Geostatistical analysis of chlorophyll a in freshwater ecosystems
文献类型：期刊论文
| 作者 | Zhao, B; Cai, QH |
| 刊名 | JOURNAL OF FRESHWATER ECOLOGY
 |
| 出版日期 | 2004-12-01 |
| 卷号 | 19期号:4页码:613-621 |
| 关键词 | PHYTOPLANKTON PATCHINESS NONLINEAR-ANALYSIS SPATIAL STRUCTURE LAKES |
| ISSN号 | 0270-5060 |
| 通讯作者 | Cai, QH, Chinese Acad Sci, Inst Hydrol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China |
| 中文摘要 | Horizontal spatial patterns of chlorophyll a in Meiziya Reservoir, Hubei Province, China were analyzed once each month during May, June and July 1997. Two geostatistical techniques, semivariance and fractal analysis, were used to determine variation in chlorophyll a over the whole study area (isotropic) and in different directions (anisotropic). Both techniques provided useful information for detecting and assessing spatial pattern changes of chlorophyll a in freshwater environments. Based on our case study, the distribution of chlorophyll a shifted from aggregated to random distribution in the case of small rainfall event, and then returned to the aggregated distribution after a large rainfall event. On the other hand, the distribution of chlorophyll a became more heterogeneous or random in the direction of water flow (S-N direction) when rainfall events occurred, which was enhanced by rainfall intensity. In contrast, the influence of water flow on the spatial patterns was weak in the E-W direction, and thus the distribution of chlorophyll a remained aggregate with a moderate spatial heterogeneity. |
| 英文摘要 | Horizontal spatial patterns of chlorophyll a in Meiziya Reservoir, Hubei Province, China were analyzed once each month during May, June and July 1997. Two geostatistical techniques, semivariance and fractal analysis, were used to determine variation in chlorophyll a over the whole study area (isotropic) and in different directions (anisotropic). Both techniques provided useful information for detecting and assessing spatial pattern changes of chlorophyll a in freshwater environments. Based on our case study, the distribution of chlorophyll a shifted from aggregated to random distribution in the case of small rainfall event, and then returned to the aggregated distribution after a large rainfall event. On the other hand, the distribution of chlorophyll a became more heterogeneous or random in the direction of water flow (S-N direction) when rainfall events occurred, which was enhanced by rainfall intensity. In contrast, the influence of water flow on the spatial patterns was weak in the E-W direction, and thus the distribution of chlorophyll a remained aggregate with a moderate spatial heterogeneity. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Ecology; Limnology |
| 类目[WOS] | Ecology ; Limnology |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 关键词[WOS] | PHYTOPLANKTON PATCHINESS ; NONLINEAR-ANALYSIS ; SPATIAL STRUCTURE ; LAKES |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000225656300012 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/9358]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.Fudan Univ, Inst Biodivers Sci, Minist Educ, Key Lab Biodivers Sci & Ecol Engn, Shanghai 200433, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, B,Cai, QH. Geostatistical analysis of chlorophyll a in freshwater ecosystems[J]. JOURNAL OF FRESHWATER ECOLOGY,2004,19(4):613-621. |
| APA | Zhao, B,&Cai, QH.(2004).Geostatistical analysis of chlorophyll a in freshwater ecosystems.JOURNAL OF FRESHWATER ECOLOGY,19(4),613-621. |
| MLA | Zhao, B,et al."Geostatistical analysis of chlorophyll a in freshwater ecosystems".JOURNAL OF FRESHWATER ECOLOGY 19.4(2004):613-621. |
入库方式： OAI收割
来源：水生生物研究所
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