globalchange  > 气候变化事实与影响
DOI: 10.1016/j.scitotenv.2018.10.415
WOS记录号: WOS:000458626800074
论文题名:
Satellite data indicates multidimensional variation of agricultural production in land consolidation area
作者: Hong, Changqiao1,2; Jin, Xiaobin1; Ren, Jie1; Gu, Zhengming1; Zhou, Yinkang1
通讯作者: Jin, Xiaobin
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
ISSN: 0048-9697
EISSN: 1879-1026
出版年: 2019
卷: 653, 页码:735-747
语种: 英语
英文关键词: Land use ; Net primary productivity ; NDVI ; Farmland productivity ; Irrigation capacity
WOS关键词: NET PRIMARY PRODUCTIVITY ; CLIMATE-CHANGE ; CROP MANAGEMENT ; FOOD SECURITY ; TIME-SERIES ; SPATIAL-DISTRIBUTION ; CUSTOMARY LANDS ; SOIL-EROSION ; CHINA ; IMPACT
WOS学科分类: Environmental Sciences
WOS研究方向: Environmental Sciences & Ecology
英文摘要:

Land consolidation (LC) is an innovative way to improve agricultural production. Spatiotemporal pattern of agricultural production in land consolidation area (LCA) is difficult to quantify with limited field observations and survey data. Satellite data has advantages on recording vegetation status changes frequently, which is very supportive of estimating variation of agricultural production. In this paper, we used Net Primary Productivity (NPP), Normal Difference Vegetation Index (NDVI), and Multiple Band Drought Index (MBDI) from satellite data, to examine five attributes (irrigation capacity, multiple cropping index, crop phenology, farmland productivity, and production stability) of agricultural production after land consolidation (LC) at a site in China. Results show that there were no significant spatial differences in irrigation capacity for farmland in few years after LC due to consistent climatic conditions and uniform irrigation and drainage system. Multiple cropping index shows a pattern of "first reducing, then growing, last reducing", which may result from the disturbed "water-soil" environment and weak farmers' intention. Interannual variation of spatial distribution of phenology for the second-season crop is larger than that for the first-season crop since LC implementation adjusts short-term land use and management. With the improvement of production conditions and balanced distribution of production elements, farmland productivity has been improved and its differences among various farmland patches imply a reducing trend. Production in LCA is slightly less stable than that in the control area (TCA) where LC is not carried out because of limited and short-term effect from LC. We concluded that satellite data presents variation of agricultural production in LCA from different dimensions of time, space and attributes. Multidimensional variation of agricultural production is decided by several factors, including climate condition, LC activity, and farmers' intention. (c) 2018 Published by Elsevier B.V.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/130214
Appears in Collections:气候变化事实与影响

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作者单位: 1.Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 210023, Jiangsu, Peoples R China
2.Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Jiangsu, Peoples R China

Recommended Citation:
Hong, Changqiao,Jin, Xiaobin,Ren, Jie,et al. Satellite data indicates multidimensional variation of agricultural production in land consolidation area[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019-01-01,653:735-747
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