[Dynamic analysis of ecological footprint of Dongying City based on a modified model].
Taking the spatiotemporal heterogeneity of water-heat condition into consideration, the traditional ecological footprint (EF) model was modified with net primary productivity (NPP). In the meanwhile, water resource EF was calculated to complement the deficiency of water EF account which only included water's fishing function. The EF dynamics of Dongying City from 1996 to 2003 was analyzed by using the modified model. Based on traditional model, the EF of Dongying City in 1996-2003 increased from 1.766 hm2 to 2.644 hm2, and the ecological capacity (EC) decreased from 0.889 hm2 to 0.813 hm2; while based on the modified model, the EF increased from 2.819 hm2 to 3.776 hm2, and the EC decreased from 1.935 hm2 to 1.865 hm2. Comparing with that from traditional model, the ecological pressure calculated by the modified model was lesser, which suggested that to increase the utilization of water resource would alleviate the ecological pressure on the region. The modified EF model was more precise to reflect the natural resource utilization of Dongying City.
Yang
Hai-Bo
HB
Henan Provincial Key Laboratory on Information Network, Zhengzhou University, Zhengzhou 450001, China. zzutyhb@163.com
Wang
Zong-Min
ZM
Zhao
Hong-Ling
HL
Li
Ji-Ren
JR
D002681:China; D003247:Conservation of Natural Resources / Q000379:methods*; D018556:Crops, Agricultural / Q000254:growth & development; D004463:Ecology; D017753:Ecosystem; D004784:Environmental Monitoring / Q000379:methods*; D006802:Human Activities / Q000639:trends; D008962:Models, Theoretical; D014867:Water / Q000032:analysis
D014867:Water