gradient indicators 中文意思是什麼
gradient indicators
解釋
坡度指示器- gradient : adj. 1. 傾斜的。2. 【動物；動物學】步行的，能步行的。n. 1. 〈英國〉（道路的）傾斜度，坡度，坡路。2. 【物理學】梯度，陡度，（溫度、氣壓等的）變化率，梯度變化曲線。
- indicators : 指標
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The paper studied three aspects of extracelluar enzymes in sediments of the tidal flat wetland, namely 1 ) the distibution of five sorts of extracellular enzymes in sediments in the east end of chongming island along the elevation gradient or community succession series, the relationships between the activities of enzymes and the ecological factors, and functions of extracellular enzymes in the process of community succession ; 2 ) the effects of the heavy metal ions and edta on the activity of alkaline phosphatase in sediments of the east end of chongming island by adding and removing of heavy metal ions, discussing whether the activities of extracellular enzymes could be taken as the indicators for the environmental status ; 3 ) the variations of the activities of extracellular enzymes in sediments in the east end of hengsha island after the discarding clay
本文以長江口典型濕地?崇明東灘為例，首次研究了沿高程梯度或沿植被演替系列沉積物中堿性磷酸酶等五種胞外酶活性的空間分佈規律，分析了胞外酶活性與環境因子的相互關系及其產生機制，討論了胞外酶活性在濕地植被演替中的作用。同時以崇明東灘沉積物為對象，運用重金屬離子的添加和去除等方法，研究了重金屬離子對沉積物中堿性磷酸酶活性的影響，利用胞外酶活性的變化探討了崇明東灘重金屬污染的狀況。此外，本文還研究了橫沙東灘吹泥試驗工程對沉積物環境因子和胞外酶活性的影響並進行了對比分析。 -
Secondly, the spatial structure of land price in beijing and its causes are analyzed by the statistical method and gis spatial techniques. the results show that the spatial distribution of land prices is not only of continuity, but also of variability. land prices gradient and slope direction are put forward as two indicators of the spatial distribution of land price, and they are still of spatial differentia
其次，通過採用統計分析和gis空間分析相結合的方法對北京市地價空間結構及其成因進行分析，結果表明：地價的分佈在空間上既有連續性，也存在變異性；不同用途地價的空間分佈也不盡相同；提出了地價梯度和地價指向，作為表徵地價空間變化的兩項指標，也存在明顯的空間差異。
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