近20 a新疆南部植被覆盖度时空特征及对气候因素的响应——以塔什库尔干塔吉克自治县为例

doi:10.12118/j.issn.1000-6060.2021.606

Abstract

Abstract:

Fractional vegetation coverage (FVC) is an evaluation index that reflects the quality of the ecological environment. Understanding changes in fractional vegetation coverage is a critical part of developing a more ecological civilization, as well as regional agriculture, animal husbandry planning, and environmental protection. Based on the normalized difference vegetation index from 2001 to 2020, and taking into consideration the types of vegetation on cultivated land, forested land, and grassland, the mixed pixel dichotomy model is used to calculate fractional vegetation coverage. The spatial and temporal characteristics of fractional vegetation coverage in Taxkorgan Tajik Autonomous County of Xinjiang, China are analyzed using methods of spatial stability analysis, Sen+Mann-Kendall spatial trend analysis and linear regression. At the same time, combined with temperature and precipitation data, the impact of climate factors on FVC is analyzed using Spearman correlation analysis and GIS spatial analysis. The results showed that (1) over the past 20 years, fractional vegetation coverage was concentrated in the middle fractional vegetation coverage area, and fractional vegetation coverage decreased by 4.79%. (2) The spatial stability of fractional vegetation coverage fluctuated slightly, with fluctuations (37.3%) and moderate fluctuations (32.7%); The fractional vegetation coverage decreased both significantly and not significantly, with decreases of 3.8% and 54.5% of the total area, respectively. (3) The vegetation status of cultivated land, forested land, and grassland showed slight, varying degrees of degradation. Fractional vegetation coverage decreased by 4.57%, 6.32%, and 4.24% respectively. In terms of spatial stability values, which were 51.28%, 54.48%, and 52.29%, respectively, there was no significant reduction. (4) From 2001 to 2020, degrees of spatial stability and degradation on cultivated land were slower and more stable than on forested land and grassland, and forested land saw more significant degradation than cultivated land and grassland. Changes in fractional vegetation coverage observed in the study area were small and showed a slight downward trend. Human activity was the main contributing factor affecting vegetation growth.

Key words: dimidiate pixel model, fractional vegetation coverage (FVC), Sen+Mann-Kendall, spatial stability, climate factors

LIU Yuting,ZHANG Qifei,LIU Jingshi,GUAN Hanxiao,MENG Fanxue. Temporal and spatial characteristics of fractional vegetation coverage and its response to climatic factors in southern Xinjiang in recent 20 years: A case of Taxkorgan Tajik Autonomous County[J].Arid Land Geography, 2022, 45(5): 1481-1489.

Figures/Tables 6

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Tab. 1

Fig. 5

References 28

[1]	赵茂盛, 符淙斌, 延晓冬, 等. 应用遥感数据研究中国植被生态系统与气候的关系[J]. 地理学报, 2001, 56(3): 287-296. doi: 10.11821/xb200103005
	[Zhao Maosheng, Fu Congbin, Yan Xiaodong, et al. Study on the relationship between different ecosystems and climate in China using NOAA /AVHRR data[J]. Acta Geographica Sinica, 2001, 56(3): 287-296. ] doi: 10.11821/xb200103005
[2]	汪明冲, 王兮之, 梁钊雄, 等. 喀斯特与非喀斯特区域植被覆盖变化景观分析——以广西壮族自治区河池市为例[J]. 生态学报, 2014, 34(12): 3435-3443.
	[Wang Mingchong, Wang Xizhi, Liang Zhaoxiong, et al. Landscape pattern analysis on change of fractional vegetation cover between karst and no-karst areas: A case study in Hechi District, Guangxi Zhuang Autonomous Region[J]. Acta Ecologica Sinica, 2014, 34(12): 3435-3443. ]
[3]	Liu H, Li X J, Mao F J, et al. Spatiotemporal evolution of fractional vegetation cover and its response to climate change based on MODIS data in the subtropical region of China[J]. Remote Sensing, 2021, 13(5): 913, doi: 10.3390/rs13050913. doi: 10.3390/rs13050913
[4]	高鹏文, 阿里木江·卡斯木, 赵永玉, 等. 1988—2018年哈密绿洲植被覆盖度时空变化及其驱动力[J]. 水土保持通报, 2020, 40(6): 273-280.
	[Gao Pengwen, Kasim Alimuijiang, Zhao Yongyu, et al. Spatial and temporal changes and driving forces of vegetation coverage in Hami Oasis during 1988—2018[J]. Bulletin of Soil and Water Conservation, 2020, 40(6): 273-280. ]
[5]	白慧敏, 龚志强, 孙桂全, 等. 气象要素对华北地区夏季植被覆盖度的影响[J]. 大气科学, 2022, 46(1): 27-39.
	[Bai Huimin, Gong Zhiqiang, Sun Guiquan, et al. Influence of meteorological elements on summer vegetation coverage in north China[J]. Chinese Journal of Atmospheric Sciences, 2022, 46(1): 27-39. ]
[6]	李玉朋, 陈亚宁, 叶朝霞, 等. 塔里木河下游输水20 a的生态响应[J]. 干旱区地理, 2021, 44(3): 700-707.
	[Li Yupeng, Chen Yaning, Ye Zhaoxia, et al. Ecological responses of ecological water conveyance in the lower reaches of Tarim River for 20 years[J]. Arid Land Geography, 2021, 44(3): 700-707. ]
[7]	Sun F, Wang Y, Chen Y N, et al. Historic and simulated desert-oasis ecotone changes in the arid Tarim River Basin, China[J]. Remote Sensing, 2021, 13(4): 647, doi: 10.3390/rs13040647. doi: 10.3390/rs13040647
[8]	刘明霞, 刘友存, 陈明, 等. 2000—2018年赣江上游植被覆盖度时空演化及其对气候变化的响应[J]. 水土保持通报, 2020, 40(5): 284-290.
	[Liu Mingxia, Liu Youcun, Chen Ming, et al. Spatiotemporal evolution of vegetation coverage and its response to climate change in upper reaches of Ganjiang River Basin during 2000—2018[J]. Bulletin of Soil and Water Conservation, 2020, 40(5): 284-290. ]
[9]	庞家泰, 段金亮, 张瑞, 等. 2000—2019年渭河流域植被覆盖度时空演变特征及气候响应[J]. 水土保持研究, 2021, 28(5): 230-237.
	[Pang Jiatai, Duan Jinliang, Zhang Rui, et al. Characteristics of spatiotemporal evolution and climate response of vegetation cover in the Wei River Basin from 2000 to 2019[J]. Research of Soil and Water Conservation, 2021, 28(5): 230-237. ]
[10]	Jiapaer G, Chen X, Bao A M. A comparison of methods for estimating fractional vegetation cover in arid regions[J]. Agricultural and Forest Meteorology, 2011, 151(12): 1698-1710. doi: 10.1016/j.agrformet.2011.07.004
[11]	Zhang J R, Zhang Z T, Chen J Y, et al. Estimating soil salinity with different fractional vegetation cover using remote sensing[J]. Land Degradation & Development, 2021, 32(2): 597-612. doi: 10.1002/ldr.3737
[12]	曹永香, 毛东雷, 薛杰, 等. 绿洲-沙漠过渡带植被覆盖动态变化及其驱动因素——以新疆策勒为例[J]. 干旱区研究, 2022, 39(2): 1-13.
	[Cao Yongxiang, Mao Donglei, Xue Jie, et al. Dynamic changes and driving factors of vegetation cover in the oasis-desert ecotone: A case study of Cele, Xinjiang[J]. Arid Zone Research, 2022, 39(2): 1-13. ]
[13]	Liu Y, Li L H, Chen X, et al. Temporal-spatial variations and influencing factors of vegetation cover in Xinjiang from 1982 to 2013 based on GIMMS-NDVI_3g[J]. Global and Planetary Change, 2018, 169: 145-155. doi: 10.1016/j.gloplacha.2018.06.005
[14]	庞冉, 王文. 基于MODIS数据的吐鲁番盆地2001—2017年植被变化及水热组合影响分析[J]. 干旱区地理, 2020, 43(5): 1242-1252.
	[Pang Ran, Wang Wen. Analysis of vegetation index changes and the influence of hydrothermal combination in the Turpan Basin from 2001 to 2017 based on MODIS data[J]. Arid Land Geography, 2020, 43(5): 1242-1252. ]
[15]	《塔什库尔干塔吉克自治县概况》编写组. 塔什库尔干塔吉克自治县概况[M]. 北京: 民族出版社, 2009.
	[General situation of Taxkorgan Tajik Autonomous County of prepared by the compilation team. General situation of Taxkorgan Tajik Autonomous County[M]. Beijing: The Ethnic Publishing House, 2009. ]
[16]	董璐, 赵杰, 刘雪佳, 等. 1982—2015年新疆地区植被生长对气温的响应[J]. 应用生态学报, 2019, 30(7): 2165-2170. doi: 10.13287/j.1001-9332.201907.023
	[Dong Lu, Zhao Jie, Liu Xuejia, et al. Responses of vegetation growth to temperature during 1982—2015 in Xinjiang, China[J]. Chinese Journal of Applied Ecology, 2019, 30(7): 2165-2170. ] doi: 10.13287/j.1001-9332.201907.023
[17]	孙天瑶, 李雪梅, 许民, 等. 2000—2018年塔里木河流域植被覆盖时空格局[J]. 干旱区地理, 2020, 43(2): 415-424.
	[Sun Tianyao, Li Xuemei, Xu Min, et al. Spatial-temporal variations of vegetation coverage in the Tarim River Basin from 2000 to 2018[J]. Arid Land Geography, 2020, 43(2): 415-424. ]
[18]	马晓妮, 任宗萍, 谢梦瑶, 等. 基于地理探测器的砒砂岩区植被覆盖度环境驱动因子量化分析[J]. 生态学报, 2022, 42(8): 3389-3399.
	[Ma Xiaoni, Ren Zongping, Xie Mengyao, et al. Quantitative analysis of environmental driving factors of vegetation coverage in the Pisha sandstone area based on geodetector[J]. Acta Ecologica Sinica, 2022, 42(8): 3389-3399. ]
[19]	阿多, 赵文吉, 宫兆宁, 等. 1981—2013华北平原气候时空变化及其对植被覆盖度的影响[J]. 生态学报, 2017, 37(2): 576-592.
	[A Duo, Zhao Wenji, Gong Zhaoning, et al. Temporal analysis of climate change and its relationship with vegetation cover on the north China plain from 1981 to 2013[J]. Acta Ecologica Sinica, 2017, 37(2): 576-592. ]
[20]	崔利芳, 王伦澈, 屈赛, 等. 气温、降水量和人类活动对长江流域植被NDVI的影响[J]. 地球科学, 2020, 45(6): 1905-1917.
	[Cui Lifang, Wang Lunche, Qu Sai, et al. Impacts of temperature, precipitation and human activity on vegetation NDVI in Yangtze River Basin, China[J]. Earth Science, 2020, 45(6): 1905-1917. ]
[21]	孙帆, 王弋, 陈亚宁. 塔里木盆地荒漠-绿洲过渡带动态变化及其影响因素[J]. 生态学杂志, 2020, 39(10): 3397-3407.
	[Sun Fan, Wang Yi, Chen Yaning. Dynamic changes of the desert-oasis ecotone and its influencing factors in Tarim Basin[J]. Chinese Journal of Ecology, 2020, 39(10): 3397-3407. ]
[22]	李梓钰, 陈启慧, 黄峰, 等. 吐鲁番盆地骆驼刺保护区植被覆盖度时空演变[J]. 干旱区研究, 2021, 38(4): 1104-1110.
	[Li Ziyu, Chen Qihui, Huang Feng, et al. Spatiotemporal evolution of vegetation coverage in Alhagi sparsifolia reserve in Turpan Basin, Xinjiang[J]. Arid Zone Research, 2021, 38(4): 1104-1110. ]
[23]	陈亚宁, 李稚, 范煜婷, 等. 西北干旱区气候变化对水文水资源影响研究进展[J]. 地理学报, 2014, 69(9): 1295-1304. doi: 10.11821/dlxb201409005
	[Chen Yaning, Li Zhi, Fan Yuting, et al. Research progress on the impact of climate change on water resources in the arid region of northwest China[J]. Acta Geographica Sinica, 2014, 69(9): 1295-1304. ] doi: 10.11821/dlxb201409005
[24]	魏彦强, 芦海燕, 王金牛, 等. 近35年青藏高原植被带变化对气候变化及人类活动的响应[J]. 草业科学, 2019, 36(4): 1163-1176.
	[Wei Yanqiang, Lu Haiyan, Wang Jinniu, et al. Responses of vegetation zones, in the Qinghai-Tibetan Plateau, to climate change and anthropogenic influences over the last 35 years[J]. Pratacultural Science, 2019, 36(4): 1163-1176. ]
[25]	孙笑冰. 新疆塔什库尔干塔吉克自治县牧区经济发展的调查与思考[J]. 实事求是, 2015(4): 101-104.
	[Sun Xiaobing. Investigation and reflection on the economic development of pastoral areas in Tajik Autonomous County of Taxkorgan, Xinjiang[J]. Seek Truth From Facts, 2015(4): 101-104. ]
[26]	张青青, 徐海量, 樊自立. 玛纳斯河流域人工绿洲扩张对社会经济和生态环境的影响分析[J]. 中国沙漠, 2012, 32(3): 863-871.
	[Zhang Qingqing, Xu Hailiang, Fan Zili. Effect of artificial oasis expansion on social economy and ecological environment in Manas River Basin, Xinjiang of China[J]. Journal of Desert Research, 2012, 32(3): 863-871. ]
[27]	刘洋洋, 任涵玉, 章钊颖, 等. 中国草地覆盖度时空动态格局及其影响因素[J]. 水土保持研究, 2022, 29(2): 221-230.
	[Liu Yangyang, Ren Hanyu, Zhang Zhaoying, et al. Temporal and spatial dynamic pattern of grassland coverage and its influencing factors in China[J]. Research of Soil and Water Conservation, 2022, 29(2): 221-230. ]
[28]	Fujii H, Koike T, Imaoka K. Improvement of the AMSR-E algorithm for soil moisture estimation by introducing a fractional vegetation coverage dataset derived from MODIS data[J]. Journal of the Remote Sensing Society of Japan, 2009, 29(1): 282-292.

植被类型	植被面积/km²		植被覆盖度/%		C_vFVC/%					植被覆盖度变化趋势/%
植被类型	2001年	2020年	2001年	2020年	C_vFVC≥0.20	0.15≤C_vFVC <0.20	0.10≤C_vFVC <0.15	0.05≤C_vFVC <0.10	C_vFVC<0.05	显著减少	不显著减少	不显著增加	显著增加
耕地	4.95	80.15	28.24	26.95	3.85	7.69	11.54	34.62	42.31	0.00	51.28	48.72	0.00
林地	33.00	32.31	28.80	26.98	3.92	7.28	17.16	45.71	25.93	2.61	54.48	40.11	2.80
草地	8695.01	9685.11	28.77	27.55	3.91	9.47	24.91	42.27	16.45	2.91	52.29	41.79	3.01

Temporal and spatial characteristics of fractional vegetation coverage and its response to climatic factors in southern Xinjiang in recent 20 years: A case of Taxkorgan Tajik Autonomous County

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 6

References 28

Related Articles 1

Metrics

Comments

Recommended 0