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Title of Journal: Reg Environ Change

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Abbravation: Regional Environmental Change

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Springer Berlin Heidelberg

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DOI

10.1002/mus.1172

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1436-378X

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Spatial assessment of vegetation vulnerability to

Authors: Haifeng Zheng Guoqiang Shen Xingyuan He Xingyang Yu Zhibin Ren Dan Zhang
Publish Date: 2014/11/21
Volume: 15, Issue: 8, Pages: 1639-1650
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Abstract

Drought is considered as one of the main forces driving current and likely future ecosystem productivity loss and vegetation mortality Therefore understanding where when and which vegetation type would be most vulnerable to drought is a prerequisite for developing effective adaptation strategies Based on accumulated standardized precipitation index calculated from April and normalized difference vegetation index obtained from satellite images we evaluated regional vegetation vulnerability across Northeast China to drought at different stages of summer June July and August when plant growth is highly affected by drought conditions The findings indicated that vegetation vulnerability to drought varied noticeably with vegetation growth stages and geographical areas Vegetation growth at early stage up to June was most vulnerable to accumulated drought while it was least vulnerable until the period of peak greenness in August A similar spatial pattern of drought vulnerability was observed in different vegetative stages with higher vulnerability in the west south and some parts of northeast east of the study region The pattern is closely associated with land use types Generally cropland wetland and saline and alkaline land showed a much higher vulnerability as vegetation growing on them had low ground cover and was more affected by accumulated drought conditions Our results identified the vegetative growth stages and growing areas likely to exhibit high vulnerability to drought and might help improve the basis both for vegetation management and for the development of specific drought adaptation optionsWe thank Dr Neil McLaughlin Agriculture and AgriFood Canada for helping with English revisions This research was supported by the Foundation of The CAS/SAFEA International Partnership Program for Creative Research Teams KZZDEWTZ0709 Foundation for Excellent Young Scholars of Northeast Institute of Geography and Agroecology Chinese Academy of Sciences DLSYQ13004 and National Natural Science Foundation of China 41371194 41001053 We extend gratitude to the anonymous reviewers who provided many constructive comments on improving the manuscript

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