Spatiotemporal Heterogeneity Monitoring of Cropland Evolution and Its Impact on Grain Production Changes in the Southern Sanjiang Plain of Northeast China
文献类型：期刊论文
| 作者 | Pan, Tao1,2,3; Zhang, Ru4 |
| 刊名 | LAND
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 11期号:8页码:18 |
| 关键词 | land evolution landscape food security southern Sanjiang Plain of China |
| DOI | 10.3390/land11081159 |
| 通讯作者 | Pan, Tao(pantao@qfnu.edu.cn) |
| 英文摘要 | High-speed cropland changes are taking place in Northeast China, bringing about the sustainable changes in ecological landscape and food production; however, the lack of continuous research limits the revelation of new findings in this region. The integrated approach of land migration tracking, ecological landscape and mathematical statistics was established to conduct a comprehensive survey of land change-landscape-food security in a typical grain-planting region of Northeast China to reveal new changes from 1990 to 2020. Results display that the cropland area continued to increase from 25,885.16 km(2) in 1990 to 31,144.46 km(2) in 2020, leading to the loss of forest land, grassland, water body and unused land. For cropland structure, the proportion of paddy fields in cropland increased rapidly from 7.18 to 39.53% during 1990-2020; in contrast, upland crops decreased sharply. The richness of landscape presented gradually complex characteristics with SHDI from 0.258 to 0.671 and other ecological indicators underwent similar changes with strong regularity. Total grain production displayed a continuous increase, with values from 523.79 x 10(4) t to 1839.12 x 10(4) t, increasing by 2.51 times from 1990 to 2020. We also revealed the contribution rate of unchanged upland crops to grain increments was the largest (i.e., 46.29%), and the conversion of internal cropland structure (i.e., the paddy fields converted from upland crops) contributed 12.17% from 1990 to 2020, showing a positive signal for food security. These new findings provide studies on land use change, ecological landscape and food security in China and abroad. |
| WOS关键词 | GLOBAL CULTIVATED LAND ; SPATIAL-PATTERNS ; FOOD SECURITY ; LANDSCAPE ; REGION ; TRANSITION ; PROTECTION ; MANAGEMENT ; POLICY ; AREAS |
| 资助项目 | Humanity and Social Science Youth Foundation of the Ministry of Education of China[21YJCZH111] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000845822700001 |
| 出版者 | MDPI |
| 资助机构 | Humanity and Social Science Youth Foundation of the Ministry of Education of China |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/182089]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Pan, Tao |
| 作者单位 | 1.Qufu Normal Univ, Ctr Land Studies, Rizhao 276826, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 3.Qufu Normal Univ, Sch Geog & Tourism, Rizhao 276826, Peoples R China 4.Northeast Agr Univ, Sch Publ Adm & Law, Harbin 150030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Tao,Zhang, Ru. Spatiotemporal Heterogeneity Monitoring of Cropland Evolution and Its Impact on Grain Production Changes in the Southern Sanjiang Plain of Northeast China[J]. LAND,2022,11(8):18. |
| APA | Pan, Tao,&Zhang, Ru.(2022).Spatiotemporal Heterogeneity Monitoring of Cropland Evolution and Its Impact on Grain Production Changes in the Southern Sanjiang Plain of Northeast China.LAND,11(8),18. |
| MLA | Pan, Tao,et al."Spatiotemporal Heterogeneity Monitoring of Cropland Evolution and Its Impact on Grain Production Changes in the Southern Sanjiang Plain of Northeast China".LAND 11.8(2022):18. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。