Vegetation coverage change and its response to ecological protection project in Fenhe River Basin

doi:10.7522/j.issn.1000-694X.2022.00144

Journal of Desert Research ›› 2023, Vol. 43 ›› Issue (3): 86-95.DOI: 10.7522/j.issn.1000-694X.2022.00144

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Vegetation coverage change and its response to ecological protection project in Fenhe River Basin

Xiaohong Ma¹^,²(), Fei Lin², Liming Yuan², Junjie Niu²

^1.Shanxi Collaborative Innovation Center for Coordinated Urban and Rural Development /, Taiyuan Normal University，Jinzhong 030619，Shanxi，China
^2.Research Center for Scientific Development in Fenhe River Valley, Taiyuan Normal University，Jinzhong 030619，Shanxi，China

Received:2022-09-27 Revised:2022-11-17 Online:2023-05-20 Published:2023-05-31

Abstract

Abstract:

Vegetation is an important component of terrestrial ecosystems， and it plays an important role in preventing desertification and conserving soil and water in arid and semi-arid regions. Fractional vegetation coverage （FVC）， in turn， is an important indicator of vegetation and ecological environment status. To understand the ecological status from 2000 to 2020 in Fenhe River Basin， this study examined the spatial distribution and temporal variations of vegetation coverage， investigated the vegetation response to ecological protection project. Our results demonstrate that：（1） The FVC increase from 55% in 2000 to 72% in 2020， with an increase rate of 0.87% per year， which is manifested with the increase of the high FVC area （FVC>60%）. The ecological environment quality of the region has been significantly improved. （2） Under the influence of ecological protection project， FVC increase in 77.1% of the area， and decrease in 1.7% of the area under the urbanization and mineral resources development. （3） The spatial and temporal variability of FVC are great， and the coefficient variation fluctuates between 0.01 and 2.20. The FVC is stable in original alpine forest area， valley agricultural area and urban construction. This study would provide a theoretical basis for formulating polices related to ecological environmental protection and sustainable development.

Key words: Fenhe River Basin, fractional vegetation coverage, ecological protection project

CLC Number:

X171.4

Xiaohong Ma, Fei Lin, Liming Yuan, Junjie Niu. Vegetation coverage change and its response to ecological protection project in Fenhe River Basin[J]. Journal of Desert Research, 2023, 43(3): 86-95.

Figures/Tables 12

Fig.1 Overview of the research area

Table 1 Classification of fractional vegetation coverage in Fenhe River Basin

等级	极低	低	中等	高	极高
植被覆盖度/%	0~20	20~40	40~60	60~80	80~100

Fig.2 The annual variations of fractional vegetation coverage in Fenhe River Basin from 2000 to 2020

Fig.3 The annual variations of fractional vegetation coverage in Fenhe River Basin from 2000 to 2020

Fig.4 The spatial distribution pattern and variations of fractional vegetation coverage in Fenhe River Basin

Fig.5 The spatial variations of fractional vegetation coverage in Fenhe River Basin from 2000 to 2020

Fig.6 The coefficient variation of fractional vegetation coverage in Fenhe River Basin from 2000 to 2020

Table 2 The change trend and its classification of fractional vegetation cover in Fenhe River Basin

变化趋势	面积/km²	百分比/%
极显著减少（K<0，P<0.01）	452.9	1.1
显著减少（K<0，0.01<P<0.05）	237.0	0.6
变化不显著（K=0或P>0.05）	8 474.5	21.2
显著增加（K>0，0.01<P<0.05）	3 931.0	9.8
极显著增加（K>0，P<0.01）	26 950.8	67.3

Fig.7 Benefits of ecological protection project in Fenhe River Basin during 2000 to 2020

Fig.8 Relationship between cumulative afforestation area in Shanxi Province and high vegetation （FVC>60%） coverage area in Fenhe River Basin from 2000 to 2020

Fig.9 The variation of construction land in Fenhe Rive Basin from 2000 to 2020

Fig.10 The temporal variation of vegetation coverage in the Loess Plateau

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Vegetation coverage change and its response to ecological protection project in Fenhe River Basin

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