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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Mid-Holocene vegetation vis-a-vis climate change in southwestern Madhya Pradesh, India.
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Mid-Holocene vegetation vis-a-vis climate change in southwestern Madhya Pradesh, India.

机译：印度中央邦西南部中全新世植被与气候变化的关系

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摘要

Pollen analysis of a 1.75 m deep sediment core from Amjhera Swamp, Hoshangabad district shows that between 6000 and 5409 years BP, this region of southwestern Madhya Pradesh supported open mixed deciduous forests comprising Lannea coromandelica, Terminalia, Madhuca indica, Grewia, Schleichera oleosa, Syzygium, etc. under a warm and relatively less humid climate compared to today due to reduced monsoon precipitation. Between 5409 and 4011 years BP, the open mixed deciduous forests transformed into dense diversified mixed moist deciduous forests as a result of expansion of existing moist elements and better representation of Aegle marmelos and Emblica officinalis in response to initiation of a warm and relatively more humid climate, attributable to increased monsoon precipitation. Partially this phase of favourable climate coincides with the Period of Climatic Optimum. Around 4011 to 2178 years BP, the mixed moist deciduous forests became sparse and less varied owing to the onset of a warm and relatively less humid climate on account of weakening of monsoon. This is evidenced from the abrupt reduction in the prominent forest elements, viz. M. indica, Terminalia, Grewia, S. oleosa, etc. Since 2178 years BP to the Present, dense mixed moist deciduous forests got established again, which is manifested by the spurt in M. indica, Terminalia, Grewia, S. oleosa, Syzygium, Haldina cordifolia, etc. reflecting a warm and relatively more humid climate and arrival of the more active southwest monsoon.
机译：对Hoshangabad区Amjhera沼泽的1.75 m深沉积物岩心的花粉分析表明，在BP西南部6000至5409年间，中央邦西南部的这一地区支持开放混交落叶林，包括Lannea coromandelica，Terminalia，Madhuca indica，Grewia，Schleichera oleosa，Syzygium由于季风降水减少，与今天相比，在温暖和相对少湿的气候下等。在BP的5409年至4011年之间，由于温暖和相对潮湿的气候开始，由于现有水分元素的扩展以及Aegle marmelos和Emblica officinalis的更好表现，开阔的混交落叶林转变为密集的多元化混交落叶林。 ，归因于季风降水增加。此有利气候阶段部分与气候最佳时期相吻合。大约在BP 4011至2178年之间，由于季风减弱，温暖潮湿的气候相对较少，使得混合湿润的落叶林变得稀疏且变化少。这可以从主要森林元素的突然减少中得到证明。自2178年BP到现在，又重新建立了茂密的湿润落叶林，这体现在印度M，Terminalia，Grewia，S。oleosa等。印度by，Terminalia，Grewia，S。oleosa，蒲桃（Syzygium），冬虫草（Haldina cordifolia）等反映了温暖和相对更湿润的气候以及更活跃的西南季风的到来。

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