Multi-scale evaluation and multi-scenario simulation analysis of regional energy carrying capacity—Case study: China

2020 ◽  
Vol 734 ◽  
pp. 139440 ◽  
Author(s):  
Lihui Zhang ◽  
Qingyun Nie ◽  
Biying Chen ◽  
Jianxue Chai ◽  
Zhenyu Zhao
2021 ◽  
Vol 13 (4) ◽  
pp. 2163
Author(s):  
Shanning Lou ◽  
Jiao Ning ◽  
Cheng Zhang ◽  
Chunmei Wang ◽  
Wanhe Zhu ◽  
...  

Grassland agroecosystem plays a key role on resource cycling and sustainability of global ecosystem. Forage is the basic factor and core of the grassland agroecosystem. At a single scale, the most of forage evaluation remain in a state of qualitative or quantitative evaluation, and lack a series of quantitative evaluation at multi spatial scales and influence of society, environment and economy. This study collected dominant indicators at micro, plot, farm, ecoregional and macro scales to compile a systemic evaluation of forage in agroecosystems. A case study is presented for forage evaluation by using plot, farm, and regional data from an arid region of Gansu, China. Multi-scale evaluation of dominant factors (MSDF) was used to aggregate forage evaluation indicators. Results showed that the scale of evaluation had significant effects on the results of the evaluation. The evaluation results of the single index for the same forage species among plot, farm and ecoregional scales were different. Results implied that forage MSDF are needed to guide the evaluation of forage and then production of forage and herbivore in the future. An appropriate scale of evaluation could be selected in term of the forage production objectives and moreover, MSDF evaluation of forage should be used to improve the environmental, social and productive evaluation of forage in a grassland agroecosystems.


2018 ◽  
Vol 25 (1) ◽  
pp. 40
Author(s):  
Dini Aprilia Norvyani ◽  
Akhmad Riqqi ◽  
Agung Budi Harto ◽  
Sitarani Safitri

Spatial modelling using multi-scale grid system is adopted to determine the threshold and distribution pattern of regional carrying capacity. Water-provisioning service is used as a quantitative approach. Closed system was applied in which it was based solely on the potential of existing resources in the region without taking in to account the flow of material in or out of the system. Steps being taken include the distribution of water demand – of land and domestics – and supply; and the determination of carrying capacity status based on the threshold of water-provisioning services. A grid system with 5″×5″ resolution is used to accommodate the various sets and scale, of data. The result shows, 82.29% of Sumedang Regency; 68.43% of Cimahi City; 61.29% of Bandung City; 60.51% of Bandung Barat Regency; and 57.34% of Bandung Regency are still able to fulfil the demands of the population.


2020 ◽  
Vol 39 ◽  
pp. 101465
Author(s):  
Massimiliano Lega ◽  
John Kosmatka ◽  
Marco Casazza ◽  
Lucio De Maio ◽  
Davide Severino ◽  
...  

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