干旱区生态环境知识资源中心(Arid): 西部煤炭资源地下开采对不同坡位柠条光合系统损伤特征分析

Arid

	西部煤炭资源地下开采对不同坡位柠条光合系统损伤特征分析
其他题名	Damage Characteristics of Caragana korshinskii Microphylla Photosynthetic System at Different Slope Positions in the Underground Coal Mining of Western China
	王丽 1; 雷少刚 2; 卞正富 2
来源期刊	西北植物学报
ISSN	1000-4025
出版年	2018
卷号	38 期号:2 页码:332-342
中文摘要	以神东采煤沉陷区不同坡位(坡上、坡中、坡下)的柠条植株为目标植物,应用叶绿素荧光诱导动力学及分析技术(JIP-test),比较分析沉陷后1~2年不同坡位柠条叶绿素荧光参数的变化特征,探索不同坡位柠条PSⅡ (光系统Ⅱ)损伤及适应机制的空间差异性,为矿区植被恢复与重建提供理论指导.结果显示:(1)坡上和坡下柠条叶片J点相对可变荧光(V_j)和Q_A的初始还原速度(M_o)明显增加,同时单位反应中心吸收的光能(ABS/RC)、捕获的光能(TR_o/RC)和单位面积热耗散的能量(DI_o/CS_o)增大,最大光化学效率(F_v/F_m)和以吸收光能为基础的性能指数(PI_(ABS))大幅减少,K相可变荧光占J的比例在沉陷1年最大,增幅达74.54%,沉陷2年后逐渐接近对照值.(2)坡中柠条叶片V_j和M_o先增加后减少,ABS/RC、TR_o/RC明显减小,F_v/F_m、PI_(AB S)和变化不大.(3)冗余分析(redundancy analysis.RDA)前2个排序轴共同解释了荧光参数-环境因子间关系的82.98%,其中土壤水和速效磷与第一轴的相关系数分别为0.57和0.50.研究表明:采煤塌陷后坡上和坡下柠条叶片PSⅡ受损严重,反应中心通过耗散过剩的激发能减轻伤害;坡中柠条受PSⅡ采煤塌陷影响较小,反应中心通过可逆性失活进行自我保护;土壤水和速效磷含量是采煤沉陷区制约柠条PSⅡ光合生理的关键环境因子.
英文摘要	Using chlorophyll fluorescence induction kinetics and analysis technique (JIP-test),the study analyzed the damage status of plants and the photosynthetic response of plants to stress. The result is very important to vegetation restoration and reconstruction in mining area. Taken Caragana korshinskii as the target plant, which live in Shendong Mining subsidence area of different slope positions (upslope, mesoslope and downslope). The study compared the differences in chlorophyll fluorescence parameters from 1 to 2 years after coal ming subsidence. In this paper, it has explored that the degree of damage and adaptability mechanism of different slope positions in coal mining subsidence. The results show that: (1) on upslope and downslope, V_j and M_o of C. korshinskii leaves increased significantly; at the same time, ABS/ RC,TR_o/RC and DI_o/CS_o increased,while F_v/F_m and PI_(ABS) decreased greatly; after 1 years of subsidence, the maximum increase of Wk value reached 74.54 %, and it was close to the control value after 2 years of subsidence. (2) On mesoslope,V_j and M_o of C. korshinskii increased first and then decreased, while ABS/RC and TR_o/RC decreased significantly, F_v/F_m, PI_(AB S) and W_k changed little. (3) The first two axes of redundancy analysis effectively explained 52% of Fluorescence-environmental variation. The correlation coefficients of soil water and available phosphorus with the first axis were 0.57 and 0.5,respectively. It suggest that the photosynthetic system II (PS II ) of Caragana was severely damaged in the upper and lower slopes,and the reaction center reduced damage by dissipating excess excitation energy; the PS II of Caragana in middle slope was less affected by coal mining, and the reaction center protected itself by reversible inactivation; soil water, available phosphorus and available potassium are the key environmental factors that affecting the PS II of Caragana in the coal mining subsidence area.
中文关键词	半干旱区 ; 地下开采 ; 柠条 ; 叶绿素荧光 ; 光合系统损伤
英文关键词	Semi-arid area underground mining Caragana korshinskii chlorophyll fluorescence damage of photosynthetic system
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6203247
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238487
作者单位	1.(徐州)中国矿业大学环境与测绘学院;;滁州学院地理信息与旅游学院, ;;, 徐州;;滁州, 江苏;;安徽 221116;;239000, 中国; 2.(徐州)中国矿业大学环境与测绘学院, 徐州, 江苏 221116, 中国
推荐引用方式 GB/T 7714	王丽,雷少刚,卞正富. 西部煤炭资源地下开采对不同坡位柠条光合系统损伤特征分析[J],2018,38(2):332-342.
APA	王丽,雷少刚,&卞正富.(2018).西部煤炭资源地下开采对不同坡位柠条光合系统损伤特征分析.西北植物学报,38(2),332-342.
MLA	王丽,et al."西部煤炭资源地下开采对不同坡位柠条光合系统损伤特征分析".西北植物学报 38.2(2018):332-342.