干旱区生态环境知识资源中心(Arid): 农作物生长对岩溶生态环境的影响

Arid

	农作物生长对岩溶生态环境的影响
其他题名	Effect of crop on the karst environment
	赵瑞一; 刘子琦; 蒋建建; 吕现福; 段逸凡
来源期刊	广东农业科学
ISSN	1004-874X
出版年	2013
卷号	40 期号:1 页码:158-160
中文摘要	贵州省安顺市西秀区本寨洞与石将军洞距离较近,但两个洞穴表层环境差异较大。本寨洞表层有农作物生长,植被状况较好;而石将军洞植被遭到破坏,属于强度石漠化。2011年4月采集本寨洞和石将军洞两个洞穴的洞穴滴水,并测试洞穴滴水中的Ca~(2+)浓度及delta~(13)C_(DIC)值。测试结果表明,本寨洞洞穴滴水的电导率和Ca~(2+)浓度高于石将军洞,说明农作物通过根部呼吸作用向土壤中释放CO_2,导致渗流水对CaCO_3的溶蚀量增加,岩溶作用加强。本寨洞的洞穴滴水delta~(13)C_(DIC)值偏轻于石将军洞,说明导致本寨洞岩溶作用增强的CO_2主要来自于地表农作物。恢复石漠化地区的植被覆盖对改善岩溶地区生态环境有重要意义。
英文摘要	Although the distance between Benzhai cave and Shijiangjun cave in Xixiu district Anshun city, Guizhou province was not long, there were some huge diffierence about the epi-environment for the two caves, the surface with the crops growth and the cover was good in Benzhai cave, on the contrary the plant in Shijiangjun cave was damaged seriously, belonged to the serious desertification area. The cave drop water was collected from the Benzhai cave and the Shijiangjun cave. At the same time, the Ca~(2+) density and the delta~(13)C_(DIC) of drop water in these caves were tested. The results showed that the conductivity and Ca~(2+) density of cave dripping in Benzhai cave was higher than that in Shijiangjun cave which explained that the crops released carbon dioxide through the root respiration to soil, made seepage water dissoluted more CaCO_3 and strengthed the Karst dynamic. The delta~(13)C_(DIC) of cave dripping in Benzhai cave was partial negative compared with the Shijiangjun cave which meant that the carbon dioxide strengthed the Karst dynamic mainly came from surface crops. So to recover the vegetation coverage in rocky desertification area had important significance to improve karst area ecological environment.
中文关键词	农作物 ; 石漠化 ; 洞穴滴水 ; 碳同位素
英文关键词	crops stony desertification cave drop water carbon isotope
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4790895
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229731
作者单位	西南大学地理科学学院, 重庆 400715, 中国
推荐引用方式 GB/T 7714	赵瑞一,刘子琦,蒋建建,等. 农作物生长对岩溶生态环境的影响[J],2013,40(1):158-160.
APA	赵瑞一,刘子琦,蒋建建,吕现福,&段逸凡.(2013).农作物生长对岩溶生态环境的影响.广东农业科学,40(1),158-160.
MLA	赵瑞一,et al."农作物生长对岩溶生态环境的影响".广东农业科学 40.1(2013):158-160.