A novel model to assess soil productivity in the dry-hot valleys of China
文献类型：期刊论文
| 作者 | DUAN Xing-wu; HAN Xu; HU Jin-ming; FENG De-tai; RONG Li |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2017-04 |
| 卷号 | 14期号:4页码:705-715 |
| 关键词 | Soil Productivity Productivity Index Model Redundancy Analysis Dry-hot Valleys |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-016-4147-4 |
| 通讯作者 | HU Jin-ming |
| 文献子类 | 期刊论文 |
| 英文摘要 | Accurate evaluation of soil productivity has been a long-standing challenge. Although numerous models for productivity assessment exist, most are cumbersome to use and require substantial parameter inputs. We developed a new empirical soil productivity model based on field investigations of soil erosion, soil physicochemical properties, and crop yields in the dry-hot valleys (DHVs) in China. We found that soil pH, and organic matter and available potassium contents significantly affected crop yields under eroded conditions of the DHVs. Moreover, available potassium content was the key factor affecting soil productivity. We then modified an existing soil productivity model by adding the following parameters: contents of effective water, potassium, organic matter, and clay, soil pH, and root weighting factor. The modified soil productivity model explained 63.5% of the crop yield. We concluded that the new model was simple, realistic, and exhibited strong predictability. In addition to providing an accurate assessment of soil productivity, our model could potentially be applied as a soil module in comprehensive crop models. |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/18552]  |
| 专题 | Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.4 |
| 推荐引用方式 GB/T 7714 | DUAN Xing-wu,HAN Xu,HU Jin-ming,et al. A novel model to assess soil productivity in the dry-hot valleys of China[J]. Journal of Mountain Science,2017,14(4):705-715. |
| APA | DUAN Xing-wu,HAN Xu,HU Jin-ming,FENG De-tai,&RONG Li.(2017).A novel model to assess soil productivity in the dry-hot valleys of China.Journal of Mountain Science,14(4),705-715. |
| MLA | DUAN Xing-wu,et al."A novel model to assess soil productivity in the dry-hot valleys of China".Journal of Mountain Science 14.4(2017):705-715. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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