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| Yang, Jin-wei; Li, Jia-min. |
| The grey forecast and the sustainable use evaluation are conducted on the data of farmland resources from 2010 to 2020 in Pingingshan City by using the area of farmland land from 1999 to 2010 and by applying the gray forecast and land pressure system. The results show that from 2010 to 2020 the quantity of farmland resources maintains balance; the minimum per capita farmland in Pingdinshan stays around the lower limit of per capita amount of farmland in China; the pressure of farmland is rather huge and the farmland protection is not so optimistic. Therefore, in order to realize the sustainable use of land resources in Pingdinshan City, the government should try to improve the efficiency of farmland use and implement stricter land protection system. as... |
| Tipo: Journal Article |
Palavras-chave: Farmland in Pingdingshan; City; Grey forecast; Minimum area of farmland; Land pressure; Sustainable development; China; Agribusiness. |
| Ano: 2010 |
URL: http://purl.umn.edu/102373 |
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| Argañaraz,Carina I.; Gleiser,Raquel M.. |
| ABSTRACT Urbanization has a great impact on the diversity of living organisms. Spiders, for example, have been shown to respond negatively (some orb weaving species) and positively (ground dwelling species) to urbanization. The effects of urbanization on crab spiders (Thomisidae) (sit-and-wait predators that generally ambush their prey on flowers and leaves) are not sufficiently known. This paper describes the Thomisidae community that inhabits green patches in a temperate Neotropical city, Cordoba, Argentina, and its surroundings, and ascertains whether there are differences in species richness, abundance and composition between urban and exurban sites. Samples were collected from 30 sites during the summer and spring of 2013 and 2014, using the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arachnid; Biodiversity; City; Richness; Turn-over; Urbanization. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100319 |
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