干旱区生态环境知识资源中心(Arid): 内蒙古伊金霍洛旗薪炭结构演变对土地沙漠化的影响

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	内蒙古伊金霍洛旗薪炭结构演变对土地沙漠化的影响
其他题名	Impacts of Household Fuel Structure on Land Desertification in Ejin Horo Banner
	宋乃平1 ; 张凤荣 2; 李保国 2
来源期刊	资源科学
ISSN	1007-7588
出版年	2005
卷号	27 期号:3 页码:86-91
中文摘要	抽样调查数据的统计表明,近50年来伊金霍洛旗农牧户生活用薪炭结构经历了以沙蒿等生物质薪炭为主向煤炭与树枝树条的矿物质和生物质多元薪炭结构的变化;某种薪炭在整个薪炭结构中的比重越大,其变异系数越小,表明农牧户之间薪炭结构的同构性强.在20世纪50年代～70年代沙漠化强烈发展时期,30%～70%的新增沙漠化土地是由樵采沙蒿等生物质薪炭引起,随着薪炭结构多元化,这一比例逐步降低,引起的沙漠化土地面积也大幅度下降.薪炭结构的变化对土地沙漠化逆转的作用显著.如果农民收入不增加,随着煤炭等矿物质燃料价格的上升,樵采生物质薪炭导致沙漠化的威胁就会加大;因此,有必要通过技术创新进一步提高非生物质的风能、太阳能在薪炭结构中的比例.
英文摘要	As far as we known, lopping woods and shrub for fuels in semiarid and sub-humid regions is one of the important factors of desertification. For investigating household fuel structure, 150 farmer families were visited in Ejin Horo Banner, Inner Mongolia. The statistical result shows that the household fuel structure had evolved from biological matter dominance to both mineral and biological matter dominance in the last fifty years. Statistics show that the higher the proportion of certain fuel in fuel structure, the less the variance of such fuel among the household fuel structure. The average proportion of Artemisia ordosica in the household fuel structure reduced rapidly from over 60% in the 1950s and 1960s to 10% in the 1990s in the 20th century. On the contrast, proportions of coal and tree branch in the fuel structure increased from 22% and 10% to 40% and 50% respectively in the same period. The increase of tree branch’ s proportion in the fuel structure was clue to reforestation that provided a lot of branches. The increase of coal’ s proportion in the fuel structure was due to economic development that made fanners have some money to buy coal. Because of logging Artemisia ordosica , available rangeland decreased from 46 x 104hm2 in the 1950s to 29.6 x 104hm2 in the 1970s in the 20th century; and the desertification land spread from 3 X 104hm2 to 20 X 104hm2 at the same time. At least thirty to seventy percent desertification land was caused by cutting vegetation as firewood, especially cutting Artemisia ordosica in the 1950s to 1970s that is severe desertification period in the 20th century. With the fuel structure evolved to diversity, the farmers did not depend on the woods, shrub and grass for firewood, the desertification land caused by cutting vegetation was reduced rapidly. The evolvement of fuel structure played an important role in combating desertification in Ejin Horo Banner in the last 50 years. But the household fuel structure is confronted with some potential trend to go back to the 1950s and 1970s in the last century with farmers’ income stagnancy and coal price increasing. If the farmer’s income does not increase, with the mineral fuel’s price rising and/or the tree branch’s price rising from industry development, the threatening to desertification caused by cutting vegetation as firewood will increase. There is constant relationship among poverty, cutting vegetation as firewood and desertification. Developing economy and increasing farmers’ income are the main way to combat desertification in Ejin Horo Banner. It is also a good way to use the plenty wind energy and sunny energy to replace firewood as cooking and heating fuel in the semiarid region.
中文关键词	薪炭结构 ; 土地沙漠化 ; 农牧户抽样调查 ; 伊金霍洛旗
英文关键词	Relationship Household fuel structure Desertification Ejin Horo Banner
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:1988451
来源机构	宁夏大学 ; 中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/207105
作者单位	1.宁夏大学, 银川, 宁夏 750021, 中国; 2.中国农业大学资源与环境学院, 北京 100094, 中国
推荐引用方式 GB/T 7714	宋乃平,张凤荣,李保国. 内蒙古伊金霍洛旗薪炭结构演变对土地沙漠化的影响[J]. 宁夏大学, 中国农业大学,2005,27(3):86-91.
APA	宋乃平,张凤荣,&李保国.(2005).内蒙古伊金霍洛旗薪炭结构演变对土地沙漠化的影响.资源科学,27(3),86-91.
MLA	宋乃平,et al."内蒙古伊金霍洛旗薪炭结构演变对土地沙漠化的影响".资源科学 27.3(2005):86-91.