新疆农业科学 ›› 2024, Vol. 61 ›› Issue (1): 230-240.DOI: 10.6048/j.issn.1001-4330.2024.01.025
刘亮1(), 彭建2, 李刚勇2, 韩万强1, 刘玉佳1, 关靖云1, 刘程才3, 郑江华1,4()
收稿日期:
2023-05-05
出版日期:
2024-01-20
发布日期:
2024-02-21
通信作者:
郑江华(1973-),男,浙江江山人,教授,博士,硕士生/博士生导师,研究方向为地理信息系统与遥感技术应用,(E-mail)作者简介:
刘亮(1996-),男,新疆昌吉人,硕士研究生,研究方向为植被与环境遥感,(E-mail)liuliang19960423@163.com
基金资助:
LIU Liang1(), PENG Jian2, LI Gangyong2, HAN Wanqiang1, LIU Yujia1, GUAN Jingyun1, LIU Chengcai3, ZHENG Jianghua1,4()
Received:
2023-05-05
Online:
2024-01-20
Published:
2024-02-21
Correspondence author:
ZHENG Jianghua(1973-),man,born in Jiangshan,Zhejiang Province,professor,research interest is geographic information system and remote sensing technology application,(E-mail) Supported by:
摘要:
【目的】监测新疆库鲁斯台草原近12年动态变化状况,为生态系统可持续发展和管理提供理论支撑。【方法】利用新疆库鲁斯台草原2010~2021年Landsat影像,计算7种植被指数,基于野外实测草地高度、盖度及生物量数据构建草地退化指数(Grassland degradation index,GDI),建立基于最优植被指数和GDI的库鲁斯台草原草地退化反演模型;并对库鲁斯台草原草地退化状况进行分等定级,从草地退化等级、变化方向及变化强度综合分析库鲁斯台草原动态变化。【结果】(1)地上生物量、覆盖度及高度3个指标在草地退化监测中的权重由大到小为覆盖度(37.6%)>地上生物量(34.3%)>高度(28.1%)。(2)7种植被指数中NDVI与GDI相关性最高,R2为0.854,基于NDVI的草地退化监测模型为GDI=0.860×NDVI+0.038。(3)2010~2021年库鲁斯台草原重度退化面积有所减少,变化方向主要以退化恢复型和未变化型为主,退化增强型面积为减少趋势,变化强度主要为无变化强度及慢速变化强度。【结论】近12年新疆库鲁斯台草原退化过程减弱。
中图分类号:
刘亮, 彭建, 李刚勇, 韩万强, 刘玉佳, 关靖云, 刘程才, 郑江华. 2010~2021年新疆库鲁斯台草原动态遥感监测变化分析[J]. 新疆农业科学, 2024, 61(1): 230-240.
LIU Liang, PENG Jian, LI Gangyong, HAN Wanqiang, LIU Yujia, GUAN Jingyun, LIU Chengcai, ZHENG Jianghua. Analysis of dynamic remote sensing monitoring changes in Kulusitai grassland in Xinjiang from 2010 to 2021[J]. Xinjiang Agricultural Sciences, 2024, 61(1): 230-240.
指标 Index | 综合得分模型系数 Comprehensive score model coefficient | 指标权重 Index weight |
---|---|---|
高度Height | 0.335 | 0.281 |
生物量Biomass | 0.408 | 0.343 |
覆盖度Coverage | 0.447 | 0.376 |
表1 指标权重
Tab.1 Index weight
指标 Index | 综合得分模型系数 Comprehensive score model coefficient | 指标权重 Index weight |
---|---|---|
高度Height | 0.335 | 0.281 |
生物量Biomass | 0.408 | 0.343 |
覆盖度Coverage | 0.447 | 0.376 |
方程 Equation | 模型摘要 Model summary | 参数估算值 Parameter estimation | |||||||
---|---|---|---|---|---|---|---|---|---|
R2 | F | df1 | df2 | 显著性 Significance | 常量 Constant | b1 | b2 | b3 | |
线性Linear | 0.854 1 | 146.315 | 1 | 25 | 0.000 | 0.038 | 0.860 | ||
对数Logarithm | 0.633 0 | 43.126 | 1 | 25 | 0.000 | 0.433 | 0.113 | ||
逆Contrary | 0.297 0 | 10.553 | 1 | 25 | 0.003 | 0.285 | -0.004 | ||
二次Secondary | 0.854 0 | 70.319 | 2 | 24 | 0.000 | 0.043 | 0.821 | 0.073 | |
三次Three times | 0.854 0 | 45.000 | 3 | 23 | 0.000 | 0.039 | 0.911 | -0.363 | 0.565 |
复合Composite | 0.665 0 | 49.573 | 1 | 25 | 0.000 | 0.074 | 76.540 | ||
幂Cloth cover | 0.853 0 | 157.420 | 1 | 25 | 0.000 | 0.727 | 0.755 | ||
S | 0.755 0 | 76.991 | 1 | 25 | 0.000 | -1.230 | -0.033 | ||
增长Increase | 0.665 0 | 49.573 | 1 | 25 | 0.000 | -2.599 | 4.338 | ||
指数Index | 0.665 0 | 49.573 | 1 | 25 | 0.000 | 0.074 | 4.338 | ||
Logistic | 0.665 0 | 49.573 | 1 | 25 | 0.000 | 13.446 | 0.013 |
表2 NDVI与GDI的多种拟合模型统计及参数评估
Tab.2 Statistics and parameter evaluation of various fitting models of NDVI and GDI
方程 Equation | 模型摘要 Model summary | 参数估算值 Parameter estimation | |||||||
---|---|---|---|---|---|---|---|---|---|
R2 | F | df1 | df2 | 显著性 Significance | 常量 Constant | b1 | b2 | b3 | |
线性Linear | 0.854 1 | 146.315 | 1 | 25 | 0.000 | 0.038 | 0.860 | ||
对数Logarithm | 0.633 0 | 43.126 | 1 | 25 | 0.000 | 0.433 | 0.113 | ||
逆Contrary | 0.297 0 | 10.553 | 1 | 25 | 0.003 | 0.285 | -0.004 | ||
二次Secondary | 0.854 0 | 70.319 | 2 | 24 | 0.000 | 0.043 | 0.821 | 0.073 | |
三次Three times | 0.854 0 | 45.000 | 3 | 23 | 0.000 | 0.039 | 0.911 | -0.363 | 0.565 |
复合Composite | 0.665 0 | 49.573 | 1 | 25 | 0.000 | 0.074 | 76.540 | ||
幂Cloth cover | 0.853 0 | 157.420 | 1 | 25 | 0.000 | 0.727 | 0.755 | ||
S | 0.755 0 | 76.991 | 1 | 25 | 0.000 | -1.230 | -0.033 | ||
增长Increase | 0.665 0 | 49.573 | 1 | 25 | 0.000 | -2.599 | 4.338 | ||
指数Index | 0.665 0 | 49.573 | 1 | 25 | 0.000 | 0.074 | 4.338 | ||
Logistic | 0.665 0 | 49.573 | 1 | 25 | 0.000 | 13.446 | 0.013 |
等级 Grade | 程度 Degree | GDI Grassland degradation index | NDVI Normalized difference vegetation index |
---|---|---|---|
1 | 无明显退化 | GDI>0.404 | NDVI>0.425 |
2 | 轻度退化 | 0.404>GDI>0.254 | 0.425>NDVI>0.251 |
3 | 中度退化 | 0.254>GDI>0.201 | 0.251>NDVI>0.189 |
4 | 重度退化 | GDI<0.201 | NDVI<0.189 |
表3 库鲁斯台草原植被退化分级标准
Tab.3 Classification standard of vegetation degradation in Kulusitai grassland
等级 Grade | 程度 Degree | GDI Grassland degradation index | NDVI Normalized difference vegetation index |
---|---|---|---|
1 | 无明显退化 | GDI>0.404 | NDVI>0.425 |
2 | 轻度退化 | 0.404>GDI>0.254 | 0.425>NDVI>0.251 |
3 | 中度退化 | 0.254>GDI>0.201 | 0.251>NDVI>0.189 |
4 | 重度退化 | GDI<0.201 | NDVI<0.189 |
图3 2010~2021年库鲁斯台草原退化等级 注:该图基于自然资源部标准地图服务网站下载的审图号为GS(2019)1698号的标准地图制作,底图无修改,下同
Fig.3 Degradation level of Kulusitai grassland from 2010 to 2021 Note:This diagram is based on the Ministry of Natural Resources the standard Map production with the review number GS(2019)1968号 downloaded from the map service website,no modi-fications made to the base map,the asme as beolw
年份 Year | 无明显 退化面积 No obvious degradation area (km2) | 轻度退 化面积 Slightly degraded area (km2) | 中度退 化面积 Moderately degraded area (km2) | 重度退 化面积 Severely degraded area (km2) |
---|---|---|---|---|
2010 | 209.756 9 | 631.38 | 968.87 | 35.89 |
2011 | 60.76 | 701.82 | 940.79 | 20.49 |
2012 | 1.4 | 657.85 | 1 032.49 | 5 |
2013 | 231.35 | 674.01 | 825.53 | 89.19 |
2014 | 75.01 | 700.86 | 818.21 | 57.98 |
2015 | 173.61 | 806.78 | 590.39 | 104.02 |
2016 | 410.97 | 496.91 | 473.62 | 123.94 |
2017 | 391.39 | 588.07 | 645.1 | 167.73 |
2018 | 301.73 | 610.33 | 690.78 | 134.75 |
2019 | 357.26 | 654.14 | 738.87 | 125.16 |
2020 | 271.68 | 767.75 | 689.66 | 63.86 |
2021 | 481.51 | 599.58 | 590.49 | 22.46 |
表4 库鲁斯台草原植被退化分级标准
Tab.4 Classification standard of vegetation degradation in Kulusitai grassland
年份 Year | 无明显 退化面积 No obvious degradation area (km2) | 轻度退 化面积 Slightly degraded area (km2) | 中度退 化面积 Moderately degraded area (km2) | 重度退 化面积 Severely degraded area (km2) |
---|---|---|---|---|
2010 | 209.756 9 | 631.38 | 968.87 | 35.89 |
2011 | 60.76 | 701.82 | 940.79 | 20.49 |
2012 | 1.4 | 657.85 | 1 032.49 | 5 |
2013 | 231.35 | 674.01 | 825.53 | 89.19 |
2014 | 75.01 | 700.86 | 818.21 | 57.98 |
2015 | 173.61 | 806.78 | 590.39 | 104.02 |
2016 | 410.97 | 496.91 | 473.62 | 123.94 |
2017 | 391.39 | 588.07 | 645.1 | 167.73 |
2018 | 301.73 | 610.33 | 690.78 | 134.75 |
2019 | 357.26 | 654.14 | 738.87 | 125.16 |
2020 | 271.68 | 767.75 | 689.66 | 63.86 |
2021 | 481.51 | 599.58 | 590.49 | 22.46 |
变化趋势 Change trend | 退化等级 Degradation level |
---|---|
退化增强型 Degenerate enhanced type | 1→2、1→3、1→4、2→3、2→4、3→4 |
退化恢复型 Degenerative recovery type | 4→3、4→2、4→1、3→2、3→1、2→1 |
未变化型 Unchanged type | 1→1、2→2、3→3、4→4 |
表5 库鲁斯台草原变化分级标准
Tab.5 Classification standard of change in Kulusitai grassland
变化趋势 Change trend | 退化等级 Degradation level |
---|---|
退化增强型 Degenerate enhanced type | 1→2、1→3、1→4、2→3、2→4、3→4 |
退化恢复型 Degenerative recovery type | 4→3、4→2、4→1、3→2、3→1、2→1 |
未变化型 Unchanged type | 1→1、2→2、3→3、4→4 |
年份 Year | 退化恢复型 Degenerate restorative (km2) | 退化增强型 Degenerate enhanced (km2) | 未变化型 Unchanged type (km2) |
---|---|---|---|
2010~2011 | 181.63 | 316.23 | 1 078.28 |
2011~2012 | 133.38 | 242.80 | 1 169.80 |
2012~2013 | 511.33 | 117.35 | 905.21 |
2013~2014 | 193.74 | 206.63 | 1 073.96 |
2014~2015 | 761.14 | 90.33 | 554.21 |
2015~2016 | 377.53 | 151.34 | 765.39 |
2016~2017 | 218.55 | 285.62 | 767.75 |
2017~2018 | 301.75 | 290.19 | 965.55 |
2018~2019 | 220.03 | 265.48 | 1 084.23 |
2019~2020 | 241.70 | 230.29 | 1 157.90 |
2020~2021 | 387.08 | 146.96 | 1 042.54 |
2010~2021 | 668.45 | 199.67 | 642.97 |
表6 2010~2021年库鲁斯台草原变化趋势面积变化
Tab.6 Area statistics of change trend in Kulusitai grassland from 2010 to 2021
年份 Year | 退化恢复型 Degenerate restorative (km2) | 退化增强型 Degenerate enhanced (km2) | 未变化型 Unchanged type (km2) |
---|---|---|---|
2010~2011 | 181.63 | 316.23 | 1 078.28 |
2011~2012 | 133.38 | 242.80 | 1 169.80 |
2012~2013 | 511.33 | 117.35 | 905.21 |
2013~2014 | 193.74 | 206.63 | 1 073.96 |
2014~2015 | 761.14 | 90.33 | 554.21 |
2015~2016 | 377.53 | 151.34 | 765.39 |
2016~2017 | 218.55 | 285.62 | 767.75 |
2017~2018 | 301.75 | 290.19 | 965.55 |
2018~2019 | 220.03 | 265.48 | 1 084.23 |
2019~2020 | 241.70 | 230.29 | 1 157.90 |
2020~2021 | 387.08 | 146.96 | 1 042.54 |
2010~2021 | 668.45 | 199.67 | 642.97 |
年份 Year | 无变化 Unchanged (km2) | 慢速 Slow (km2) | 中速 Medium (km2) | 快速 Fast (km2) |
---|---|---|---|---|
2010~2011 | 1 078.28 | 458.13 | 39.61 | 0.12 |
2011~2012 | 1 169.80 | 371.65 | 4.53 | 0.10 |
2012~2013 | 905.21 | 600.31 | 28.33 | 0.04 |
2013~2014 | 1 073.96 | 393.13 | 7.06 | 0.16 |
2014~2015 | 554.21 | 847.69 | 3.75 | 0.03 |
2015~2016 | 765.39 | 512.90 | 15.76 | 0.21 |
2016~2017 | 767.75 | 465.66 | 38.22 | 0.29 |
2017~2018 | 965.55 | 546.14 | 45.22 | 0.58 |
2018~2019 | 1 084.23 | 470.36 | 15.01 | 0.13 |
2019~2020 | 1 157.90 | 461.66 | 10.28 | 0.05 |
2020~2021 | 1 042.54 | 520.42 | 13.55 | 0.06 |
2010~2021 | 642.97 | 727.10 | 139.92 | 1.09 |
表7 2010~2021年库鲁斯台草原变化强度面积变化
Tab.7 Area statistics of change intensity in Kulusitai grassland from 2010 to 2021
年份 Year | 无变化 Unchanged (km2) | 慢速 Slow (km2) | 中速 Medium (km2) | 快速 Fast (km2) |
---|---|---|---|---|
2010~2011 | 1 078.28 | 458.13 | 39.61 | 0.12 |
2011~2012 | 1 169.80 | 371.65 | 4.53 | 0.10 |
2012~2013 | 905.21 | 600.31 | 28.33 | 0.04 |
2013~2014 | 1 073.96 | 393.13 | 7.06 | 0.16 |
2014~2015 | 554.21 | 847.69 | 3.75 | 0.03 |
2015~2016 | 765.39 | 512.90 | 15.76 | 0.21 |
2016~2017 | 767.75 | 465.66 | 38.22 | 0.29 |
2017~2018 | 965.55 | 546.14 | 45.22 | 0.58 |
2018~2019 | 1 084.23 | 470.36 | 15.01 | 0.13 |
2019~2020 | 1 157.90 | 461.66 | 10.28 | 0.05 |
2020~2021 | 1 042.54 | 520.42 | 13.55 | 0.06 |
2010~2021 | 642.97 | 727.10 | 139.92 | 1.09 |
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