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Table 1 Spatial parameters of the land type categories calculated taking account of their fire history

From: Effect of spring grass fires on vegetation patterns and soil quality in abandoned agricultural lands at local and landscape scales in Central European Russia

 

No of polygons

Area,%

Area, m2

Perimeter, m

Median of shape index

Nearest neighbor index

Mean

SE

Min

Max

Mean

SE

Min

Max

Forests

339

21.5

162,742

29,722

315

5,318,829

2207

228

73

35,569

1.67

0.68

Sparse forests

49

0.8

43,039

7316

1982

250,789

974

98

136

3164

1.31

0.53

Al1

19

0.4

60,662

12,921

7290

182,535

1225

154

399

2435

1.52

0.80

Al2

433

3.9

23,226

1417

1072

299,339

769

26

141

4483

1.46

0.48

Al3

480

6.6

35,346

2233

96

492,867

940

34

58

6389

1.46

0.50

Al4

1154

28.3

62,876

3228

595

1,908,624

1192

30

114

12,913

1.45

0.55

Arable lands

305

16.1

135,224

27,117

104

5,767,192

1522

132

74

24,005

1.38

0.35

Settlements

329

14.9

116,489

17,613

103

4,102,899

1454

104

85

18,118

1.35

0.49

Meadows

443

6.3

36,203

3313

176

875,350

1244

77

60

19,743

1.72

0.51

Water bodies

93

0.5

14,278

3158

593

209,607

573

71

107

4554

1.40

0.60

Others

21

0.6

75,336

27,758

4766

481,026

1677

523

296

10,953

1.48

0.37

  1. Al1, Al2, Al3, and Al4 are abandoned lands which differ in coverage of woody vegetation: Al1 with a uniform tree cover, Al2 with a dense tree cover in spots, Al3 with a tree cover of small density, and Al4 without trees or with a few single trees. SE is standard error of the mean; Min and Max are minimal and maximal values of the area and perimeter, respectively