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首页> 外文期刊>International Journal of Environment >Geospatial Modeling To Assess Geomorphological Risk For Relentless Shifting Cultivation In Garo Hills Of Meghalaya, North East India
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Geospatial Modeling To Assess Geomorphological Risk For Relentless Shifting Cultivation In Garo Hills Of Meghalaya, North East India

机译：评估印度东北梅加拉亚邦加罗山无情转移栽培的地貌风险的地理空间建​​模

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摘要

Due to shifting cultivation, the overall structure and composition of ecological condition is affected, hence landscape study becomes important for maintaining ecological diversity and appropriate scientific planning of any area. Garo hills region of northeast India is suffering from Geomorphological risk like sheet erosion, landslide etc. due to the age old tradition of shifting cultivation in the fragile hill slopes aided by other anthropogenic activities. The present study was conducted to examine the role of shifting cultivation for deforestation and degradation with variant of slope and elevation to relate vegetation cover with slope and elevation in the Garo Hills landscape of Meghalaya using temporal remote sensing data of 1991, 2001 and 2010. It revealed that there is decrease in dense forest and open forest during the 1 st decade while areas under dense forest and non-forest increased in 2 nd decade. This increased forest area is confined in the high slopes, which are inaccessible. The study shows increase in shifting cultivation near-about double fold in high slope and more than a double fold in the high altitudinal area in last decade, which is negative sign in terms of Geomorphological protection. International Journal of Environment, Volume-2, Issue-1, Sep-Nov 2013, Pages 91-104 DOI: http://dx.doi.org/10.3126/ije.v2i1.9212.
机译：由于耕作方式的改变，生态条件的整体结构和组成受到影响，因此景观研究对于维持生态多样性和任何地区的适当科学规划都至关重要。印度东北部的加罗丘陵地区正遭受地貌侵蚀的威胁，例如片层侵蚀，滑坡等，这是由于在其他人为活动的辅助下，在脆弱的山坡上进行耕作转移的古老传统。本研究利用1991、2001和2010年的时间遥感数据，研究了轮作栽培对森林砍伐和退化（坡度和海拔高度的变化）在植被覆盖度与梅加拉亚邦（Meghalaya）Garo Hills景观中的坡度和海拔高度之间的关系的作用。揭示了在第一个十年中茂密的森林和开阔的森林减少，而在第二个十年中茂密的森林和非森林覆盖的面积增加。这种增加的森林面积被限制在无法进入的高坡度上。研究表明，近十年来，高坡度上的轮作栽培增加了近两倍，高海拔地区增加了两倍以上，这对地貌保护是不利的。国际环境杂志，第2卷，第1期，2013年11月11日，第91-104页DOI：http://dx.doi.org/10.3126/ije.v2i1.9212。

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