Examining the soil erosion responses to ecological restoration programs and landscape drivers: A spatial econometric perspective

Jiang，Chong1,2,3; Zhao，Lingling1,2; Dai，Jialing1,2; Liu，Haimeng4; Li，Zhouyuan5; Wang，Xinchi6; Yang，Zhiyuan7; Zhang，Haiyan4; Wen，Meili1,2; Wang，Jun1,2

2020-12-01

10.1016/j.jaridenv.2020.104255

JOURNAL OF ARID ENVIRONMENTS   影响因子和分区

0140-1963

1095-922X

Topsoil erosion is a widespread and major threat to terrestrial ecosystems that leads to environmental deterioration. Monitoring soil erosion dynamics and understanding the driving mechanisms are of great significance for optimizing ecological restoration programs and combating land degradation. We apply a widely used soil erosion assessment model to quantify the changes in soil erosion on the Loess Plateau (LP) in response to afforestation-induced vegetation cover and land use/cover changes. Furthermore, we examine the relationship between landscape metrics and soil erosion using spatial econometric approach. The results indicate that soil erosion in the LP substantially decreased through afforestation efforts, while the observed sediment load declined significantly as a result of soil and water conservation programs. A number of largescale ecological programs altered the spatial configuration and structural composition of the landscape from different aspects, which disturbed the formation and transportation of soil erosion, eventually resulting in a reduction in soil loss. The spatial association between landscape metrics and soil erosion indicated that properly fragmented landscapes can effectively decrease soil erosion. Due to the spatial spillover, soil erosion in one county can be affected by soil erosion in adjacent counties. Therefore, the spillover effect between counties should not be ignored, and the responsibility for formulating and implementing solutions to combat land degradation should not fall solely on individual local governments. Preferably, the cooperation between different regions should be strengthened as a critical way to improve the efficiency of programs combating land degradation.

Land degradation Landscape metric Loess plateau Soil erosion Spatial econometric model

SCI ; SSCI

英语

其他

Guangdong Academy of Sciences (GDAS)' Project of Science and Technology Development[2020GDASYL-20200301003][2019GDASYL-0103001] ; National Natural Science Foundation of China[41901258] ; Guangdong Science and Technology Program[2018B030324002]

Environmental Sciences & Ecology

Ecology ; Environmental Sciences

WOS:000571194500007

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD

ENVIRONMENT/ECOLOGY

2-s2.0-85089345108

Scopus

1.Guangdong Open Laboratory of Geospatial Information Technology and Application,Guangzhou Institute of Geography,Guangzhou,510070,China
2.Key Lab of Guangdong for Utilization of Remote Sensing and Geographical Information System,Guangzhou,510070,China
3.School of Earth and Environmental Sciences,The University of Queensland,Brisbane,4072,Australia
4.Institute of Geographical Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing,100101,China
5.Institute of Ecology,College of Urban and Environmental Sciences,Key Laboratory for Earth Surface Processes of the Ministry of Education,Peking University,Beijing,100871,China
6.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
7.Department of Infrastructure Engineering,The University of Melbourne,Victoria,Parkville,3010,Australia

Jiang，Chong,Zhao，Lingling,Dai，Jialing,et al. Examining the soil erosion responses to ecological restoration programs and landscape drivers: A spatial econometric perspective[J]. JOURNAL OF ARID ENVIRONMENTS,2020,183.

Jiang，Chong.,Zhao，Lingling.,Dai，Jialing.,Liu，Haimeng.,Li，Zhouyuan.,...&Wang，Jun.(2020).Examining the soil erosion responses to ecological restoration programs and landscape drivers: A spatial econometric perspective.JOURNAL OF ARID ENVIRONMENTS,183.

Jiang，Chong,et al."Examining the soil erosion responses to ecological restoration programs and landscape drivers: A spatial econometric perspective".JOURNAL OF ARID ENVIRONMENTS 183(2020).