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干旱内陆沙区丘间地研究现状及存在问题 被引量:2

Research status and existing problems of interdune lowland in arid inland desert
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摘要 丘间地具有良好的生境条件,是沙丘生态系统中生物和非生物成分间动态作用的主要场所,是破碎化生境中的"生命岛",也是退化生境恢复的起点,在逆转生境退化和促进土壤发育等方面具有重要意义。从目前丘间地研究现状来看:(1)丘间地作为一种独立地貌类型,其概念不明晰、类型不清楚;(2)针对干旱区以风沙过程为主导的丘间地生态过程研究很少;(3)丘间地生态过程主导因子及其相互作用机制尚不清楚;(4)在沙漠化防治研究中,大多时候只注重沙丘的变化和沙丘区风沙活动,而忽略了丘间地对风沙活动的影响,很少将丘间地与沙丘联系起来作为沙丘系统进行整体研究。(5)人为干扰对丘间地生态系统演化过程的影响研究需要加强。(6)干旱内陆沙区的丘间地与海岸、湖岸区、半干旱区、湿润地区的丘间地差异明显,尤其是它作为干旱沙区人类生活的主要场所或农业生产的土地来源,但相关研究薄弱,亟待加强。加强干旱内陆沙区丘间地生态特征及其功能研究,对掌握干旱沙区生态系统演变过程和退化机制,保护沙区生物多样性、促进退化生态系统恢复和沙漠化防治意义重大。 The interdune lowland has good habitat conditions. It is the main place of the dynamic actions between biological and non-biological ingredients in dune ecosystems. It is called the “life island” of broken natural habitats, and is also the starting point for degraded habitat restoration. The interdune lowland plays a significant role in the reversal of habitat degradation and the promotion of soil development. Some conclusions can be made from the previous studies: ( 1 ) The concept and classification of interdune lowland, as an independent landform type, are not clear. (2) Very few studies have conducted on the ecological processes of interdune lowland which are mainly induced by wind and sand processes in arid regions. (3) The dominant factors of ecological processes of the interdune lowland and their interaction mechanism are unclear. (4) Few studies have focused on the relationship between dunes and interdune lowland as a whole dune system. Many researches explored the dune change and activity, while ignoring the influence of interdune lowland on sand activities in desertification combating. (5) The studies on the effects of human disturbance on the evolution of interdune lowland ecosystem need to be strength- ened. (6) The interdune lowland in arid area obviously differs from the coast, lakeshore, semiarid and humid regions. Especially, it is the main place of human life or sources of land for agricultural production in the arid desert region, so the relevant studies should be strengthened. It has a great significance to strengthen the ecological characteristics and functional studies of interdune lowland in the arid inland sandy area for mastering evolution and degradation mechanism of arid desert ecosystems, protecting the biodiversity of the sandy area and promoting the restoration of degraded ecosystems and desertification control.
出处 《生态学杂志》 CAS CSCD 北大核心 2014年第8期2245-2254,共10页 Chinese Journal of Ecology
基金 甘肃省自然科学基金项目(096RJZH015) 国家自然科学基金项目(31160116,41061030)资助
关键词 丘间地 生态过程 沙漠化 内陆 interdune lowland ecological processes sandy desertification inland
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