草业学报Issue(5)：217-223,7.DOI:10.11686/cyxb20150525
基于 VDDT 的红原县草地景观动态变化模拟
Dynamic simulation of landscape change using VDDT in Hongyuan County
摘要
Abstract
Based on remote sensing images of Hongyuan County collected between 2000 and 2010,a landscape classification map and grassland resource database were produced using ENVI software.In addition,9 disturb-ance types were chosen to simulate the landscape succession to the year 2020 using the United States depart-ment of Agriculture Vegetation Dynamics Development (VDDT)tool based on the transition probability for 2000 -2001.The results showed that:1)In the 20 years,grassland decreased by about 824 km2 ,and forest by 191 km2 ,however,the unutilized area was predicted to increase by about 89 km2 ;2)The VDDT tool provided an acceptable simulation of the landscape succession as indicated by the Hongyuan County land use maps for 2000 and 2010 [R 2 =0.9325(Area),R 2 =0.8833(Number)];3)The simulation showed an obvious degenera-tion trend for grassland in Hongyuan county.Factors affecting the future landscape pattern and rate of grass-land degeneration were also analyzed.关键词
草地景观/草地资源/变化/动态模拟Key words
landscape/grassland resource/variation/dynamic simulation引用本文复制引用
张雪莲,干晓宇,道里刚,张洪轩,董奎,游成铭,符佩斌,干友民..基于 VDDT 的红原县草地景观动态变化模拟[J].草业学报,2015,(5):217-223,7.基金项目
国家自然科学基金青年科学基金项目（51108284），春晖计划项目，四川省科技厅项目（Z2006-1-61003，07JY029-024）和四川省科技厅支撑项目（13ZC1635）资助。 （）
