近16年白龙江流域植被NDVI对气候变化的响应

靳立亚; 任骊安; 冯瑞娟

doi:10.12335/2096-8981.2022072803

近16年白龙江流域植被NDVI对气候变化的响应

doi: 10.12335/2096-8981.2022072803

靳立亚^{1, 2, ,},
任骊安^{1, 3},
冯瑞娟³

1.
成都信息工程大学，成都 610225
2.
兰州大学，兰州 730000
3.
甘肃省陇南气象局，甘肃陇南 746000

基金项目: 科技部科技基础资源调查专项课题（2017FY00903）

详细信息

通讯作者:
E-mail：jinly@lzu.edu.cn

中图分类号: K90
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出版历程
- 收稿日期: 2022-07-28
- 修回日期: 2022-08-22
- 录用日期: 2022-08-28
- 网络出版日期: 2022-12-16
- 刊出日期: 2023-05-25

Response of Vegetation NDVI in Bailongjiang Basin to Climatic Changes During the Past Sixteen Years

JIN Liya^{1, 2
, ,},
REN Li’an^{1, 3},
FENG Ruijuan³

1.
Chengdu University of Information Technology, Chengdu 610225, China
2.
Lanzhou University, Lanzhou 730000, China
3.
Longnan Meteorological Bureau, Longnan 746000, Gansu, China

摘要

摘要: 白龙江流域的植被与近16年来气温、降水的变化存在着密切关系。其中在流域中下游区域（宕昌、舟曲、武都、文县）植被与降水呈显著正相关。不同季节气温和降水对植被的影响存在着明显差异，春季气温与植被的关系以正相关为主，其中显著正相关的像元占比为26.07%，主要位于流域中上游；夏季降水与生态植被的关系以正相关为主，其中显著正相关的像元占比为11.21%，主要位于流域中下游区域；秋季气温和降水与植被的关系类似，即在流域西部为负相关、流域东部为正相关，其中显著负相关的像元占比分别为7.13%（气温）和40.74%（降水）。生长季贯穿春季到初秋的时段，气温和降水与植被的关系呈显著正相关的像元占比分别为22.08%和28.65%。
- 植被 /
- 气候变化 /
- 响应 /
- 白龙江流域
Abstract: There was a closely relationship between ecological vegetation and changes in temperature and precipitation during the past sixteen years in the Bailongjiang basin. There has been a significantly positive relationship between the vegetation index (NDVI) and the precipitation within the middle and down reaches of the Bailongjiang basin (Tanchang, Zhouqu, Wudu, Wenxian). The influence of temperature and precipitation in different seasons on vegetation showed significantly diverse. In spring, the relationship between temperature and vegetation was mainly positive, among which the significant positive correlation pixel proportion is 26.07%, mainly located in the middle and upper reaches of the watershed. In summer, there was a positive relationship between precipitation and NDVI, with significant pixels of more than 11.21%, located in the middle and lower reaches of the Bailongjiang basin. In autumn, the relationship between temperature and vegetation was similar to precipitation, which was negatively correlated in the west and positively correlated in the east, of which the significant negative correlation pixel proportion was 7.13% (temperature) and 40.74% (precipitation), respectively. During the growing season (from spring to early autumn), there has been a positive relationship between temperature and NDVI as well as precipitation and NDVI, with significant pixels more than 22.08% (temperature) and 28.65% (precipitation), respectively.
- vegetation /
- climatic change /
- response /
- Bailongjiang basin

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图 1 白龙江流域主要气象站点空间分布

Figure 1. Spatial distribution of main meteorological stations in Bailongjiang basin

下载: 全尺寸图片幻灯片

图 2 2000—2015年白龙江流域NDVI年际变化

Figure 2. Interannual variations of NDVI in Bailongjiang basin from 2000 to 2015

下载: 全尺寸图片幻灯片

图 3 NDVI季节变化

Figure 3. Seasonal variations of NDVI

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图 4 2000—2015年白龙江流域NDVI空间分布

Figure 4. Spatial pattern of annual NDVI (2000-2015) in Bailongjiang basin

下载: 全尺寸图片幻灯片

图 5 白龙江流域各密度植被覆盖像元

Figure 5. Vegetation coverage pixels of various densities in Bailongjiang basin

下载: 全尺寸图片幻灯片

图 6 2000—2015年白龙江流域不同季节NDVI均值空间分布

Figure 6. Spatial pattern of annual mean NDVI in different seasons from 2000 to 2015 in Bailongjiang basin

下载: 全尺寸图片幻灯片

图 7 白龙江流域各季节不同密度植被覆盖像元

Figure 7. Vegetation coverage pixels against different densities in Bailongjiang basin in different seasons

下载: 全尺寸图片幻灯片

图 8 白龙江流域植被覆盖年均变化趋势空间分布

注：图(a)中P<0.05；图(b)中P<0.01。

Figure 8. Spatial pattern of annually trends of NDVI in Bailongjiang basin

下载: 全尺寸图片幻灯片

图 9 白龙江流域不同季节植被覆盖年际变化趋势空间分布

Figure 9. Spatial pattern of annually trends of seasonal NDVI in Bailongjiang basin

下载: 全尺寸图片幻灯片

图 10 白龙江流域植被NDVI与气温、降水相关关系空间分布

注：(a)为NDVI与气温的相关关系；(b)为NDVI与降水的相关关系；P<0.05。

Figure 10. Spatial pattern of correlation between annual mean NDVI and air temperature (a) as well as precipitation (b) in Bailongjiang basin (P<0.05)

下载: 全尺寸图片幻灯片

表 3 白龙江流域不同季节植被NDVI与气温相关关系类型统计

Table 3. Correlations between NDVI and air temperature in different seasons in Bailongjiang basin

变化类型	春季（%）	夏季（%）	秋季（%）	生长季（%）
显著负相关	0.02	8.05	7.13	0.46
不显著负相关	3.03	39.86	45.72	31.54
不显著正相关	70.88	48.98	42.68	45.92
显著正相关	26.07	3.11	4.47	22.08
注：显著正、负相关指达到P<0.05的显著性水平。

下载: 导出CSV

表 1 白龙江流域不同季节NDVI变化类型统计

Table 1. Statistics of NDVI change types in Bailongjiang basin in different seasons

变化类型	NDVI变化（%）
变化类型	春季	夏季	秋季	生长季
减少（P<0.05）	24.85	46.69	62.17	46.89
增加（P<0.05）	75.15	53.31	37.83	53.11
减少（P<0.01）	43.21	63.00	71.90	58.91
增加（P<0.01）	56.79	37.00	28.10	41.09

下载: 导出CSV

表 2 白龙江流域年际NDVI与气温、降水相关关系类型统计

Table 2. Correlations between annual mean NDVI and air temperature and precipitation in Bailongjiang basin

变化类型	气温（%）	降水（%）
显著负相关	0.07	0.04
不显著负相关	20.00	13.67
不显著正相关	53.92	58.46
显著正相关	26.01	27.83
注：显著正、负相关指达到P<0.05的显著性水平。

下载: 导出CSV

表 4 白龙江流域不同季节植被NDVI与降水相关关系类型统计

Table 4. Correlations between NDVI and precipitation in different seasons in Bailongjiang basin

变化类型	春季（%）	夏季（%）	秋季（%）	生长季（%）
显著负相关	0.03	0.10	40.74	0.07
不显著负相关	2.78	22.33	28.21	10.73
不显著正相关	54.59	66.36	28.11	60.55
显著正相关	42.60	11.21	2.94	28.65
注：显著正、负相关指达到P<0.05的显著性水平。

下载: 导出CSV

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