Kumar A, Jhariya M K, Yadav D K, Banerjee A
Department of Farm Forestry, Sarguja University, Ambikapur, C.G, 497001, India.
Department of Environmental Science, Sarguja University, Ambikapur, C.G, 497001, India.
Environ Monit Assess. 2017 Aug;189(8):371. doi: 10.1007/s10661-017-6086-0. Epub 2017 Jul 5.
Phytosociological study in and around reclaimed coal mine site is an essential requirement for judging restoration impact on a disturbed site. Various studies have been aimed towards assessing the impact of different restoration practices on coal mine wastelands. Plantation scheme in a scientific way is the most suitable approach in this context. During the present investigation, an effort have been made to assess the vegetation dynamics through structure, composition, diversity, and forest floor biomass analysis in and around Bishrampur collieries, Sarguja division, northern Chhattisgarh, India. We have tried to develop strategies for eco-restoration and habitat management of the concerned study sites. Four sites were randomly selected in different directions of the study area. We classified the vegetation community of the study sites into various strata on the basis of height. Two hundred forty quadrats were laid down in various directions of the study area to quantify vegetation under different strata. During our investigation, we found eight different tree species representing four families in the different study sites. The density of the various tree species ranged between 40 and 160 individuals ha. The density of sapling, seedling, shrub, and herb ranged between 740 and 1620; 2000 and 6000; 1200 and 2000; and 484,000 and 612,000 individuals ha, respectively, in different directions. The diversity indices of the tree reflected highest Shannon index value of 1.91. Simpsons index ranged between 0.28 and 0.50, species richness ranged between 0.27 and 0.61, equitability up to 1.44, and Beta diversity ranged between 2.00 and 4.00. Total forest floor biomass ranged between 4.20 and 5.65 t/ha among the study sites. Highest forest floor biomass occurred in the south direction and lowest at east direction. Total forest floor biomass declined by 6.19% in west, 13.10% in north, and 25.66% in east direction, respectively. The mining activities resulted significant damage to natural vegetation and its dynamics. The study indicated that Acacia mangium, Cassia siamea, and Dalbergia sissoo can be recommended for effective eco-restoration of the concerned sites due to cosmopolitan distribution, high regeneration potential, as well as existence in the form of various girth classes with stable population structure.
对复垦煤矿场地及其周边进行植物社会学研究,是判断对受干扰场地恢复影响的一项基本要求。各种研究旨在评估不同恢复措施对煤矿废弃地的影响。在这种情况下,科学的种植方案是最合适的方法。在本次调查中,我们通过对印度恰蒂斯加尔邦北部萨尔古贾分区比什兰布尔煤矿及其周边地区的植被结构、组成、多样性和林地生物量进行分析,来评估植被动态。我们试图制定相关研究场地的生态恢复和栖息地管理策略。在研究区域的不同方向随机选择了四个场地。我们根据高度将研究场地的植被群落划分为不同层次。在研究区域的不同方向设置了240个样方,以量化不同层次下的植被情况。在调查过程中,我们在不同研究场地发现了代表四个科的八种不同树种。不同树种的密度在每公顷40至160株之间。在不同方向上,幼树、幼苗、灌木和草本植物的密度分别在每公顷740至1620株、2000至6000株、1200至2000株以及484,000至612,000株之间。树木的多样性指数显示,香农指数最高值为1.91。辛普森指数在0.28至0.50之间,物种丰富度在0.27至0.61之间,均匀度高达1.44,贝塔多样性在2.00至4.00之间。研究场地之间的林地总生物量在每公顷4.20至5.65吨之间。林地生物量最高出现在南部方向,最低在东部方向。林地总生物量在西部下降了6.19%,在北部下降了13.10%,在东部下降了25.66%。采矿活动对自然植被及其动态造成了重大破坏。研究表明,由于马占相思、暹罗决明和印度黄檀具有广泛的分布、较高的再生潜力,以及以各种胸径等级存在且种群结构稳定,因此可推荐用于相关场地的有效生态恢复。