Details

Autor(en) / Beteiligte

• Hao, Shuai
• Sun, Caizhi
• Song, Qiangmin

Titel

Evaluation of water ecological footprint and water ecological pressure based on ESTDA model in China

Ist Teil von

• Sheng tai xue bao, 2021, Vol.41 (12), p.4651

Ort / Verlag

Beijing: Science Press

Erscheinungsjahr

2021

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• In this paper, the 3 D water ecological footprint model was adapted to measure the water ecological footprint size, depth, water ecological carry capacity, and water ecological pressure among 31 provinces in China from 2000 to 2018 from the perspective of water footprint. The Exploratory Time-Space Data Analysis(ESTDA) model was used to analyze the spatial change characteristics of water ecological footprint size, depth and water ecological footprint pressure in 31 provinces of China. The results showed that:(1) during the study period, the total water ecological footprint of China indicated a fluctuating and ascending tendency. The water ecological carrying capacity fluctuated greatly, and the spatial distribution pattern presented a trend of gradually decrease from southeast to northwest.(2) The water ecological footprint size and water ecological carry capacity changed simultaneously, and were close to the upper limit of flow capital that water resources can provide. There were great differences of water ecological footprint depth in provinces during study period. The water ecological footprint depth of 15 southern provinces was 1, while the rest of the provinces needed to use the water resource stock capital to make up for the shortage of water flow capital.(3) The area with water ecological pressure index less than 1 coincided with the area with depth of 1 of the water ecological footprint. The regions with water ecological pressure index greater than 1 were mainly distributed in North China and Northwest China.(4) The LISA(Local Indicators of Spatial Association) time path showed that the overall spatial pattern of the water ecological footprint size, depth and water ecological pressure had strong stability; the stability of the three local spatial structure in spatial dependence direction was strengthened in turn. The spatial integration of spatial pattern evolution presented water ecological footprint depth>water ecological pressure>water ecological footprint size, in terms of space. The provinces with positive and co-growth of water ecological footprint were mainly concentrated in southern, while the areas with positive and co-growth of water ecological footprint depth and water ecological pressure were distributed in north and northwest China. The spatial distribution pattern of each feature showed strong path dependence and locking characteristics.