Historical Trajectories of the Evolved Cropland Features and Their Reshaped Influences on Agricultural Landscapes and Ecosystem Services in China's Sanjiang Commodity Grain Base
文献类型：期刊论文
| 作者 | Pan, Tao1,2; Liu, Kun1; Yin, Zherui1,2,3; Li, Zexian1; Shi, Lin1 |
| 刊名 | LAND
 |
| 出版日期 | 2026-01-16 |
| 卷号 | 15期号:1页码:175 |
| 关键词 | cropland structure agricultural landscape ecosystem service China's grain-producing base |
| DOI | 10.3390/land15010175 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | Drastic cropland expansion and its internal structural changes have had an obvious impact on agricultural landscapes and ecosystem services. However, a prolonged investigation of this effect is still lacking in China's grain-producing bases, such as Sanjiang Plain. To address this issue, half a century of study on the 'land trajectory migration-landscape evolution-ecological effect,' covering the period 1970-2020, was elucidated using the synergistic methodology of spatial analysis technology, the reclamation rate algorithm, the landscape indicator, and the newly established ecosystem service improvement model. Satellite observation results indicate that the cropland area exhibited a substantial expansion trend from 23,672.69 km2 to 42,856.17 km2 from 1970 to 2020, representing a net change of +19,183.48 km2 and a huge growth rate of 81.04%, which led to an obvious improvement in the level of agricultural cultivation. Concurrently, the internal structure of the cropland underwent dramatic restructuring, with rice fields increasing from 6.46% to 53.54%, while upland fields decreased from 93.54% to 46.46%. In different regions, spatially heterogeneous improvements of 2.64-52.47% in agricultural cultivation levels across all cities were observed. From 1970 to 2020, the tracked cropland center of gravity trajectories exhibited a distinct biphasic pattern, initially shifting westward and then followed by a southward transition, accumulating a displacement of 19.39 km2. As for the evolved agricultural landscapes, their integrity has improved (SHDI = -0.08%), accompanied by increased connectivity (CON = +8.82%) and patch edge integrity (LSI = -15.71%) but also by reduced fragmentation (PD = -48.14%). Another important discovery was that the evaluated ecosystem services continuously decreased from 2337.84 x 108 CNY in 1970 to 1654.01 x 108 CNY in 2020, a net loss of -683.84 x 108 CNY and a huge loss rate of 33.65%, accompanied by a center-periphery gradient pattern whereby degradation propagated from the low-value central croplands to the high-value surrounding natural covers. These discoveries will play a significant role in guiding farmland structure reformation, landscape optimization, and ecosystem service improvement. |
| URL标识 | 查看原文 |
| WOS关键词 | LAND-USE ; INDEXES ; IMPACT ; PLAIN |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001671610000001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221037]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Yin, Zherui |
| 作者单位 | 1.Qufu Normal Univ, Sch Geog & Tourism, Sino Belgian Joint Lab Geoinformat, 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.Inner Mongolia Normal Univ, Coll Geog Sci, Hohhot 010022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Pan, Tao,Liu, Kun,Yin, Zherui,et al. Historical Trajectories of the Evolved Cropland Features and Their Reshaped Influences on Agricultural Landscapes and Ecosystem Services in China's Sanjiang Commodity Grain Base[J]. LAND,2026,15(1):175. |
| APA | Pan, Tao,Liu, Kun,Yin, Zherui,Li, Zexian,&Shi, Lin.(2026).Historical Trajectories of the Evolved Cropland Features and Their Reshaped Influences on Agricultural Landscapes and Ecosystem Services in China's Sanjiang Commodity Grain Base.LAND,15(1),175. |
| MLA | Pan, Tao,et al."Historical Trajectories of the Evolved Cropland Features and Their Reshaped Influences on Agricultural Landscapes and Ecosystem Services in China's Sanjiang Commodity Grain Base".LAND 15.1(2026):175. |
入库方式： OAI收割
来源：地理科学与资源研究所
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