帮助 关于我们

返回检索结果

南方水稻复种指数变化对国家粮食产能的影响及其政策启示
The impact of paddy rice multiple cropping index changes in Southern China on national grain production capacity and its policy implications

查看参考文献32篇

蒋敏 1,2   李秀彬 1,2   辛良杰 1   谈明洪 1,2 *  
文摘 中国南方地区水稻生产的变化对国家粮食安全具有重要影响。本文利用Landsat数据提取1990-2015年南方地区水稻种植制度分布及变化,并分析其对粮食产能的影响。结果表明:① 1990-2015年,水稻复种指数从148.3%下降到129.3%,双季稻改种单季稻(“双改单”)损失的播种面积为253.16万hm~2,区域上以长江中下游地区变化最为突出。南方地区水稻种植制度整体呈现由北向南“双退单进”的变化格局;② 1990-2015年,“双改单”导致全国水稻产量减少6.1%,粮食产量减少2.6%。水稻主产区湖南省和江西省以及经济发展较好的浙江省因“双改单”水稻减产幅度较大,均超过13%;③充分利用“双改单”稻田的粮食产能相当于新增耕地223.3万hm~2,为2001-2015年通过土地整治项目新增耕地总量的54%,是2016-2020年全国新增耕地规划目标的1.7倍,可节省约1674.4亿元新增耕地开垦费用。因此,与其追求低质量的“新”耕地,不如充分利用已有的高质量“旧”耕地,政府应转变耕地占补平衡的考核方式,将因提高复种指数增加的播种面积纳入补充指标。
其他语种文摘 Changes of rice production in Southern China are crucial to national food security. This study employed Landsat images to map the distributions of paddy rice cropping systems in Southern China in 1990 and 2015, and then explored the impact of rice multiple cropping index changes on grain production capacity. The results indicated that: (1) From 1990 to 2015, the multiple cropping index of rice decreased from 148.3% to 129.3%, and the loss area due to conversion of double cropping rice to single cropping rice ("double to single") was 253. 16×10~4 hm~2. The area with most dramatic changes was located in the Middle-Lower Yangtze Plain. The rice cropping systems in Southern China showed a change pattern of "double cropping rice shrinkage and single cropping rice expansion" from north to south. (2) From 1990 to 2015, "double to single" led to a reduction of 6.1% and 2.6% in rice production and grain production, respectively. Hunan and Jiangxi, located in the main rice producing areas, as well as Zhejiang with better economic development, had a large reduction in rice production due to "double to single", all exceeding 13%. (3) The grain production capacity of "double to single" paddy field is equivalent to that of 223.3×10~4 hm~2 of newly reclaimed cultivated land. The equivalent newly reclaimed cultivated land is 54% of the total newly reclaimed cultivated land through the land consolidation project during 2001-2015, as well as 1.7 times the target of the newly cultivated land goal for the national land consolidation plan (2016-2020). Making full use of the "double to single" paddy field can save approximately 167.44 billion yuan newly reclaimed cultivated land costs. Therefore, instead of pursuing low- quality "new" arable land, it is better to make full use of the existing high- quality "old" arable land. The government should change the assessment method of cultivated land balance, and incorporate the sown area increased by improving multiple cropping index into the cultivated land compensation indicator.
来源 地理学报 ,2019,74(1):32-43 【核心库】
DOI 10.11821/dlxb201901003
关键词 水稻复种指数 ; 粮食安全 ; 双改单 ; 南方地区 ; 政策启示
地址

1. 中国科学院地理科学与资源研究所, 中国科学院陆地表层格局与模拟重点实验室, 北京, 100101  

2. 中国科学院大学, 北京, 100049

语种 中文
文献类型 研究性论文
ISSN 0375-5444
学科 社会科学总论
基金 国家自然科学基金项目
文献收藏号 CSCD:6424948

参考文献 共 32 共2页

1.  Schmidhuber J. Global food security under climate change. Proceedings of the National Academy of Sciences of the United States of America,2007,104(50):19703-19708 CSCD被引 59 次    
2.  Huang J. Understanding recent challenges and new food policy in China. Global Food Security,2017,12:119-126 CSCD被引 11 次    
3.  傅泽强. 中国粮食安全与耕地资源变化的相关分析. 自然资源学报,2001,16(4):313-319 CSCD被引 210 次    
4.  中华人民共和国国家统计局. 中国统计年鉴2017,2017 CSCD被引 45 次    
5.  Lichtenberg E. Assessing farmland protection policy in China. Land Use Policy,2008,25(1):59-68 CSCD被引 71 次    
6.  Kong X B. China must protect high-quality arable land. Nature,2014,506(7486):7 CSCD被引 35 次    
7.  Zhang K. Land use change and land degradation in China from 1991 to 2001. Land Degradation & Development,2007,18(2):209-219 CSCD被引 19 次    
8.  Liu X. Review of the evolution of cultivated land protection policies in the period following China's reform and liberalization. Land Use Policy,2017,67:660-669 CSCD被引 14 次    
9.  Jin X. Co-ordination of land exploitation, exploitable farmland reserves and national planning in China. Land Use Policy,2016,57:682-693 CSCD被引 4 次    
10.  Song W. Farmland conversion decreases regional and national land quality in China. Land Degradation & Development,2017,28(2):459-471 CSCD被引 20 次    
11.  Song W. The effects of China's cultivated land balance program on potential land productivity at a national scale. Applied Geography,2014,46:158-170 CSCD被引 31 次    
12.  Wang J. Land-use changes and policy dimension driving forces in China:Present, trend and future. Land Use Policy,2012,29:737-749 CSCD被引 46 次    
13.  杨万江. 我国双季稻区复种变化及影响因素分析:基于10个水稻主产省的实证研究. 农村经济,2013(11):24-28 CSCD被引 8 次    
14.  Wang R. Inter-provincial differences in rice multi-cropping changes in main double-cropping rice area in China:Evidence from provinces and households. Chinese Geographical Science,2018:1-12 CSCD被引 1 次    
15.  辛良杰. 近年来我国南方双季稻区复种的变化及其政策启示. 自然资源学报,2009,24(1):58-65 CSCD被引 76 次    
16.  程叶青. 中国粮食生产的区域格局变化及东北商品粮基地的响应. 地理科学,2005,25(5):3-10 CSCD被引 10 次    
17.  谢花林. 1998-2012年中国耕地复种指数时空差异及动因. 地理学报,2015,70(4):604-614 CSCD被引 31 次    
18.  Qiu B. Rice cropping density and intensity lessened in southeast China during the twenty-first century. Environmental Monitoring and Assessment,2016,188(1):5 CSCD被引 3 次    
19.  丁明军. 1999-2013年中国耕地复种指数的时空演变格局. 地理学报,2015,70(7):1080-1090 CSCD被引 34 次    
20.  Liu J. Spatiotemporal characteristics, patterns, and causes of land-use changes in China since the late 1980s. Journal of Geographical Sciences,2014,24(2):195-210 CSCD被引 52 次    
引证文献 23 篇

1 姚成胜 中国农业经济发展的区域差异、时空格局演变及其驱动机制分析 农业现代化研究,2019,40(4):537-546
CSCD被引 5 次

2 林相泽 基于K-SVD和正交匹配追踪稀疏表示的稻飞虱图像分类方法 农业工程学报,2019,35(19):216-222
CSCD被引 4 次

显示所有23篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

版权所有 ©2008 中国科学院文献情报中心 制作维护：中国科学院文献情报中心
地址：北京中关村北四环西路33号 邮政编码：100190 联系电话：(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号