浑善达克沙地重度沙化区与干旱梯度空间相关性初探  

A Primary Study on the Space Correlation Between Serious Sand Damaged Zone and Drought Gradient in Hunshandake Sand-land

作　　者：王永利[1] 云文丽 王炜[3] 梁存柱[3] 

机构地区：[1]中国科学院东北地理与农业生态研究所 [2]内蒙古气象局气象科研所,呼和浩特010051 [3]内蒙古大学生态与环境科学系,呼和浩特010021

出　　处：《干旱区资源与环境》2008年第4期122-126,共5页Journal of Arid Land Resources and Environment

基　　金：国家自然科学基金项目(30330120,30360016)资助

摘　　要：根据浑善达克沙地及其毗邻地区16个气象台站自1965以来的气象数据,结合地面考察与实地测定,对浑善达克沙地的重度沙化区与干旱梯度的空间相关性及原因进行了研究。结果表明:气候分区-2中出现了东部的重度受损区域主要是由于这一区域的降水量与草甸草原区的降水持平,但热量条件更为优越,适合农垦,所以成为农牧交错带。但沙地基质的流动性决定了在这一区域进行农业生产的不可持续性,大面积沙地被开垦为农田后又被弃耕,出现大面积的次生裸沙地。气候分区-4中出现了浑善达克沙地中面积最大的重度受损区,这一区域气候特点属于典型草原到荒漠草原的过渡类型,沙地的原生植被以多年生草本和旱生灌木为主。由于强度放牧以及相对匮乏的降雨造就了本区内的大面积沙化。By the meteorological data of 16 weather stations in Hunshandake sand -land and neighboring region since 1965, combined with the zone and drought gradient showing the serious sand field survey, a primary study on the space correlation between serious sand damaged in Hunshandake sand - tand was made. The results showed ： the subarea - 2 of climate damage mainly because of the precipitation of this area keeps an equal pace with the grassland and the heat condition of this area is more superior, so it is suitable for farming and became a interlaced agro -pasturing area. But the mobility of the sand soil determines that agriculture can＇t be sustainable in this area. The large area of sand land is abandoned naked sand land. The subarea -4 of climate showed since cultivated for farming, and the largest serious sand damaged then abandoned to become zone in Hunshandake sand -land. This region belongs to transitional type of the typical to the desert grassland. The natural vegetation in the sand ground relies mainly on the perennial herbaceous and the drought shrub. The intensity grazing and the relatively deficient rainfall has brought up the large area desertification in this district.

关 键 词：浑善达克沙地 干旱梯度 重度沙化区 空间相关性 

分 类 号：X24[环境科学与工程—环境科学]