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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Vegetation and climatic variability in southeastern Madhya Pradesh, India since Mid-Holocene, based on pollen records
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Vegetation and climatic variability in southeastern Madhya Pradesh, India since Mid-Holocene, based on pollen records

机译：基于花粉记录，自中全新世以来印度东南部中央邦的植被和气候变化

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摘要

Pollen analysis of 1.75 m deep sediment core from Tula-Jalda (Amarkantak) in Anuppur district, Madhya Pradesh shows that around 4500-3600 cal years BP, this region supported open mixed tropical deciduous forests comprising chiefly Madhuca indica followed by Terminalia, Mitragyna parvifolia, Haldina cordifolia, Emblica officinalis and Acacia, under a warm and relatively less humid climate. The retrieval of Cerealia and other cultural plants, viz. Artemisia, Cheno/Am and Caryophyllaceae signifies that the region was under cereal-based agricultural practice. The open mixed deciduous forests got enriched and dense around 3600-2761 cal years BP with the expansion of trees that already existed coupled with invasion of Symplocos, Diospyros, Lannea coromandelica and Radermachera with the inception of a warm and moderately humid climate in response to increased monsoon precipitation. Around 2761-2200 cal years BP, much expansion of the forests took place owing to initiation of a warm and more humid climate, attributed to intensification of the southwest monsoon. The modern Sal (Shorea robusta) forests were established around 2200 cal years BP, as clearly deciphered by the steady presence of S. robusta along with close allies such as M. indica, Terminalia, H. cordifolia, E. officinalis, etc. This change in the vegetation scenario implies that a warm and relatively more humid climate prevailed with timely arrival of the more active southwest monsoon.
机译：对中央邦安普布尔地区图拉-贾尔达（阿马尔坎塔克）1.75 m深沉积物芯的花粉分析显示，该地区大约在BP 4500-3600 cal年，支持开放混合热带落叶林，其中主要是印度Mad树，其次是Terminalia，Mitragyna parvifolia， Haldina cordifolia，Emblica officinalis和Acacia，处于温暖和相对少湿的气候下。 Cerealia和其他文化植物的采伐，即。 Artemisia，Cheno / Am和Caryophyllaceae表示该地区处于以谷物为基础的农业实践中。大约在3600-2761 cal BP左右，开阔的混合落叶森林变得茂密和茂密，已经存在的树木膨胀，加上Symplocos，Diospyros，Lannea coromandelica和Radermachera的入侵，随着气候的增加，开始出现温暖和中度潮湿的气候。季风降水。大约在BP 2761-2200年间，由于西南季风的加剧，开始出现了温暖和潮湿的气候，使森林大面积扩张。现代的萨尔（Shorearobusta）森林建立于BP大约2200 cal年，这由稳健的沙门氏菌以及紧密的盟友（如印度念珠菌，Terminalia，H。cordifolia，E。officinalis等）的稳定存在清楚地解释了。植被状况的变化意味着温暖和相对潮湿的气候盛行，西南季风更加活跃。

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