黄河流域植被NPP时空变化及其对水热条件和退耕还林还草工程实施的响应

doi:10.13474/j.cnki.11-2246.2023.0034

测绘通报 ›› 2023, Vol. 0 ›› Issue (2): 15-20.doi: 10.13474/j.cnki.11-2246.2023.0034

黄河流域植被NPP时空变化及其对水热条件和退耕还林还草工程实施的响应

谢艳玲¹, 夏正清², 王涛³, 张政亮³, 朱冬春⁴

1. 贵州省第一测绘院, 贵州贵阳 550025;
2. 北京中色测绘院有限公司, 北京 100012;
3. 西安科技大学测绘科学与技术学院, 陕西西安 710054;
4. 西安中交公路岩土工程有限责任公司, 陕西西安 710075

收稿日期:2022-07-20 发布日期:2023-03-01
通讯作者: 王涛。E-mail:wht432@163.com
作者简介:谢艳玲(1985-),女,硕士,高级工程师,从事测绘与地理信息研究。E-mail:48041545@qq.com
基金资助:
国家自然科学基金(41977059);陕西省软科学研究计划(2022KRM034);江西省交通运输厅科技项目(2020H0011)

Temporal and spatial variation of vegetation net primary product and its response to hydrothermal conditions and grain for green project in the Yellow River basin

XIE Yanling¹, XIA Zhengqing², WANG Tao³, ZHANG Zhengliang³, ZHU Dongchun⁴

1. First Surveying and Mapping Institute of Guizhou Province, Guiyang 550025, China;
2. Beijing CNNC Institute of Surveying and Mapping Co., Ltd., Beijing 100012, China;
3. College of Geomatics, Xi'an University of Science and Technology, Xi'an 710054, China;
4. Xi'an China Highway Geotechnical Engineering Co., Ltd., Xi'an 710075, China

Received:2022-07-20 Published:2023-03-01

摘要/Abstract

摘要： 本文以MOD17A3HGF植被净初级生产力(NPP)数据为基础,结合气温、降水及DEM数据,开展了2000-2020年黄河流域植被NPP时空变化特征及其对水热条件和退耕还林还草工程实施的响应研究。结果表明:①黄河流域植被NPP总体呈显著线性增加趋势 (P<0.001), 其中植被NPP增速中游地区高于下游、下游高于上游地区。黄河流域植被NPP显著增加趋势占95.29%,集中分布在黄河流域中游地区(黄土高原地区);显著减少的区域主要集中在人口分布密集的城市及其周边区域。②黄河流域植被NPP与年平均气温、年降水量均以正相关为主,其中显著正相关分别占11.15%和42.35%,分别呈东-西向和南-北向分布。③黄河流域中游地区坡度为[15°,25°]区域植被NPP增速最快,其次为坡度>25°和<15°区域,反映出退耕还林还草工程的实施对黄河流域中部黄土高原地区的植被改善具有一定的作用。

关键词: 气温, 降水, 净初级生产力, 植被, 时空变化, 黄河流域

Abstract: On the basis of MOD17A3HGF vegetation primary productivity (NPP) data, as well as the air temperature, precipitation and DEM data, the temporal and spatial change characteristics of vegetation NPP in the Yellow River basin from 2000 to 2020 and its response to hydrothermal and grain for green project (GGP) is carried out. The results show that: ① the overall trend of vegetation NPP in the Yellow River basin shows a significant linear increase (P<0.001), and the growth rate of vegetation NPP in the middle reaches is higher than that in the lower reaches, and the lower reaches is higher than the upper reaches. The vegetation NPP in the Yellow River basin increase significantly, accounting for 95.29%, which is concentrate in the middle reaches (the Loess Plateau region), while the significantly decrease areas are mainly concentrated in densely populated urban areas. ② The vegetation NPP in the Yellow River basin is mainly positively correlated with the annual average air temperature and annual precipitation, of which the significant positive correlations account for 11.15% and 42.35%, respectively, and which distribute in east-west and south-north direction, respectively. ③ The growth of vegetation NPP in the slope of [15°,25°] region is the fastest, followed by the >25° and <15° regions. It reflects the vegetation improvement effect of the grain for green project on the Loess Plateau in the middle reaches of the Yellow River basin.

Key words: air temperature, precipitation, NPP, vegetation, spatio-temporal variation, the Yellow River basin

中图分类号:

P237

谢艳玲, 夏正清, 王涛, 张政亮, 朱冬春. 黄河流域植被NPP时空变化及其对水热条件和退耕还林还草工程实施的响应[J]. 测绘通报, 2023, 0(2): 15-20.

XIE Yanling, XIA Zhengqing, WANG Tao, ZHANG Zhengliang, ZHU Dongchun. Temporal and spatial variation of vegetation net primary product and its response to hydrothermal conditions and grain for green project in the Yellow River basin[J]. Bulletin of Surveying and Mapping, 2023, 0(2): 15-20.

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黄河流域植被NPP时空变化及其对水热条件和退耕还林还草工程实施的响应

Temporal and spatial variation of vegetation net primary product and its response to hydrothermal conditions and grain for green project in the Yellow River basin

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