共查询到11条相似文献,搜索用时 78 毫秒
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Bruce K. Ferguson 《Journal of environmental management》1996,48(4):387-395
Land use design that recognizes the landscape attributes that characterize homeostatic health can emphasize them during land use change. The attributes of landscape health are the working mechanisms of all open systems, and can be observed in the homeostatic behavior of forests, deserts and floodplains. These attributes are openness, self-regulation, storage and diversity. The attributes of health comprise criteria for evaluating and guiding land use. To maintain landscape health, land use design can maintain and restore these mechanisms during change of moderate pace and scale. 相似文献
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本文用一种综合、定量的方法,评价了四川盆地农业自然环境的现状质量,得到了较之传统的定性描述更为科学、直观的评价结果。评价结果显示,四川盆地农业自然环境质量只属中等水平,而不是通常所言“农业自然条件优越”;130个县中只有15个的质量属良好,它们呈岛状分布;自然潜力质量与生态质量往往不匹配,因为人在开发利用自然资源的时候,往往造成生态质量的下降。 相似文献
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农村景观的自然-人为性与多样性特征研究 总被引:1,自引:0,他引:1
农村景观是人与自然共同作用的特殊场所。研究了农村景观的双重属性,即自然—人为性,以及多样性、异质性特征。根据这些本质属性,提出了我国新农村建设的新思路、科技着力方向和因地制宜政策。 相似文献
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对川东北-川西输气联络线工程对四川驷马省级自然保护区自然资源、自然生态系统和主要保护对象的影响进行了评估。其主要结论是:在施工期,四川驷马自然保护区的森林面积将减少,水体质量将降低,部分野生动物将受到损伤或远离现有的栖息地,部分植物个体将被采伐,生态系统结构将发生变化,主要保护对象也将受到一定的影响;在运营期,四川驷马自然保护区自然资源、自然生态系统和主要保护对象受联络线工程的影响较轻。为了减轻影响,从控制影响因素方面提出了一些建议。 相似文献
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一个城市的景观风格是该城市有形和无形环境的综合体现,是城市自然空间环境、城市文化内涵、民风民俗、建筑、古迹等城市构成要素的总和。从旅游发展的角度,通过对青神县城优越的地理区位、优美的山水城市空间环境、独特深厚的文化底蕴等优势条件的分析,提出其县城景观风格定位为“山水园林城市”的设想,并围绕突出“山、水、城、文化”等城市特色景观构成要素提出开发策略。 相似文献
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Herzog F Lausch A Müller E Thulke HH Steinhardt U Lehmann S 《Environmental management》2001,27(1):91-107
This investigation tested the usefulness of geometry-based landscape metrics for monitoring landscapes in a heavily disturbed
environment. Research was carried out in a 75 sq km study area in Saxony, eastern Germany, where the landscape has been affected
by surface mining and agricultural intensification. Landscape metrics were calculated from digital maps (1912, 1944, 1973,
1989) for the entire study area and for subregions (river valleys, plains), which were defined using the original geology
and topography of the region. Correlation and factor analyses were used to select a set of landscape metrics suitable for
landscape monitoring. Little land-use change occurred in the first half of the century, but political decisions and technological
developments led to considerable change later. Metrics showed a similar pattern with almost no change between 1912 and 1944,
but dramatic changes after 1944. Nonparametric statistical methods were used to test whether metrics differed between river
valleys and plains. Significant differences in the metrics for these regions were found in the early maps (1912, 1944), but
these differences were not significant in 1973 or 1989. These findings indicate that anthropogenic influences created a more
homogeneous landscape. 相似文献