Quantitative Evaluation of the Impact of Vegetation Restoration and Climate Variation on Runoff Attenuation in the Luan River Basin Based on the Extended Budyko Model

Shuaijun Yue, Junchang Huang, Yali Zhang, Weiqiang Chen, Yulong Guo, Mingyue Cheng and Guangxing Ji ()
Additional contact information
Shuaijun Yue: College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
Junchang Huang: College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
Yali Zhang: College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
Weiqiang Chen: College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
Yulong Guo: College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
Mingyue Cheng: College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China
Guangxing Ji: College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, China

Land, 2023, vol. 12, issue 8, 1-14

Abstract: The occurrence of water scarcity and extreme hydrological events is becoming increasingly frequent worldwide. The river runoff process, as an important link in the water cycle of a basin, is an essential content of the study of hydrological processes in the basin. Vegetation is an influencing factor closely related to hydrological processes in a watershed. This article quantitatively analyzes the impact of vegetation restoration and climate variation on runoff in the Luan River Basin from 1982 to 2018. Firstly, trend analysis was conducted on runoff depth, precipitation, the Normalized Vegetation Index (NDVI), and reference evaporation. Then, Mann–Kendall mutation analysis and Pettitt mutation analysis were used to identify the year of runoff mutation. Finally, a Budyko model was constructed to quantitatively analyze the impact of vegetation and climate change on the runoff of the Luan River. The results showed that: (1) The runoff reduction rate of the Luan River was 1.2437 mm/a. The precipitation was increasing at a rate of 0.6977 mm/a. The reference evaporation rate decreased at a rate of 0.0977 mm/a. The annual growth rate of the Budyko parameter ( n ) was 0.0283. The annual growth rate of NDVI was 0.0022. (2) The coefficient of determination in the functional equation (a = 14.74, b = −3.4105) for NDVI and Budyko parameter ( n ) was 0.3297 ( p < 0.01). (3) The contributions of Pr , ET 0 , NDVI, and ( n ) to reduced flow were −17.49%, 1.46%, 35.25%, and 80.78%, respectively. The increase in vegetation would lead to a decrease in runoff. This study can clarify the impact of vegetation restoration on water resource security in the Luan River Basin.

Keywords: Luan river; runoff; climate; human; Budyko model; NDVI (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/2073-445X/12/8/1626/pdf (application/pdf)
https://www.mdpi.com/2073-445X/12/8/1626/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jlands:v:12:y:2023:i:8:p:1626-:d:1220058

Access Statistics for this article

Land is currently edited by Ms. Carol Ma

More articles in Land from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().