CHANGES OF PLANT COVER AND LAND-USE TYPES (1950S TO 1980S) IN 3 MIRE RESERVES AND THEIR NEIGHBORHOOD IN ESTONIA

被引：31

作者：

AAVIKSOO, K

机构：

[1] Department of Physical Geography and Landscape Ecology, Tartu University, Tartu

来源：

LANDSCAPE ECOLOGY | 1993年 / 8卷 / 04期

关键词：

AERIAL PHOTOGRAPH; CLASSIFICATION; MIRE LANDSCAPE; TYPOLOGICAL MAPPING (REPEATED); TRANSITION MATRIX; DYNAMICS; FORECAST;

D O I：

10.1007/BF00125134

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The dynamics of plant cover and land use types in three study areas - Keava (1192.05 ha), Meenikonna (1513.35 ha) and Natsi-Volla (888.61 ha) mire landscapes, each divided into natural (N) and anthropogenous (A) subareas, was investigated by repeated aerial photo (black-and-white panchromatic, 1: 10,000) interpretation. Nineteen plant cover and land use (PC&LU) types were differentiated and three contour maps were drawn for each study area (corresponding to 1950's, 1960's and 1980's). The dynamics of mire landscapes were modelled by transition matrices P = [p(ij)], which contain the transition probabilities between i-th and j-th PC&LU types during the time interval between the aerial photographs. A total of 12 transition matrices were constructed. In A-subareas peat milling was started in the middle of the 60's whereas N-subareas acquired mire reserve status in 1981, which is manifested in a different development. 93% of N-subarea and 69% of the A-subarea remained unchanged from the 50's to the 80's. The increase of anthropogenous land use types in A-subareas of Keava, Meenikonna and Natsi-Volla were respectively 0.84%, 0.32% and 1.17% per year. Two different matrices (I and II period) were used to predict the future state of the study areas. The applicability of the transition matrix model has been discussed by comparing matrices of different base periods. Errors arising from photointerpretation, contour input, (transition) area measurement, matrix reduction etc. are evaluated.

引用

页码：287 / 301

页数：15

共 43 条

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