Evaluation of water conservation function in the Xiongan New Area based on the comprehensive index method

Yanling Chen; Adu Gong; Tingting Zeng; Yuqing Yang

doi:10.1371/journal.pone.0238768

Evaluation of water conservation function in the Xiongan New Area based on the comprehensive index method

PLoS One. 2020 Sep 10;15(9):e0238768. doi: 10.1371/journal.pone.0238768. eCollection 2020.

Authors

Yanling Chen^{1

2

3}, Adu Gong^{1

2

3}, Tingting Zeng^{1

2

3}, Yuqing Yang^{1

2

3}

Affiliations

¹ Beijing Key Laboratory of Environmental Remote Sensing and Digital City, Beijing Normal University, Beijing, China.
² State Key Laboratory of Remote Sensing Science, Beijing Normal University, Beijing, China.
³ Faculty of Geographical Science, Beijing Normal University, Beijing, China.

Abstract

Water conservation is an important service function of ecosystems. A timely understanding of dynamic changes in the water conservation function is important for the protection and reconstruction of water resources. Based on remote sensing data, meteorological data, land cover data, and the "Technical Criterion for Ecosystem Status Evaluation" issued by the Ministry of Environmental Protection of the People's Republic of China, a comprehensive evaluation system was designed to assess the water conservation function of the Xiongan New Area from 2005 to 2015. The system created from four aspects, including ecological structure, ecological stress, water balance and landscape ecology. The results showed that from 2005 to 2015, the water conservation function of the Xiongan New Area first decreased and then increased, and the overall trend was upward. The increasing areas were mainly concentrated around Baiyangdian and near the grassland. Among all evaluated indicators, the precipitation compliance rate index fluctuated the most from -16.62 in 2010 to 6.70 in 2015. The evapotranspiration index was the largest in 2010 (6.47) and the smallest in 2005 (3.52). The Temperature Vegetation Dryness Index (TVDI) showed that the drought was the severest in 2010 and the least severe in 2015. However, the other indicators remain relatively stable. From the perspective of the spatial distribution, the water conservation function of the Xiongan New Area was gradually enhanced from north to south.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

China
Conservation of Water Resources / methods*
Conservation of Water Resources / statistics & numerical data
Droughts
Environmental Monitoring
Forests
Models, Statistical

Grants and funding

This study was supported by the National Key Research and Development Program of China (grant numbers 2017YFB0504102 and 2017YFC1502402 to Adu Gong) and the National Natural Science Foundation of China (grant number 41671412 to Adu Gong). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.