摘要
黄土高原地区北部风沙区(以下简称风沙区),地处黄土高原的北部,界于白于山以北、阴山以南、贺兰山以东、朔县—右玉—呼和浩特一线以西。该区以鄂尔多斯干燥剥蚀风沙高原为主体,包括北、西侧的黄河河套冲积平原、卫宁平原,西南部的宁夏南部山间盆地及东南部覆沙黄土丘陵的广大地区。位于东经104°15′—112°50′、北纬35°35′—40°15′之间,面积206855km^2,沙漠化土地面积117962km^2,占总土地面积的57％。区内风沙活动频繁,土地沙漠化严重,直接影响着本区的工农业生产和人民生活。尤其本区是我国优质煤炭基地,自西向东分布有灵武、神府—东胜、准格尔。
In this paper, a mathematical model of the process of desertification is put forward by analysing the causation of desertification: Y=M×F(P, W), and by mathematical changing, an equation to calculate the effects of natural and anthropological factors is given: m=y—αp—βw. The concept and calculating programme of the spring of winds and precipitation is raised.
By calculating, the effects of natural and anthropological factors is very different in the area and anthopological effects result the harnessed desertification during 1977 to 1986. The quantitative analysis provides scientific basis for researching and controlling desertification.
出处
《干旱区研究》
CSCD
北大核心
1991年第4期42-47,共6页
Arid Zone Research
