摘要
基于遥感技术(RS)和地理信息系统(GIS)平台,以1995和2004年两期LandsatTM遥感图像为基础数据源,运用景观生态学理论和方法研究生态景观格局动态变化,并定性、定量分析了土地利用和土地覆盖的时空演变,从自然因素和人文因素上探讨扎龙湿地区域的土地利用驱动力,研究结果表明:该区域呈现以沼泽地景观为基质的草地、耕地和盐碱地景观等相对为主体的交错湿地景观格局;各类生态景观斑块的数量、面积及空间位置都发生不同程度的变化,其中高盖度草地景观和盐碱地景观的景观面积和斑块数变化量远大于其它景观类型;自然环境是土地覆盖与土地利用分布的基础条件,土地覆盖格局指导人类对区域土地的利用;人文因素是土地利用变化的诱导因素,直接体现在人口数目的增加和土地利用类型和利用程度的改变;发展经济的同时,按照一定的规划原则对土地进行利用,做到土地的合理开发与保护并重,实现土地资源的永续利用和区域的发展。
The space-time changes of land use and covering were analysed quantitatively and qualitatively in terms of Landsat TM data during 1995 and 2004 based on GIS and RS techniques. The principle and technique of landscape ecology were used to study the landscape pattern change, and the land use driving force of Zhalong Wetland was discussed in terms of natural and human factors. Results show that the wetland is the matrix of the study region, and the mixed wetland landscape pattern is composed of wetland and relative principal parts of grassland, cropland and saline-alkali soil. The number, area and spatial position of different landscape types changed at different degrees, among which the landscape area and patch number of high cover grassland and saline-alkali soil changed more obviously than those of the other landscape patterns. Natural environment is the basic condition of land use and covering, and the land cover pattern directs human actions in land use and the human factors is the guiding factor for the land-use change, which can by directly shown in the change be- tween the increasing population and land-use type, land-use degree. With the support of economic development and plan- ning principles for land use, the sustainable utilization and development of land could realize by rational development and conservation of the land in the study region.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2007年第12期25-28,共4页
Journal of Northeast Forestry University
基金
黑龙江省自然科学基金项目(C200527)
关键词
景观格局
动态分析
土地利用
驱动力
Landscape patterns
Dynamic analysis
Land uses
Driving forces
作者简介
袁力，男，1968年10月生，东北林业大学林学院，副研究员。
