收藏本站
《Agricultural Science & Technology》 2017年07期
收藏 | 投稿 | 手机打开
二维码
手机客户端打开本文

The Spatio-temporal Evolution and Effect Factors of Cultivated Land Fragmentation in Jiangsu,China

Yan SUN  Ligang LYU  Rui WANG  Yunpeng ZHANG  
【摘要】:Based on the land use change data obtained from the interpretation of remote sensing images in 1985, 1995, 2005 and 2008, the research applied principal component analysis, Markov chain and ESDA method, and took cultivated land patch as the basic unit of landscape. A comprehensive measure of the fragmentation of cultivated land was made in Jiangsu counties and its temporal and spatial evolution characteristics and driving process from the perspective of landscape ecology were discussed. The results are as follows:(1)The overall fragmentation of cultivated land in Jiangsu Province presents that the eastern coastal areas are low, the interior of the west is high, the fragmentation of northern and southern Jiangsu is high, while the fragmentation of mid-Jiangsu is low.(2)The degree of fragmentation of cultivated land in most area of southern Jiangsu and midJiangsu showed an upward trend, while the fragmentation of cultivated land in northern Jiangsu showed a downward trend from 1985 to 2008. The degree of agglomeration of cultivated land is weakened continuously, the area of high value agglomeration is decreasing and the trend of "polarization" is weakening.(3) Topographic condition is the decisive factor for the formation of the difference pattern. The change of rural residential land, cultivated land and the scale of urban land use plays a role on the cultivated land fragmentation index, among them, the change of rural residential land scale has the most significant effect on cultivated land fragmentation.
【作者单位】School
【关键词】Land use Land fragmentation Landscape ecology ESDA Jiangsu Province
【基金】:Supported by National Natural Science Foundation of China(41301651,41401629) a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions
【分类号】:F323.211
【正文快照】:
Supported by National Natural Science Foundation of China(41301651,41401629);aProject Funded by the Priority Academic Program Development of Jiangsu HigherEducation Institutions.*Corresponding author.E-mail:liganglv2005@qq.comReceived:May 4,2017 Accepted

 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62791813
  • 010-62985026