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Warren, W. D. M.
- A Formula for Discovering if the Selection Forest is Sufficiently Mature for Conversion to Uniform Forest
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Indian Forester, Vol 60, No 8 (1934), Pagination: 559-560Abstract
No abstract
- Seedling Versus Root and Shoot Cuttings
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Indian Forester, Vol 61, No 7 (1935), Pagination: 466-466Abstract
No abstract- Possibilites from Irrigation of Dry Type Hill Forests
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Indian Forester, Vol 61, No 8 (1935), Pagination: 512-520Abstract
No abstract- Effect of Forests on Erosion, Floods, Climate and Rainfall, and on Irrigation Experiments
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Indian Forester, Vol 62, No 7 (1936), Pagination: 415-417Abstract
No abstract- The Bihar and Orissa Forest Stall at the Patna Provincial Exhibition, 1936
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Indian Forester, Vol 62, No 7 (1936), Pagination: 418-422Abstract
No abstract- Thinnings
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Indian Forester, Vol 62, No 12 (1936), Pagination: 744-746Abstract
No abstract- Sal Regeneration De Novo
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Indian Forester, Vol 66, No 6 (1940), Pagination: 335-340Abstract
No abstract- The Influence of Forests on Climate
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Indian Forester, Vol 67, No 6 (1941), Pagination: 293-301Abstract
The influence of forests on the local (micro) climate has been scientifically proved from ground meteorological data. Certain indisputable climatic Laws have been enunciated explaining why this happens. Deductions from upper air observations are liable to serious error, and cannot upset these facts. More research is required to prove how far the climatic influence extends beyond the forest edge.- Contour Trenching Vs. Irrigated Plantations De Novo De Novo
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Indian Forester, Vol 68, No 3 (1942), Pagination: 134-138Abstract
The amount of runoff water, which can be held up for the benefit of a forest crop is only limited by the size of the contour trenches, the intensity of the rainfall, and its annual total. In regions of fair rainfall, the extra amount which can thus be held up, is much greater than the amount ordinarily available for irrigated plantations in arid regions, owing to severe competition with agricultural crops. In these circumstances and also owing to their more favourable environment, contour trenched forests are likely to be, on the average, more luxuriant and more efficient as focal points for moisture condensation.- Contour Trenching (Replies to Critics)
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Indian Forester, Vol 68, No 6 (1942), Pagination: 300-304Abstract
No abstract- Studies in Climatic Change-II
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Indian Forester, Vol 68, No 9 (1942), Pagination: 472-479Abstract
No abstract- Soil Erosion Control in Bihar
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Indian Forester, Vol 69, No 11 (1943), Pagination: 432-434Abstract
No abstract- Note on the Above
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Indian Forester, Vol 70, No 3 (1944), Pagination: 85-85Abstract
No abstract- Thinnings in the Singhbhum Forests
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Indian Forester, Vol 70, No 11 (1944), Pagination: 372-375Abstract
Thinnings were introduced in the year 1936 in these 800 square miles of forest both in the young ten-year-old. P.B.I. and VI crops, and in the older uneven-aged selection forests of the other periodic blocks. In the young crops thinnings are mechanical with the aid of a thinning stick, the aim being to thin the crops to an average spacing, the multiple of which will give the ideal ultimate spacing of the crop at the final felling. Uneven-aged crops are given "C" grade thinninga with a formula showing the relationship between diameter of stems and their spadng, as guide (18 times)."C" grade thinnings are favoured as against crown thinnings as being simpler to execute and to inspect. Fire hazard and measures of protection are discussed.- Contour Trenching
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Indian Forester, Vol 72, No 12 (1946), Pagination: 581-584Abstract
No abstract- A Study of Climate and Forests in the Ranchi Plateau (Changes Over the Period: 1889-1943) Part-1
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Indian Forester, Vol 100, No 4 (1974), Pagination: 229-234Abstract
Statistical analysis shows that the climate of Ranchi is now (1944) warmer by day in the hot weather months or Mey(0.8°F), and June (2.3°F), June nearly significant and less so by night, (June: 0.5°F, not significant. The air, remains drier from January till June, calmissing a decrease of relative humidity by 5.8 points in June, which is significant. With reduced rainfall from March till June, the drop of 0.96' in May is significant and of 1.66' in June nearly so, and with less rainy days from March till June, the drop of (1.8 days in May is highly significant though June's 1.7 drop is not yet significant in the Monsoon the rainfall is heavier than formerly, the 3.65' excess in July being highly significant and the 2.145' excess of August being just significant. The number of rainy days is greater, the 2.3 excess of July being highly significant. Day temperatures are significant cooler in July and August (0.7°F and 0.5°F respectively and night retemperatures are significantly cooler from July till December. In the cold weather, days are cooler and drier with more rainfall; but these changes are not significant. The same pattern of climatic change is noticed is the Stations of Tamor and Kurdeg, sitnated closer to the disforested areas but more accentuated. In the hot weather rainfall losses(as might be expected) are greater, being 4.36 inches in May, highly significant, and 2.99 inches in June significant (c.f. Ranchi's 1.66 inches). Tamor's shortfall of 2.1 rainy days in June is also significant. In the monsoon, the excess rainfall of 2.88' for July is nearly significant while the four rainy days average excess of that month is highly significant. So also is Kurdeg's 3.8 excess rainy days of that month. In the cold weather Kurdeg's 1.59' excess in October is significant and its 2.3 excess rainy days highly significant, while Tamor's 0.9 excess rainy days of November is also significant; Ranchi further away from the forest showed on significant changes In these months. Seven other stations five on the plateau and two near it, are analysed but not tested for statistical ,significance, The annual rainfall average bas gone up in seven out of the tea stations examined, by 0.89' (Tamar) to a maximum of 8.27' (Chainpur) and has gone down in three stations by 0.42' (Kurdeg) to 2.99' (Khunti). They show the same general pattern of climatic change and point to the facts of rainfall losses in June and gains in July, greater nearer to the disforested areas than away from them. The geatest recorded loss is 5.62' at Khunti in June and the greatest gain 7.02 inches at Chainpur in July. The above changes 10 climate could have been due to (a) changes in vegetative cover or (b) weaker indraughts of moisture laden winds from the coast, or to a combination of both. In fact, the indraughts of moisture as measured by the rainfall at the Coastal Control Station were, if anything, slightly stronger than normal, in the critical pre-and early monsoon month of May and June. Thus, the desiccation in these months appears to have been brought about by the disapparance of forest or cutting back to scrub over extensive areas 24-38 miles east baa vollageand south of Ranchi, (156 square miles) and 68-100 miles away in the south west of the plateau (751 square miles). The same pattern of adverse climatic change is found in neighbouring; areas of Bihar, Chota Nagpur and Orissa, where also the change is greatest near the disforested areas.- A Study of Climate and Forests in the Ranchi Plateau Part II
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