干旱区生态环境知识资源中心(Arid): 定边县土地利用动态变化研究

Arid

	定边县土地利用动态变化研究
其他题名	Study of Land Use Change in Dingbian County
	李忠锋 1; 王彦丽 2
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2004
卷号	27 期号:4 页码:520-524
中文摘要	根据1986年和2000年2期TM影像解译资料,运用地理信息系统的空间分析和数理统计功能以及景观分析软件FRAGSTATS分析了定边县土地利用变化的数量变化、变化速度等特征,以及各类型之间的转化情况和景观指标变化特点.结果表明:15年间,定边县土地利用类型发生明显变化,耕地、林地分别增加48 769.23hm2和 3 654.93hm2;草地减少43 763.01hm2;各类型间的转化突出表现为草地向耕地与林地的转化;景观指标变化分析表明景观结构异质程度下降,景观类型有向单一化或非均衡化方向发展的趋势.
英文摘要	Land use and land cover change (LUCC) forms major aspect of global change on both regional and global scales. Both bio-geographical and the socio-economic factors drive it, so LUCC is highly comprehensive and regional. At the same time, LUCC plays a direct role in the global environmental change, so it becomes the focus of programs established by different international organizations such as IGBP, IHDP and WCRP. The main foci of LUCC research are land use dynamics, land cover dynamic and regional and global models. This paper takes Dingbian county as an example. Dingbian county is located in the Western-most part of Yulin prefecture, between 107°15’and 108°22’N,36°49’and 37°53’E. It covers an area of 6 847km2. Climate type is temperate and temperate semi-arid continental monsoon climate. Mean annual air temperature is about 7.9"C . Mean annual precipitation is 316. 9mm, with most of the rainfall occurring in July and August, only little falls between November and January and has large annual and seasonal amplitudes. Located in the transitional zone from agricultural to husbandry areas. Dingbian County not only has its special spatial pattern in physical geography, but also has typical characteristics of fragile ecosystem and differentiation rule in ecology. Depending on 1986 and 2000 TM images and other data, we achieved the land-use change data after interpretation. This paper analyzed the situation of land-use change in temporal and spatial aspects with the GIS and statistic methods. Then this paper analyzed the situation of landscape change with FRAGSTATS 3.3, the most famous landscape structure analysis program. Various landscape metrics are calculated at class and landscape levels. The results show that: in recent 15 years the cultivated land and the forest land increased by 48 769.23hm2 and 3 654.93hm2 respectively, the grassland decreased by 43 763. 01hm2,The change rate of forestland is most high. In the direction of land-use change the conversion from grassland to cultivated land and forestland is prominent. The results also show that the landscape structure changed dramatically during the past 15 years. The decrease of Shannon’ s diversity index and evenness index manifested that the landscape heterogeneity and landscape diversity decreased. It shows the intensive management and reconstruction of landscape by human beings.
中文关键词	土地利用变化 ; 定边县 ; 马尔可夫矩阵
英文关键词	GIS FRAGSTATS land-use change GIS Dingbian county FRAGSTATS Markov matrix
语种	中文
国家	中国
收录类别	CSCD
WOS类目	REMOTE SENSING
WOS研究方向	Remote Sensing
CSCD记录号	CSCD:1807207
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/205034
作者单位	1.中国科学院寒区旱区环境与工程研究所, 兰州, 甘肃 730000, 中国; 2.咸阳师范学院地理科学系, 感阳, 712000
推荐引用方式 GB/T 7714	李忠锋,王彦丽. 定边县土地利用动态变化研究[J]. 中国科学院西北生态环境资源研究院,2004,27(4):520-524.
APA	李忠锋,&王彦丽.(2004).定边县土地利用动态变化研究.干旱区地理,27(4),520-524.
MLA	李忠锋,et al."定边县土地利用动态变化研究".干旱区地理 27.4(2004):520-524.