干旱区生态环境知识资源中心(Arid): 干旱化与土地利用变化对中国北方草地与农牧交错带耕地自然生产潜力的综合影响评价

Arid

	干旱化与土地利用变化对中国北方草地与农牧交错带耕地自然生产潜力的综合影响评价
其他题名	Impacts of Land Use and Climate Change on Cultivated Land Potential Productivity in Farming-Pastoral Zone of North China
	赵媛媛; 何春阳; 李晓兵; 黄庆旭; 杨洋
ISSN	1000-3037
出版年	2009
卷号	24 期号:1 页码:123-135
中文摘要	气候和土地利用变化通过不同的方式影响耕地的自然生产潜力,目前在时空尺度上定量分析典型生态边缘区气候干旱和土地利用变化对耕地自然生产潜力综合影响的研究还比较薄弱.论文首先采用桑斯维特纪念模型(Thornthwaite - Memorial Model)对北方草地与农牧交错带地区耕地自然生产潜力进行了计算.然后结合气象数据,分析了干旱化对研究区耕地自然生产潜力的影响.又在遥感数据生成的1990,1995和2000年1km土地利用/覆盖数据基础上,分析了土地利用变化对耕地自然生产潜力的影响.结果发现1970～2006年研究区总体上呈现出较强的变干趋势,但波动明显,干旱导致耕地自然生产潜力在1990～1995年和1995～2000年分别减少了约16.6110~6t和19.5510~6t.1990～1995年和1995～2000年耕地增加率分别为2.64%和2.55%,在此基础上,耕地自然生产潜力分别增加了5.3610~6t和4.4810~6t.从整个研究区尺度来看,1990～1995年和1995～2000年耕地自然生产潜力分别减少了约11.2410~6t和15.0810~6 t.从基于气象站点的泰森多边形尺度来看,研究区的西北区域,主要包括陕西、宁夏和甘肃部分地区,耕地自然生产潜力对于气候变化比较敏感,而包括河北、山西部分地区在内的研究区华北南部区域和内蒙占北部主要受到土地利用变化的影响.
英文摘要	Climate warming and land use change simultaneously affect cultivated land natural potential productivity. At present, quantitatively analyzing and understanding the impacts of arid climate and land use on cultivated land potential productivity in typical region is relatively weak.Firstly, the paper obtained the change tendency of drought in Fanning-Pastoral Zone in Northern China (FPZNC) by using the meteorological data from 1970 to 2006. Then the cultivated land potential productivity (CLPP) and its variation feature were obtained and analyzed with the Thornthwaite-Memorial Model by using land use and land change data derived from Landsat TM data in 1990, 1995 and 2000. The conclusions are as follows : ( 1 ) Despite much obvious fluctuations,the FPZNC still showed a strong desiccation tendency on the whole in the past three decades. The desiccation made the CLPP decrease by 16.61 million tons from 1990 to 1995 and 19.55 million tons from 1995 to 2000. (2) The land use changes in the study area were dramatic and the cultivated land increased significantly from 1990 to 2000, the proportion of which is from 19.69% in 1990 to 20.21% in 1995 and 20.73% in 2000 and the increase rate is 2.64% and 2.55% respectively. The CLPP changes caused by the cultivated land increase are 5.36 and 4.48 million tons respectively. (3) Viewed from the scale of the whole FPZNC, the CLPP decreased year by year. It decreased by about 11.24 million tons from 1990 to 1995 and 15.08 million tons from 1995 to 2000; and viewed from the scale of Thiessen Polygons based on the meteorological stations,during 1990 - 2000, the area of land use change affected area was much larger than that of the climate change. The natural potential productivity in the provinces of Shaanxi, Gansu and Ningxia were greatly affected by the climate change, however, land use changes play an absolute dominant role in some regions of the provinces of Hebei and Shanxi.Consequently,when the government makes policies on cultivated land management,especially in the climate change sensitive region,the meteorological factors should be taken into consideration.
中文关键词	北方干旱化 ; 耕地自然生产潜力 ; 桑斯维特纪念模型 ; 土地利用变化
英文关键词	desiccation in northern China Thomthwaite-Memorial Model land use change natural potential productivity
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ECONOMICS POLICY
WOS研究方向	Agriculture
CSCD记录号	CSCD:3515789
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/224658
作者单位	北京师范大学, 地表过程与资源生态国家重点实验室, 北京 100875, 中国
推荐引用方式 GB/T 7714	赵媛媛,何春阳,李晓兵,等. 干旱化与土地利用变化对中国北方草地与农牧交错带耕地自然生产潜力的综合影响评价[J]. 北京师范大学,2009,24(1):123-135.
APA	赵媛媛,何春阳,李晓兵,黄庆旭,&杨洋.(2009).干旱化与土地利用变化对中国北方草地与农牧交错带耕地自然生产潜力的综合影响评价.,24(1),123-135.
MLA	赵媛媛,et al."干旱化与土地利用变化对中国北方草地与农牧交错带耕地自然生产潜力的综合影响评价".24.1(2009):123-135.