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黄河三角洲高效生态经济区土地利用变化及其与生境质量的相关性
贾艳艳1, 王少杰2, 刘福胜2, 于东明1
1.山东农业大学 林学院, 山东 泰安 271018;2.山东农业大学 水利土木工程学院, 山东 泰安 271018
摘要:
[目的] 对黄河三角洲高效生态经济区(以下简称"黄三角经济区")的生境质量开展研究,揭示人类活动对该区域生态环境的影响,为该区生态保护与发展提供一定参考。[方法] 基于2000,2010和2018年土地利用数据,采用InVEST模型、土地利用程度指数和双变量空间自相关模型等方法,分析黄三角经济区生境质量演变特征及其与土地利用变化的相关性。[结果] ①耕地和湿地为主要用地类型,建设用地和湿地不断增加,以耕地、草地、未利用地向建设用地和湿地转换为主要变化方向;②黄三角经济区生境质量整体上处于中等以上水平,中等、较高和高生境质量的面积达82%以上,并且生境质量趋于提升,但呈现较低、中等、较高减少,而高、低生境质量持续增加的"中段缩减,两端增长"发展特征;③黄三角经济区生境质量呈显著空间异质性,以湿地为主的滨海及黄河沿岸区域生境质量较高,而建设用地和耕地分布区生境质量较低;④土地利用程度与生境质量呈显著负相关性,且相关性不断增强。[结论] 在黄三角经济区高等级生境质量区应加强连通性保护,在生境退化严重的建成区应加强绿色空间建设以改善生境质量。
关键词:  土地利用程度  生境质量  InVEST模型  双变量空间自相关  黄河三角洲高效生态经济区
DOI:10.13961/j.cnki.stbctb.2020.06.031
分类号:X37;X826
基金项目:国家重点研发计划政府间国际科技创新合作重点专项课题“韧皮纤维作物在土壤可持续修复和工业用生物原料生产中的研究与应用”(2017YFE0195300)
Land Use Change and Its Correlation with Habitat Quality in High Efficiency Eco-economic Zone of Yellow River Delta
Jia Yanyan1, Wang Shaojie2, Liu Fusheng2, Yu Dongming1
1.Forestry College, Shandong Agricultural University, Tai'an, Shandong 271018, China;2.College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai'an, Shandong 271018, China
Abstract:
[Objective] The habitat quality of the high-efficiency eco-economic zone in Yellow River delta (YRD) was studied in order to reveal the impact of human activities on the ecological environment of the region and provide references for the ecological protection and development of the YRD.[Methods] Based on the land use data of the YRD in 2000, 2010 and 2018, the InVEST model, land use degree index and bivariate space autocorrelation model were used to analyze the spatial-temporal evolution characteristics of habitat quality and its correlation with land use change.[Results] ① Cultivated land and wetland were the main land use types of YRD. Construction land and wetland increased continuously. The main change direction was from cultivated land, grassland and unused land to wetland and construction land. ② The habitat quality of the YRD was above medium level on the whole. Medium, medium-high and high grades areas accounted for more than 82%, and the habitat quality kept improving. However, the habitat quality showed a "mid-course reduction and two-end growth" trend, in which the habitat quality of medium-low, medium and medium-high decreased while the habitat quality of high and low increased continuously. ③ The habitat quality of the YRD showed a significant spatial heterogeneity. The habitat quality of coastal and along the Yellow River areas dominated by wetland was higher, while that of construction land and cultivated land distribution area was lower. ④ There was a significant negative correlation between land use degree and habitat quality, and the correlation was increasing.[Conclusion] The connectivity protection should be strengthened for the high-grade habitat in YRD, and green space construction shuold be strengthened for the built-up areas with serious habitat degradation to improve the habitat quality.
Key words:  land use degree  habitat quality  InVEST model  bivariate space autocorrelation  high-efficiency eco-economic zone of the Yellow River delta