A8 FIELD INVENTORY

A8 FIELD INVENTORY

A8.1 FOREST AREA

The Forest Survey of India had been conducting field inventory in the forest areas of the country ever since its inception as PISFR in 1965. An inventory report provides total growing stock, vol/ha, distribution of stems, stem/ha, details of area estimates according to land use, legal status, topography, forest strata, incidences of fire, grazing, regeneration status etc. So far more than 130 inventory reports have been published by the FSI. These reports are useful to the State Forest Departments for planning and management.

PISFR had conducted field inventory in the selected areas covering 0.23 million sq.km. upto 1981. After the upgradation and reorganisation of PISFR as FSI in 1981, field inventory of the entire forest area of the country was included in the mandate. Since then an additional area of 0.45 million sq.km has been inventoried constituting about 80% forest area of the country. Some of the areas particularly of the North Eastern region have been inventoried twice. The area covered by field inventory so far, is given in Figure 8.1.

Details of inventories conducted between 1995 and 1997 are given in Table 8.1.

Sampling Design – Forest Area

A common inventory design is followed for the whole country under which the SOI toposheet of 1:50,000 scale is divided into 2.5'X2.5' grids, each grid representing about 18 - 20 sq. km. area. In each grid, two plots of 0.1 ha. each are marked on the toposheets. The selection of the first plot is random and the second plot is the mirror image of the first. The plots falling within the forest area are surveyed.

Table8.1 Details of Forest Inventories carried out between 1995 and 1997.

State/ District / Forest stratum	Area inventoried (sq.km.)		Tree Forest area (sq.km.)	Stem/ha	Total Stems (000)		Vol/ ha (cu.m)		Total Volume (000 cu.m)
Madhya Pradesh
Narsinghpur Teak- Miscellaneous-	1,294		1,141 494 494	210 217 205	23,995 10,726 13,269		55 63 49		6,305 3,117 3,188

Karnataka
Mandya Miscellaneous-	278		272 272	96 96	2,395 2,395		17 17		418 418
Kannada Dakshin Teak- Bamboo- Miscellaneous-		3,474	2,618 20 20 2,578	318 315 30 320	83,209 634 60 82,514	191 56 12 193		49,891 113 39 49,739

Maharashtra
Amravati		3,574	3,035	242	73,442	121		36,796
(i) National Park area Teak- Miscellaneous-		1,619	1,479 1,379 100	264 263 269	39,018 36,331 2,687	150 154 104		22,236 21,194 1,042
(ii) Other area Teak- Miscellaneous-		1,955	1,556 1,013 543	221 254 160	34,424 25,754 8,670	94 117 50		14,560 11,841 2,719

Contd.

Table8.1-contd.

State/ District / Forest stratum	Area inventoried (sq.km.)	Tree Forest area (sq.km.)	Stem/ha	Total Stems (000)	Vol/ ha (cu.m)	Total Volume (000 cu.m)
Andaman & Nicobar Islands
Andaman District	3,486	3,069	460	141,238	85	26,113

Evergreen- Semi Evergreen- Moist deciduous-		645 1,462 962	486 455 451	31,371 66,457 43,410	103 91 64	6,605 13,327 6,181

Forest Divisions
(I) Little Andaman	276	142	450	6,382	118	1,672
(ii) Middle Andaman	502	470	470	22,084	80	3,754
(iii) South Andaman	616	520	460	23,962	98	5,101
(iv) Mayabander	845	797	453	36,061	75	5,971
(v) Diglipur	723	665	530	35,250	78	5,180
(vi) Baratung	524	475	368	17,499	93	4,435

Arunachal Pradesh
East Siang District (a)Reserve forest Altitudinal Range (I) 1-900m (ii) 901-1800 m (b) Unclassed forest Altitudinal range (I) 1- 900 m (ii) 901-1800 m	5,123	5,123 1,050 90 2,611 1,341	138 168 278 87 209	70,896 17,683 2,516 22,664 28,032	105 140 208 64 151	53,861 14,752 1,884 16,850 20,374

A8.2 NON - FOREST AREA

From 1991-92 FSI took up inventory of trees growing outside conventional forest areas of the country. The main objective of the inventory is to assess the extent of plantations raised under various social forestry schemes by different agencies. The sampling design, field formats, data processing methodologyhave been developed at the FSI.

A.Sampling Design: The sampling design adopted for this inventory is a two stage stratified sampling. Sampling unit in the first stage is a district and in the second stage is a village. While taking up the survey of a state, optimum number of villages to be surveyed are determined on the basis of data obtained from a pilot survey. The number of villages to be inventoried in a district is decided according to proportional allocation. Trees standing in the selected villages are enumerated and measured by the field parties. Compilation and data processing is done district-wise.

Planted trees are classified in eight categories: Farm forestry, Village woodlot, Block plantation, Road, Pond, Rail, Canal side plantations and others.

3.Terminology

Block plantation - Compact tree plantations covering an area of more than 0.1 ha on private/Govt. land except village community land.

Farm Forestry- Trees growing naturally or planted along farm bunds or in small patches upto 0.1 ha on private lands.

Village woodlot- Naturally growing/planted trees on village community land.

The inventory of the non-forest area of Haryana state has been completed in 1997. The results have been analysed and presented in Table 8.2 and Table 8.3 and anlysis is given in A8.4

Table8.2 Total number of trees, total volume and its distribution by categories and species in Haryana.

	Non-forest Area (sq.km.)		Estimated No. of trees (000)	Tree/ha	Estimated Vol (000 cu m.)		Vol/ha (cu. m.)
Haryana		43,596	54,984	12.61	10,328		2.36
Category of trees		Per cent of volume		Species		Per cent of volume
Farm Forestry		41		Acacia nilotica		22
Village woodlot		23		Eucalyptus spp.		21
Roadside plantation		13		Dalbergia sissoo		12
Block Plantation		11		Prosopis cineraria		15
Canalside plantation		9		Salvadora spp.		3
Others		3		Populus spp.		2
				Acacia tortilis		2
				Azadirachta indica		2
				Mangifera indica		2
				Others		19

Table8.3 Districtwise Total number of trees, total volume and its distribution by categories and species.

District	Non-forest area (sq.km.)		Estimated No.of trees (000)		Tree/ha		Estimated Vol (000 cu.m.)			Vol/ha (cu. m.)
Ambala		3,739	8,864		25.12		1,496			4.0
Category of trees		Per cent of volume			Species			Per cent of volume
Farm forestry		45			Eucalyptus spp.			50
Roadside plantation		22			Acacia nilotica			12
Block plantation		22			Dalbergia sissoo			10
Village woodlot		7			Populus spp.			7
Others		3			Mangifera indica			6
					Others			15

Bhiwani		5,048	6,927		13.72		1,416			2.805
Category of trees		Per cent of volume			Species			Per cent of volume
Village woodlot		65			Prosopis cineraria			53
Farm forestry		16			Acacia nilotica			14
Block plantation		6			Acacia tortilis			8
Canalside plantation		7			Salvadora spp.			7
Others		6			Others			18

Faridabad		1,957		1,865	9.54	310			1.59
Category of trees		Per cent of volume			Species			Per cent of volume
Farm forestry		69			Acacia nilotica			16
Block plantation		7			Eucalyptus spp.			21
Roadside plantation		12			Dalbergia sissoo			19
Canalside plantation		3			Azadirachta indica			11
Others		9			Others			33

Gurgaon		2,706	1,766		6.53	266			0.98
Category of trees		Per cent of volume			Species			Per cent of volume
Farm forestry		76			Acacia nilotica			20
Village woodlot		10			Eucalyptus spp.			20
Roadside plantation		8			Azadirachta indica			13
Block plantation		5			Prosopis juliflora			13
Others		1			Dalbergia sissoo			9
					Others			25

Contd.

Table8.3-contd.

District	Non-forest Area (sq.km.)			Estimated No. of trees (000)			Tree/ha					Estimated Vol (000 cu m.)				Vol/ha (cu. m.)
Hissar		6,235				5,082	8.15				1,131					1.81
Category of trees		Per cent of volume					Species						Per cent of volume
Farm forestry		54					Acacia nilotica						28
Canals		21					Dalbergia sissoo						27
Village woodlot		11					Eucalyptus spp.						20
Block plantation		5					Prosopis cineraria						5
Others		9					Others						30

Jind			3,271		3,490				10.67	698					2.134
Category of trees			Per cent of volume					Species						Per cent of volume
Farm Forestry			51					Acacia nilotica						34
Block Plantation			15					Eucalyptus spp.						21
Roadside plantation			13					Dalbergia sissoo						16
Village woodlot			9					Morus spp.						4
Others			12					Others						25

Karnal			3,698		4,647				12.56	786					2.13
Category of trees			Per cent of volume					Species						Per cent of volume
Farm forestry			52					Eucalyptus spp.						32
Block plantation			11					Acacia nilotica						29
Canalside plantation			16					Dalbergia sissoo						7
Roadside plantation			15					Populus						6
Others			6					Mangifera indica						6
								Others						20

Kurukshetra			3,740		4,465				11.98	852					2.28
Category of trees			Per cent of volume					Species						Per cent of volume
Farm forestry			51					Eucalyptus spp.						36
Roadside plantation			17					Acacia nilotica						25
Block plantation			15					Dalbergia sissoo						7
Village woodlot			9					Populus spp.						9
Others			9					Mangifera indica						3
								Others						20

Contd(2)

Table8.3-contd(2).

District	Non-forest Area (sq.km.)		Estimated No. of trees (000)	Tree/ha	Estimated Vol (000 cu m.)			Vol/ha (cu. m.)
Mahendragarh		2,928	5,768	19.70	1,071				3.66
Category of trees		Per cent of volume		Species			Per cent of volume
Village woodlot		43		Prosopis cineraria			44
Farm forestry		18		Acacia nilotica			16
Block plantation		19		Salvadora spp.			15
Roadside plantation		6		Acacia tortilis			7
Others		1		Others			18

Rohtak		3,839	4,796	12.67	892				2.324
Category of trees		Per cent of volume		Species		Per cent of volume
Farm Forestry		43		Acacia nilotica		27
Roadside plantation		18		Eucalyptus spp.		21
Village woodlot		19		Dalbergia sissoo		17
Block Plantation		6		Prosopis cineraria		11
Canalside plantation		13		Prosopis juliflora		2
Others		1		Others		22

Sirsa		4,241	3,677	8.68	881				2.08
Category of trees		Per cent of volume		Species		Per cent of volume
Farm forestry		33		Acacia nilotica		31
Roadside plantation		16		Dalbergia sissoo		19
Village woodlot		21		Prosopis cineraria		16
Block plantation		6		Eucalyptus spp.		13
Canalside plantation		22		Zizyphus spp.		8
Others		1		Others		13

Sonipat		2,194	3,122	14.23	529				2.41
Category of trees		Per cent of volume		Species		Per cent of volume
Farm forestry		66		Eucalyptus spp.		22
Block plantation		13		Acacia nilotica		18
Canalside plantation		13		Dalbergia sissoo		15
Village woodlot		5		Morus spp.		8
Others		3		Prosopis juliflora		8
				Others		29

A8.4 Analysis

The tables reveal that farm forestry contributes about 41% of the total standing volume of wood in non-forest areas in Haryana, followed by village woodlot (23%), Roadside plantation (13%) and Block plantations (11%). This distribution is presented in Figure 8.2. Among the districts the contribution of volume from farm forestry varies from 76% in Gurgaon to 16% in Bhiwani. This contribution is more than 50% in the districts of Jind, Bhiwani, Hissar, Faridabad, Kurukshetra, Sonipat and Karnal. Further the volume from village woodlot is maximum in Bhiwani (65%) followed by Mahendragarh (43%). In the category of Block plantation Ambala has the maximum (22%) of the total volume followed by Mahendragarh (19%) .

Among the species Acacia nilotica contributes maximum volume (22%) followed by Eucalyptus (21%), Prosopis cineraria (15%), Dalbergia sissoo (12%), Salvadora spp. (3%) and others (19%) as depicted in Figure 8.3. The maximum contribution to the total volume is by A.nilotica in Jind (34%), by Eucalyptus spp. in Ambala (50%), by P.cineraria in Bhiwani (13%) and by Dalbergia sissoo in Hissar (27%).

The total standing volume of wood growing in the non-forest area of Haryana is estimated to be 10.30 million cu.m. whereas in the natural forest areas it is estimated to be 1.41 million cu.m. Though the natural forest area constituting only 1.4% of the geographic area is not comparable to the non-forest area, yet standing volume of wood outside natural forest is 7 times more thereby indicating that the plantation programmes have made a major impact.