中国水土保持科学2017，Vol.15Issue(6)：34-43,10.DOI:10.16843/j.sswc.2017.06.005
县域土地利用景观格局演变及其生态响应——以河南省新郑市为例
Ecological response to change in land use at the county level: A case study of landscape patterns in Xinzheng City, Henan Province
摘要
Abstract
[Background] Rapid economic development and population growth in China have led to both environmental deterioration and ecological disturbance in different regions.By studying the effects of change in landscape patterns on Ecological Services Value (ESV),we can gain a better understanding of the changes in regional environments and ecologies.This understanding can lead to the creation of a healthier environment and more harmonious ecosystems.[Methods] We examined remotely sensed satellite images of Xinzheng City that were obtained in 2005,2010,and 2015.Changes in land use were quantified in order to create landscape patterns for Xinzheng City over ten years.Then we analyzed the changes in landscape patterns using values of typical landscape pattern indexes.A method developed from Costanza's calculation was used to estimate ESV.We also analyzed the effects of landscape pattern change on ESV.[Results] Farm land and build-up land were the two main landscape types in Xinzheng City.The total area of farm land decreased,but the total area of build-up land increased significantly over ten years.The landscape types were mainly changed from farm land,forest land and grassland to the build-up land and waters.The patch density,the maximum patch index and the spatial pattern of different landscape types changed in varied degrees,while the landscape diversity index increased as the dominance index and the extent of fragmentation decreased..The ESV of Xinzheng City declined slowly at first and then declined sharply.The total decrease in ESV of Xinzheng City was 34.94 × 106 RMB Yuan over ten years,of which the ESV of farm land decreased by a maximum of 34.06 × 106 RMB Yuan.The ESV of build-up land showed the most significant change,an increase of 59.17％.In terms of spatial distribution,the ESV of Xinzheng downtown was low,while in the southwestern and northwestern areas the ESV was high.During the 10 years from 2005 to 2015,the areas with low ESV grew,and thus the spatial distribution of ESV became more uneven.[Conclusions] This study shows that the reduction of farm land and forest land and the increase in build-up land are the main reasons for ecological deterioration and the related decrease in total ESV.We provide a scientific assessment of the ecological benefits of soil and water conservation projects and a scientific baseline for the overall planning of future land use in Xinzheng City.关键词
景观指数/景观格局/生态服务价值/新郑市Key words
landscape index/landscape pattern/ecological service value/Xinzheng City分类
管理科学引用本文复制引用
王新闯,陆凤连,吴金汝,王世东..县域土地利用景观格局演变及其生态响应——以河南省新郑市为例[J].中国水土保持科学,2017,15(6):34-43,10.基金项目
国家自然科学基金“基于多源遥感数据的森林生物量估算与空间尺度转换研究”(41401500) （41401500）
中国博士后科学基金“煤矿区土地生态质量评价及变化机理研究”(2015M580629) （2015M580629）
中国博上后科学基金“基于遥感的矿区土地复垦质量评价”(2016M590679) （2016M590679）
河南省高等学校重点科研项目“典型煤矿区土地生态质量时空变化规律与机理研究”(16A420003,17A420001) （16A420003,17A420001）
河南省科技攻关项目“基于中原经济区建设的生态优先条件下土地资源优化配置”(142102310513) （142102310513）
河南省高校科技创新团队支持计划“煤矿区土地整治与生态修复”(18IRTSTHN008) （18IRTSTHN008）
