河北省曲周县景观格局演变及生态服务价值响应研究

Response of ecosystem service values to the landscape patterns change in Quzhou County,Hebei Province

为对县域土地利用规划与生态保护政策制定提供理论依据,以曲周县为例,依据1985、1999和2012年的土地利用数据,采用景观格局分析法、生态服务价值定量评估法结合相关性及敏感度分析,对曲周县1985—2012年的景观格局、生态服务价值变化以及景观指数对生态服务价值的响应机制进行了探究。结果表明:1)研究期内曲周县景观破碎度和景观异质性增加,景观多样性降低,人类活动对景观格局的影响程度呈加强态势;2)生态服务价值总体减少6 704.11万元,且1999年后生态服务价值衰退速度较之前有所减缓,生态服务价值结构未发生较大变动;3)ESV与SHDI呈正相关,与NP、FN、D和AWMDF呈负相关,同时ESV对NP和FN变化缺乏弹性,对SHDI、D和AWMDF变化反应灵敏。研究认为,曲周县应降低景观的人为干扰力度,加强对景观多样性保护,提高县域整体生态效益。

The purpose of this study was to provide references for making county land use planning and policies on ecological protection. Landscape pattern analysis,quantitative evaluation method of ESV,and correlation and sensitivity analysis were used to explore the change of landscape pattern and ESV, the correlation between landscape pattern index and ESV of Quzhou County during 1985 - 2012 based on data of land use in 1985, 1999 and 2012 of Quzhou County. The results showed that： 1） The landscape fragmentation and heterogeneity increased, the landscape diversity decreased,and the influence of human activities on landscape pattern ,strengthened during 1985 - 2012 in Quzhou County,2） The total value of ecosystem services decreased by 67. 041 1 million yuan, and after 1999, the decline rate of ecological service value has slowed down compared with the previous. The ecological service value structure has not changed significantly^3） ESV was positively related to SHDI and negatively related to NP, FN, D,AWMDF, responded slowly to the change of NP, FN, and was sensitively to the change of SHDI, D, AWMDF. In conclusion, Quzhou should reduce human disturbance intensity of landscape and strengthen the protection of landscape diversity to improve the overall ecological benefits.