排序方式: 共有47条查询结果,搜索用时 15 毫秒
11.
12.
14.
15.
通过对贫困地区旅游开发过程中土地利用变化的分析,提出了土地利用变化的驱动力和评价原则,并根据旅游地生命周期理论,对未来土地利用的趋势和方向进行了分析,同时指出在开发旅游时应注意的问题.以安徽省舒城县百丈岩旅游区为例,在分析旅游开发可行性的基础上提出了本区的旅游发展战略,最后分析了旅游开发对土地利用结构变化的影响. 相似文献
16.
17.
苏勤 《长江流域资源与环境》1996,5(4):321-326
黄山是我国十大风景名胜区之一,但全区经济发展水平十分落后,属安徽省贫困地区之一,本文对黄山贫困山区的资源特点与存在问题进行了综合分析,指出了本区贫困落后的主要原因,并就治贫开发提出了相应对策。 相似文献
18.
19.
Feng Zhiming Zhang Weike Yang Yanzhao 《中国人口.资源与环境(英文版)》2009,7(4):51-58
With population growth and increasing pressure on land resources, land carrying capacity (LCC) and food safety have been attracting great attention worldwide. From the point of man-grain relationship and by establishing LCC and land carrying capacity index (LCCI) models, this article firstly analyzes the spatial-temporal dynamics of LCC of China from 1949 to 2005 at county, provincial and national levels. Choosing 2005 as a representative year, this article then evaluates the LCC of 264 pastoral regions (semipastoral regions), 663 urban regions and 592 poverty stricken regions of the country. The results show that: (1) from 1949 to 2005, with the increase of grain production, the LCC of China has been improved conspicuously, but due to the rapid population growth, the production can only maintain a low level grain consumption; (2) over the past 25 years (1980-2005), the number of population overloading provinces decreased from 23 to 15 and the mangrain relationship has been improved gradually, but there were more overloading provinces than surplus provinces in China; (3) at county level, there were 1572 overloading counties in 1980 accounting for 68.26% of the total counties of the country and where were 649 million people lived, while in 1990, 2000 and 2005, the number of overloading counties were 1066, 1133 and 1087 respectively, which shows that the man-grain relationship has been improved obviously during the past 25 years; as for spatial distribution, the surplus counties were mainly concentrated in agriculture developed regions, such as Northeast Plain, North China Plain, middle and lower Reaches of the Yangtze River Plain, and overloading counties were mainly located in regions with poor natural environment and low grain production capacity, such as Northwest China, Tibetan Plateau and Loess Plateau and economically developed urban regions, such as Beijing, Tianjin and Shanghai; (4) animal husbandry improved greatly the LCC of pastoral and semi-pastoral regions, while urban regions were overloading for increasing population pressure and more than half of poverty stricken regions were overloading due to critical natural environment and poor economic conditions. 相似文献
20.
保护生态环境、维护生态系统的动态平衡 ,既是经济发展的基石 ,又是推动可持续发展战略的重要举措 ,在贫困地区显得尤为重要。1 贫困地区生态建设的必要性生态建设的目的是为了经济和社会的持续发展 ,贫困地区搞好生态建设对于经济发展具有十分重要的意义。首先 ,可以保护人类赖以生存和发展的物质基础 ,不断提高资源的利用率 ,为经济发展提供丰富的资源条件。其次 ,生态环境的好坏 ,还决定了区域经济发展的潜力。再次 ,有利于贯彻农业生产因地制宜的原则 ,合理调整工农业生态结构和布局 ,提高土地和其他资源利用率 ,提高工农业产品的产量… 相似文献