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SCIENCE CHINA Earth Sciences, Volume 62 , Issue 9 : 1461-1472(2019) https://doi.org/10.1007/s11430-018-9369-x

Spatiotemporal characteristics of the expansion of an urban agglomeration and its effect on the eco-environment: Case study on the northern slope of the Tianshan Mountains

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  • ReceivedNov 23, 2018
  • AcceptedMay 20, 2019
  • PublishedJul 3, 2019

Abstract


Funded by

the Major Program of National Natural Science Foundation of China(Grant,No.,41590842)

the Strategic Priority Research Program(A)


Acknowledgment

We sincerely appreciate the constructive comments and suggestions of the anonymous reviewers. This work was supported by the Major Program of the National Natural Science Foundation of China (Grant No. 41590842) and the Strategic Priority Research Program (A) of the Chinese Academy of Sciences (Grant No. XDA20040400).


References

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  • Figure 1

    Land use changes in the urban agglomeration on the northern slope of the Tianshan Mountains from 1980 to 2015.

  • Figure 2

    Ecological value contribution rates of different land types in the urban agglomeration on the northern slope of the Tianshan Mountains from 1980 to 2015.

  • Figure 3

    Schematic diagram showing changes in land use type in the urban agglomeration on the northern slope of the Tianshan Mountains from 1980 to 2015.

  • Figure 4

    Conversion of construction land to ecological land in the urban agglomeration on the northern slope of the Tianshan Mountains in 1980–2000 and 2000–2015.

  • Figure 5

    Schematic diagram of the conversion from construction land to ecological land in the urban agglomeration on the northern slope of Tianshan Mountains.

  • Table 1   Ecological values of different land use types in the urban agglomeration on the northern slope of the Tianshan Mountains

    Level I

    Number

    Level II

    Ecological value assignment

    Cultivated land

    11

    Paddy field

    0.30

    12

    Dry land

    0.25

    Forest land

    21

    Woodland

    0.95

    22

    Shrubbery

    0.65

    23

    Sparse woodland

    0.45

    24

    Other woodland

    0.40

    Grassland

    31

    High coverage grassland

    0.75

    32

    Moderate coverage grassland

    0.45

    33

    Low coverage grassland

    0.20

    Waters

    41

    Canal

    0.55

    42

    Lake

    0.75

    43

    Reservoir pit pond

    0.55

    44

    Permanent glacier snowfield

    0.90

    46

    Bottomland

    0.55

    Residential land and industrial and mining land

    51

    Urban land

    0.20

    52

    Rural residential land

    0.20

    53

    Other construction land

    0.15

    Unused land

    61

    Sandy land

    0.01

    62

    Gobi

    0.01

    63

    Salt-affected land

    0.05

    64

    Marshland

    0.65

    65

    Bare land

    0.05

    66

    Bare rock texture

    0.01

    67

    Other unused land

    0.08

  • Table 2   Effects of different land use changes on the ecological value of the urban agglomeration on the northern slope of the Tianshan Mountains from 1980 to 2015

    Land use type

    Contribution rate of land use changeto ecological value (%)

    Land use type

    Contribution rate of land use changeto ecological value (%)

    Low-coverage grassland

    34.54

    Other construction land

    1.49

    Dry land

    24.76

    Permanent glacier snowfield

    1.28

    Moderate-coverage grassland

    7.44

    Bottomland

    1.28

    Gobi

    4.78

    Salt-affected land

    1.17

    Urban land

    3.29

    Lake

    0.96

    High-coverage grassland

    2.98

    Bare land

    0.85

    Shrubbery

    2.55

    Other woodland

    0.64

    Marshland

    2.55

    Bare rock texture

    0.64

    Sparse woodland

    2.34

    Paddy field

    0.32

    Rural residential land

    2.02

    Sandy land

    0.10

    Reservoir pit pond

    1.91

    Canal

    0.10

    Woodland

    1.91

    Other unused land

    0.10

  • Table 3   Changes in ecological value caused by the expansion of construction land in the urban agglomeration on the northern slope of the Tianshan Mountains and in each city/county/district in 1980–2000 and 2000–2015

    Area name

    1980–2000

    2000–2015

    Area name

    1980–2000

    2000–2015

    Urumqi City

    –16.42

    –0.81

    Qitai County

    –17.18

    –1.67

    Changji City

    –18.1

    –26.7

    Shawan County

    –22.7

    –28.55

    Fukang City

    –15.28

    9.03

    Mori Kazak Autonomous County

    –16.75

    7.28

    Gaochang District

    –15.51

    20.48

    Shanshan County

    2.7

    24.04

    Hutubi County

    –18.1

    –13

    Shihezi City

    –15.25

    –12.3

    Jimsar County

    –13.28

    11.99

    Toksun County

    –6.52

    12.24

    Karamay City

    –5.35

    19.83

    Usu City

    –25.25

    –27.2

    Kuytun City

    –12.3

    –25.85

    Wujiaqu City

    –12.3

    –14.65

    Manas County

    –23.16

    –19.65

    Urban agglomeration on the northern slope of the Tianshan Mountains

    –250.75

    –65.49

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