Decline in Planting Areas of Double-Season Rice by Half in Southern China over the Last Two Decades
文献类型：期刊论文
| 作者 | Zhu, Wenchao1; Peng, Xinqin1; Ding, Mingjun2; Li, Lanhui1; Liu, Yaqun3; Liu, Wei1; Yang, Mengdie1; Chen, Xinxin1; Cai, Jiale1; Huang, Hanbing1 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2024-02-01 |
| 卷号 | 16期号:3页码:19 |
| 关键词 | rice cropping intensity accelerated decrease rural labor force Southern China Google Earth Engine |
| DOI | 10.3390/rs16030440 |
| 通讯作者 | Li, Lanhui(lilh@xmut.edu.cn) |
| 英文摘要 | Accurately tracking the changes in rice cropping intensity is a critical requirement for policymakers to formulate reasonable land-use policies. Southern China is a traditional region for rice multi-cropping, yet less is known about its spatial-temporal changes under the background of rapid urbanization in recent decades. Based on images from Landsat and MODIS and multiple land cover products, the gap-filling and Savitzky-Golay filter method (GF-SG), the enhanced pixel-based phenological features composite approach (Eppf-CM), random forest (RF), and the difference in NDVI approach (DNDVI) were combined to map the rice cropping pattern with a spatial resolution of 30 x 30 m over Southern China in 2000 and 2020 through Google Earth Engine (GEE). Subsequently, the spatial-temporal changes in rice cropping intensity and their driving factors were examined by Getis-Ord Gi* and geographical detector. The results showed that the produced rice cropping pattern maps exhibited high accuracy, with kappa coefficients and overall accuracies exceeding 0.81 and 90%, respectively. Over the past two decades, the planting areas of double-season rice in Southern China decreased by 54.49%, and a reduction was observed across eight provinces, while only half of the provinces exhibited an increase in the planting areas of single-season rice. Compared to the year 2000, the planting area of the conversion from double- to single-season rice cropping systems in 2020 was 2.71 times larger than that of the conversion from single- to double-season rice cropping systems. The hotspots of the change in rice cropping intensity were mainly located in the central part of Southern China (excluding the Poyang Lake Plain). The decline in the rural labor force, coupled with >= 10 degrees C accumulated temperature and topographical factors, plays a crucial role in the decreased intensity of rice cropping. Our findings can be beneficial for realizing regional agricultural sustainability and food security. |
| WOS关键词 | MAPPING CROPPING INTENSITY ; LANDSAT ; REFLECTANCE ; DYNAMICS ; PATTERNS ; DATASET ; IMAGERY ; FUSION ; REGION ; EXTENT |
| 资助项目 | National Natural Science Foundation of China |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:001159178900001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/202674]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Lanhui |
| 作者单位 | 1.Xiamen Univ Technol, Sch Comp & Informat Engn, Xiamen 361024, Peoples R China 2.Jiangxi Normal Univ, Sch Geog & Environm, Nanchang 330028, Peoples R China 3.Chinese Acad Sci, Key Lab Reg Sustainable Dev Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Wenchao,Peng, Xinqin,Ding, Mingjun,et al. Decline in Planting Areas of Double-Season Rice by Half in Southern China over the Last Two Decades[J]. REMOTE SENSING,2024,16(3):19. |
| APA | Zhu, Wenchao.,Peng, Xinqin.,Ding, Mingjun.,Li, Lanhui.,Liu, Yaqun.,...&Lu, Jiaye.(2024).Decline in Planting Areas of Double-Season Rice by Half in Southern China over the Last Two Decades.REMOTE SENSING,16(3),19. |
| MLA | Zhu, Wenchao,et al."Decline in Planting Areas of Double-Season Rice by Half in Southern China over the Last Two Decades".REMOTE SENSING 16.3(2024):19. |
入库方式： OAI收割
来源：地理科学与资源研究所
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