| 影响水库鱼产力的基础环境因素的分析 |
| |
| 引用本文： | 焦念志,李德尚.影响水库鱼产力的基础环境因素的分析[J].海洋湖沼通报,1993(1):83-89. |
| |
| 作者姓名： | 焦念志 李德尚 |
| |
| 作者单位： | 青岛海洋大学 中国科学院海洋研究所博士后流动站(焦念志)，青岛海洋大学 (266071)。(李德尚) |
| |
| 基金项目： | 国家教委博士学科点专项基金 |
| |
| 摘 要： | 本文以山东省30座代表性的大中型水库为样本,对影响水库鱼产力的基础环影境条件——集雨区性状、水库形态和水文状况各方面共计21项变量,运用聚类分析、主成分分析、相关分析和逐步回归等方法进行了分析和筛选。结果表明,影响水库鱼产力的主要因素是:集雨区的土壤、相对人口密度、植被覆盖率以及水文换率等。其中,最重要的是土壤肥力,文中建立的土壤肥力指数(SF1),第一次定量证明了集雨区、土壤对水库营养水平乃至鱼产力的决定性作用。这些关键性影响因素可作为评价水库鱼产力的环境指标。
|
| 关 键 词： | 水库 环境因素 多元分析 鱼 产量 |
AN ANALYSIS OF THE BASIC ENVIRONMENTAL FACTORS AFFECTING FISH PRODUCTIVITY IN RESERVOIRS |
| |
| Jiao Nianzhi,Li Deshang.AN ANALYSIS OF THE BASIC ENVIRONMENTAL FACTORS AFFECTING FISH PRODUCTIVITY IN RESERVOIRS[J].Transaction of Oceanology and Limnology,1993(1):83-89. |
| |
| Authors: | Jiao Nianzhi Li Deshang |
| |
| Abstract: | An investigation on the basic environmental factors possibly affecting fish productivity of 30 representative reservoirs in Shandong Province was conducted. The results of cluster analysis, principal component analysis, correlation analysis and stepwise regression analysis done on the data indicated that, among the 21 factors investigated, only a few were of important value in indicating the reservoir. fish-productivity, i. e., the soil fertility of drainage area, the population inhabited in drainage basin reservoir area, the vegetational cover rate of drainage basin and. the water exchange rate of reservoir, especially the soil factors accounted for great deal of the variation of mean fish yields of different reservoirs. These factors can be used as indices for evaluating fish productivity in reservoirs. |
| |
| Keywords: | fish productivity reservoir environmental factor |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
