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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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中国典型石漠化地区土地利用与石漠化的关系
DOI: 10.11821/xb200606006, PP. 624-632
Keywords: 喀斯特,石漠化,土地利用,相关性,贵州省盘县
Abstract:
定量研究了贵州省盘县中南部峰丛洼地典型石漠化地区不同岩性的土地利用分布规律和不同土地利用类型的石漠化发生率。结果表明,难利用的、岩石裸露的石旮旯地在连续性石灰岩、石灰岩夹碎屑岩和石灰岩与白云岩互层分布区的比例很高。不同等级石漠化与不同土地利用类型和岩石类型存在着相关性,如坡耕地中以连续性石灰岩发生轻度石漠化的比例最高,其次是石灰岩碎屑岩互层分布区;研究区的轻度石漠化中,土地覆被以灌丛所占的比例最高,坡耕地占11.67%;中度石漠化中,土地覆被以中覆盖度草地所占比例最高;强度以上石漠化中,土地覆被以难利用地的石漠化比例最高。从1995到2000年,中覆盖度草地和难利用地中强度和极强度石漠化比例有所增加。基于上述研究,对研究区的石漠化土地覆被作了进一步的分类,指出了研究区的石漠化的形成过程和治理重点。
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