Assessment of the changes of cod and color in rivers of Latvia during the last twenty years

被引：10

作者：

Apsite, E ^{[1
]}

Klavins, M ^{[1
]}

机构：

[1] Latvian State Univ, Fac Geog & Earth Sci, LV-1586 Riga, Latvia

来源：

ENVIRONMENT INTERNATIONAL | 1998年 / 24卷 / 5-6期

关键词：

D O I：

10.1016/S0160-4120(98)00039-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Analysis of long-term records of the concentrations of water color and chemical oxygen demand for nine river sites in Latvia is reported. The period of observations lasted for the last 20 years. Characteristic features of data include non-normal distributions, serial correlation, seasonality and presence of mostly significant downward trends. In Latvia, the main water quality changes could be explained by the changes of anthropogenic impact and the type of catchment management over the last 20 years. (C) 1998 Elsevier Science Ltd.

引用

页码：637 / 643

页数：7

共 15 条

[1]

*CENTR STAT BUR LA, 1996, STAT YB LATV

[2] LAND-USE CHANGE AND THE GLOBAL CARBON-CYCLE - THE ROLE OF TROPICAL SOILS [J].

DETWILER, RP .

BIOGEOCHEMISTRY, 1986, 2 (01) :67-93

[3]

HEMOND HF, 1990, ORGANIC ACIDS AQUATI, P501

[4]

KLAVINS M, 1992, HUMIC SUBSTANCES NAT

[5]

*LATV HYDR AG, YEARL B SURF WAT QUA

[6]

MARKETTA A, 1992, HYDROBIOLOGIA, V243, P465

[7] ORIGIN, COMPOSITION, AND FLUX OF DISSOLVED ORGANIC-CARBON IN THE HUBBARD BROOK VALLEY [J].

MCDOWELL, WH ;

LIKENS, GE .

ECOLOGICAL MONOGRAPHS, 1988, 58 (03) :177-195

[8]

*NEPP, 1995, MIN ENV PROT REG DEV

[9]

PHILLIPS RD, 1989, WQSTAT 2 WATER QUALI

[10]

PROCHAZKOVA L, 1977, PROG WATER TECHNOL, V8, P101

← 1 2 →