摘要
为了解张掖市甘州区土地利用及景观格局时空变化特征,以3期Landsat TM/ETM＋遥感影像为数据源,利用RS、GIS技术和景观生态学方法对研究区2001-2010年土地利用和景观格局时空变化特征进行了分析研究,结果表明：在2001-2007年期间草地和建设用地面积增加,裸地和水体面积减少;在2007-2010年期间建设用地急剧增加,增加7.81 hm^2,裸地和耕地面积减少。从整个研究期间来看,草地和建设用地面积增加,耕地和裸地面积减少,但耕地和裸地面积减少比重较小。从景观水平上看,景观破碎化程度加剧,景观异质性和景观多样性增加,景观空间连接性逐渐减弱,人类活动对景观生态格局变化造成的影响愈加显著。从类型水平上看,建设用地面积增加,破碎化加剧;水体的自然景观特征增强,水体空间分布结构趋于均衡,裸地的破碎化进一步加剧。
In order to understand the temporal and spatial patterns characteristics of land use and landscape change in Ganzhou district of Zhangye city,using three Landsat TM / ETM images as the data source,analyzed the temporal and spatial variation features of land use and landscape by RS,GIS technology and landscape ecology methods from 2001 to 2010,the results showed that the grassland area and construction land significantly increased,the bare land and water area decreased during 2001 - 2007.construction land increased dramatically during 2007 - 2010,increasing the area of 7.81 hm^2,the bare land and the arable land area decreased. In the entire study period,the grass and construction land area increased,the arable land and the bare land area decreased,but the reducing proportion of arable land and bare land area was small. At the level of landscape,landscape fragmentation degree,landscape heterogeneity and landscape diversity increased,the impact of human activities on the ecological landscape pattern change significantly increased. At the class level of landscape,construction land area increased and fragmentation intensified. Water enhanced natural landscape feature and the spatial distribution structure of water more balanced,fragmentation of bare land further exacerbated.
出处
《江西农业学报》
CAS
2016年第6期109-113,共5页
Acta Agriculturae Jiangxi
基金
中国农业科学院科技创新工程项目"寒生
旱生灌草新品种选育"(CAAS-ASTIP-2014-LIHPS-08)
中央级公益性科研院所基本科研业务费专项"基于地面观测站的生态环境监测与利用"(1610322015016)
