Fig. 2. (a)The habitat change in
future and (b) the statistics of habitat change in province
Prediction
models for future scenarios show the decrease of suitable regions (Bay
et al., 2018).
The
area most prone to qualitative change in future is the boundary zone
with low altitude between suitable and unsuitable areas.
The
most loss of habitat is mainly located in the southern China, including
the
Hunan
province, the Guangxi Zhuang Autonomous Region and Guangdong province.
Hunan will be the province with highest habitat loss in future with
losing 26,361 \(\text{km}^{2}\) accounting
for
20.74% of the current total habitat area in
Hunan.
Guangxi
Zhuang Autonomous Region will loss 19767\(\text{km}^{2}\) accounting for
18.50% of the current total habitat area in Guangxi. Guangdong province
will loss 12985\(\text{km}^{2}\) accounting for 11.78% of the current
total habitat area in Guangdong. The abatement of habitat is common in
China except some places
(Fig.2).
The
most gain of habitat is located in the southeast China, including
Jiangsu province, Zhejiang province and Shandong province. The habitat
area will rise 5396\(\ \text{km}^{2}\) in Jiangsu province, 3460\(\ \text{km}^{2}\) in Zhejiang province and 2970\(\ \text{km}^{2}\) in
Shandong province.
In
this study, the research content of 7 orders of migratory birds revealed
an obvious bias trend in the population centroid of habitat. In future
climate scenarios, the entire population centroid will moved to the
northeast, and all the migratory birds will move from their potential
habitats to higher altitudes (Pacifici et al., 2017). The mean
suitability is shown the decline in future (Fig.S3).
Table
3. The shift situation of migratory birds.