m plot for tree category. With 12 total plots that are systematically spread throughout Nagan Raya urban forest. Averagely, carbon stock at Nagan Raya urban forest is 353,72 tCha-1. Naturally, trees in the climax condition tend to have less increment and will rotten. We suggest that maintenance and replanting of Nagan Raya urban forest is necessary to replace plants that have entered the category of “old” or low increment with made regeneration types to optimize the function of Nagan Raya urban forest as one of the buffer systems for the urban community.

scholarly journals PEMENUHAN LUASAN HUTAN KOTA SEBAGAI PENCEGAH MASALAH LINGKUNGAN DI SURABAYA

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Martika Dini Syaputri ◽  
Nany Suryawati
Keyword(s):  
Urban Areas ◽  
Local Governments ◽  
Open Space ◽  
Central Government ◽  
Urban Forest ◽  
Urban Forests ◽  
Community Needs ◽  
Management And Development ◽  
The Government ◽  
The City

AbstractEnvironmental problems in urban areas are a problem that never stops. That every community needs a healthy life, but this seems difficult to become a reality for urban communities because the population continues to increase every year so that land conversion occurs which results in increased air and water pollution. Therefore, the central government hopes that each region or region can provide RTH 30% of the city area. The purpose of this study is to analyze the enforcement of the City Forest Regulations in Surabaya and to find out the efforts of local governments in fulfilling urban forest land in urban areas. This study uses a normative juridical method. As part of RTH, the development of urban forests in Surabaya is very much needed by the community, therefore cooperation between the government and the community is needed in the management and development of urban forests. Fulfillment of urban forest areas in Surabaya can be done by maximizing the form of urban forest that has been regulated based on the City Forest Regulation, either in the form of channels, groups or scattered.Keywords: city forest; green open space; urbanAbstrakMasalah lingkungan hidup diwilayah perkotaan merupakan masalah yang tak kunjung berakhir. Bahwa setiap masyarakat membutuhkan hidup sehat, namun hal tersebut seolah sulit menjadi kenyataan bagi masyarakat perkotaan yang disebabkan karena jumlah penduduk yang tiap tahun meningkat sehingga terjadi pengalihfungsian lahan yang berakibat pada semakin meningkatnya pencemaran udara maupun pencemaran air. Oleh karena itu, pemerintah pusat mengharapkan bagi setiap wilayah atau daerah menyediakan RTH 30% dari luasan kota. Tujuan dilakukannya penelitian ini adalah untuk menganalisa pemberlakuan Perda Hutan Kota di Surabaya serta mengetahui upaya pemerintah daerah dalam memenuhi lahan hutan kota pada wilayah perkotaan. Penelitian ini menggunakan metode yuridis normatif. Sebagai bagian dari RTH, pengembangan hutan kota di Surabaya sangat dibutuhkan oleh masyarakat oleh karenanya diperlukan kerjasama antara pemerintah dengan masyarakat dalam pengelolaan dan pengembangan hutan kota. Pemenuhan luasan hutan kota di Surabaya dapat dilakukan dengan mamaksimalkan bentuk dari hutan kota yang telah diatur berdasarkan pada Perda Hutan Kota, yakni dapat dengan bentuk jelaur, mengelompok maupun menyebar.

Ultrastructural Studies of Bovine Respiratory Disease Complex

1975 ◽  
Vol 33 ◽  
pp. 428-429
Author(s):  
James C.S. Kim
Keyword(s):  
Michigan State University ◽  
State University ◽  
Diagnostic Laboratory ◽  
Ultrastructural Studies ◽  
Bovine Respiratory Diseases ◽  
Etiologic Agents ◽  
Diagnostic Difficulties ◽  
The Subject ◽  
Capillary Walls ◽  
Alveolar Capillary

Bovine respiratory diseases cause serious economic loses and present diagnostic difficulties due to the variety of etiologic agents, predisposing conditions, parasites, viruses, bacteria and mycoplasma, and may be multiple or complicated. Several agents which have been isolated from the abnormal lungs are still the subject of controversy and uncertainty. These include adenoviruses, rhinoviruses, syncytial viruses, herpesviruses, picornaviruses, mycoplasma, chlamydiae and Haemophilus somnus.Previously, we have studied four typical cases of bovine pneumonia obtained from the Michigan State University Veterinary Diagnostic Laboratory to elucidate this complex syndrome by electron microscopy. More recently, additional cases examined reveal electron opaque immune deposits which were demonstrable on the alveolar capillary walls, laminae of alveolar capillaries, subenthothelium and interstitium in four out of 10 cases. In other tissue collected, unlike other previous studies, bacterial organisms have been found in association with acute suppurative bronchopneumonia.

scholarly journals Effects of Urban Forest Types and Traits on Soil Organic Carbon Stock in Beijing

Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 394
Author(s):  
Xinhui Xu ◽  
Zhenkai Sun ◽  
Zezhou Hao ◽  
Qi Bian ◽  
Kaiyue Wei ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Stock ◽  
Urban Forest ◽  
Coniferous Forest ◽  
Predictor Variable ◽  
Urban Forests ◽  
Least Squares Regression ◽  
Forest Types ◽  
Organic Carbon Stock

Forests can affect soil organic carbon (SOC) quality and distribution through forest types and traits. However, much less is known about the influence of urban forests on SOC, especially in the effects of different forest types, such as coniferous and broadleaved forests. Our objectives were to assess the effects of urban forest types on the variability of SOC content (SOC concentration (SOCC) and SOC density (SOCD)) and determine the key forest traits influencing SOC. Data from 168 urban forest plots of coniferous or broadleaved forests located in the Beijing urban area were used to predict the effects of forest types and traits on SOC in three different soil layers, 0–10 cm, 10–20 cm, and 20–30 cm. The analysis of variance and multiple comparisons were used to test the differences in SOC between forest types or layers. Partial least squares regression (PLSR) was used to explain the influence of forest traits on SOC and select the significant predictors. Our results showed that in urban forests, the SOCC and SOCD values of the coniferous forest group were both significantly higher than those of the broadleaved group. The SOCC of the surface soil was significantly higher than those of the following two deep layers. In PLSR models, 42.07% of the SOCC variance and 35.83% of the SOCD variance were explained by forest traits. Diameter at breast height was selected as the best predictor variable by comparing variable importance in projection (VIP) scores in the models. The results suggest that forest types and traits could be used as an optional approach to assess the organic carbon stock in urban forest soils. This study found substantial effects of urban forest types and traits on soil organic carbon sequestration, which provides important data support for urban forest planning and management.

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