A stratified optimization method for a multivariate marine environmental monitoring network in the Yangtze River estuary and its adjacent sea
文献类型：SCI/SSCI论文
| 作者 | Gao B. B.; Wang, J. F.; Fan, H. M.; Xu, K.; Hu, M. G.; Chen, Z. Y. |
| 发表日期 | 2015 |
| 关键词 | monitoring site optimization spatial simulated annealing mean of surface with nonhomogeneity marine environment principal component analysis vegetable cultivation area constrained optimization risk-assessment china variance quality fronts performance simulation |
| 英文摘要 | An efficient monitoring network is very important in accessing the marine environmental quality and its protection and management. In an estuary, there are fronts that separate distinctly different water masses and affect material transport, nutrient distribution, pollutant aggregation, and diffusion. This stratified heterogeneous surface neither satisfies the stationary requirements of kriging, nor can be handled adequately by removing a spatially continuous trend. This article presents a stratified optimization method for a multivariate monitoring network. In this method, principal component analysis (PCA) was used to reduce the dimensionality of the correlated targets, and the mean of surface with nonhomogeneity (MSN) method was adopted to produce the best linear unbiased estimator for a spatially stratified heterogeneous surface that failed to satisfy the requirements for a kriging estimate. The existing monitoring network in the Yangtze River estuary and its adjacent sea, which was designed by purposive sampling year ago was optimized as an illustration. The optimization consisted of two steps: reduce the redundant monitoring sites and then optimally add new sites to the remaining sites. After optimization, the inclusion of 51 sites in the monitoring network was found to produce a smaller total estimated error than that of the current network, which has 70 sites; moreover, the use of 55 sites can produce a higher precision of estimation for all three principal components (PCs) than that of the current 70 sites. The results demonstrated that the proposed method is suitable for optimizing environmental monitoring sites that have dominant stratified nonhomogeneity and that involve multiple factors. |
| 出处 | International Journal of Geographical Information Science |
| 卷 | 29 |
| 期 | 8 |
| 页 | 1332-1349 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1365-8816 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/38435]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Gao B. B.,Wang, J. F.,Fan, H. M.,et al. A stratified optimization method for a multivariate marine environmental monitoring network in the Yangtze River estuary and its adjacent sea. 2015. |
入库方式： OAI收割
来源：地理科学与资源研究所
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