海拔区间(m)

分类数

分类结果(年份)

3700~3900

k = 2

1989~2017, 2018

k = 3

1989~2016, 2017, 2018

k = 4

1989~2015, 2016, 2017, 2018

3900~4100

k = 2

1989~2017, 2018

k = 3

1989~2016, 2017, 2018

k = 4

1989~2015, 2016, 2017, 2018

4100~4300

k = 2

1989~2017, 2018

k = 3

1989~2009, 2010, 2011~2018

k = 4

1989~2008, 2009, 2010~2011, 2012~2018