干旱区生态环境知识资源中心(Arid): 一种石漠区地表岩石裸露率测量方法

Arid

	一种石漠区地表岩石裸露率测量方法
其他题名	Method to Measure Surface Rock Ratio in rRocky Desertification Areas
	刘娟 1; 沈有信 2; 赵志猛 1; 赵高卷 1
来源期刊	山地学报
ISSN	1008-2786
出版年	2018
卷号	36 期号:6 页码:973-980
中文摘要	岩石裸露率是判定喀斯特石漠化等级最基础指标之一,其精度对判定石漠化分布区、划分等级、制订防治措施十分重要。传统机械布点法测量内容单一,无法满足日益严峻的石漠化治理需求。针对这一问题,本实验设计在小尺度不同粒径岩石裸露条件下,应用照片处理技术(拍照)获取岩石裸露率并分类径级的方法,并与传统机械布点测量方法进行比对。结果发现:拍照测量得到的岩石裸露率低于机械布点测量值,在拍照测量结果未达到石漠化(岩石裸露率< 30%)时两种方法之间的差异显著,超过此比例后两种测量结果的差异随着岩石裸露率的增加而逐渐减小;拍照测量岩石裸露率变异系数高于机械布点测量结果,说明拍照方法更能反映喀斯特石漠化岩石高异质性特性;拍照测得石漠化区和治理区的岩石分布密度分别为111个/m~2和67.4个/m~2, 两个样地岩石优势粒径均为75 ~ 250 mm,但综合来看,治理区样地的岩石粒径尺寸要高于石漠化区。机械布点测量简单、快捷,但数据内容单一,拍照测量不仅可以反映岩石裸露率,还可同时测量岩石粒径和分布密度,敏感度较机械布点测量高,能反映喀斯特石漠化地区更多的细节和变异,能更好地服务于石漠化治理。
英文摘要	The rock ratio is one of the fundamental criteria in the classification of rocky desertification,and its accuracy is important to identify,classify,and determine anti-desertification treatments in rocky desertification areas. The traditional mechanical dot surveying method (TDM), which provides only a single datum for the rock ratio,is unable to meet the increasing demand in rock desertification studies and practices in karst areas. Accordingly,a digital photographing method (DPM) was employed to determine the rock ratio and rock sizes in a rocky desertification area and in an anti-desertification treatment area in this study,and the results were compared to those with the TDM. They showed that the rock ratio of DPM was lower than was that of TDM. The difference in the rock ratio between the two methods was significant when the DPM ratio was < 30%. When the DPM ratio was > 30%,the difference between the two methods decreased with a increase in the DPM ratio. The DPM coefficient of variation of the rock ratio was higher than was that of TDM,indicating DPM’s greater sensitivity to the rock distribution heterogeneity in karst areas. The rock density DPM determined was 111 /m~2 and 67.4 /m~2 in the rocky desertification area and the anti-desertification treatment area,respectively. The dominant rocks were 75 ~ 250 mm in size in both sites,and there was a trend in which the rocks in the treatment area were larger than those in the desertification area. Compared with TDM,which obtains a single rock ratio datum more easily and rapidly,the DPM can collect the rock ratio,as well as the rock size and density for each size group,has greater sensitivity,and identifies more details and variation in rocks to meet the requirements for rock studies and anti-desertification treatments.
中文关键词	喀斯特 ; 石漠化 ; 岩石裸露率 ; 测量方法
英文关键词	karst rocky desertification rock ratio measurement methods
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:6406080
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238056
作者单位	1.中国科学院西双版纳热带植物园;;中国科学院大学, 中国科学院热带森林生态学重点实验室;;, 昆明;;, ;;北京 650000;;100049; 2.中国科学院西双版纳热带植物园, 中国科学院热带森林生态学重点实验室, 昆明, 云南 650000, 中国
推荐引用方式 GB/T 7714	刘娟,沈有信,赵志猛,等. 一种石漠区地表岩石裸露率测量方法[J],2018,36(6):973-980.
APA	刘娟,沈有信,赵志猛,&赵高卷.(2018).一种石漠区地表岩石裸露率测量方法.山地学报,36(6),973-980.
MLA	刘娟,et al."一种石漠区地表岩石裸露率测量方法".山地学报 36.6(2018):973-980.