干旱区生态环境知识资源中心(Arid): 喀斯特生态环境治理下土壤保持功能对石漠化的响应机制

Arid

	喀斯特生态环境治理下土壤保持功能对石漠化的响应机制
其他题名	Response Mechanism of Soil Conservation Function to Rocky Desertification Under Eco-Environmental Harness of Karst Areas
	陈丽莎; 熊康宁; 陈起伟; 舒田; 吴俊
来源期刊	长江流域资源与环境
ISSN	1004-8227
出版年	2020
卷号	29 期号:2 页码:499-510
中文摘要	喀斯特地区土壤保持功能是衡量石漠化生态治理成效的重要手段之一,基于InVEST模型,利用 3S技术对2005、2010、2015年的关岭-贞丰花江示范区的石漠化进行解译,研究石漠化与土壤保持量两者的响应机制。结果表明:(1)2005 ~ 2015年石漠化程度总体减缓,面积由3 773.56 hm~2减少至3 474.23 hm~2,土壤保持总量相继上升,从29.29万t提高至37.29万t,2005 ~ 2010年单位面积土壤保持增量集中在6 ~ 30 t·hm~(-2)·a~(-1),后五年增量在0 ~ 6 t·hm~(-2)·a~(-1)。(2)由于土地利用方式、坡度、土层厚度等差异,土壤保持功能并未呈现简单式下降,而是表现为强度>中度、轻度>潜在、非喀斯特>无石漠化。其中轻度与潜在差值最大,可达5.53 t·hm~(-2)·a~(-1),说明了潜在石漠化是今后治理的重点。(3)2005 ~ 2010年石漠化恢复型土壤保持增量为10.27 t·hm~(-2)·a~(-1),由于土地利用方式的转变以及治理时效性在2010 ~ 2015年降低为3.01 t·hm~(-2)·a~(-1)。稳定型石漠化变化土壤保持变化最为平稳,强度石漠化减缓区土壤保持功能上升快,轻度最为平缓,表明了治理期长且需循序渐进。因而,在治理过程中需考虑不同等级石漠化具有的土壤保持功能特性及其恢复的时效性。
英文摘要	Soil conservation function is one of the important means of measuring the effectieness of ecological rehabilitation of rocky desertification in karst areas.Based on InVEST model,3Stechnology was used for interpreting rocky desertification in Guanling-Zhenfeng Huajiang Demonstration Area in 2005,2010 and 2015,and the response mechanism between rocky desertification and soil conservation was studied.The results showed that,from 2005 to 2015,(1)Degree of rocky desertification in the Huajiang demonstration area presented an overall downward trend,and areas of rocky desertification was reducing from 3 773.56 to 3 474.23 hm~2.Moreover,the overall soil conservation quantities presented an upward trend,rising from 279 900 to 348 100 t.the increasing quantities of soil conservation per unit area,from 2005 to 2010,was concentrated in 6-30 t·hm~(-2)·a~(-1),and in the last five years it slowed within 0-6 t·hm~(-2)·a~(-1).(2)although differences in land-use type,slopes,and soil thickness,soil conservation functions did not show a simple decline at all,but rather:intensity > moderate,mild > potential,non-karst > no rock desertification.Among them,the difference between light and potential is biggest difference up to 5.53 t·hm~(-2)·a~(-1),which indicated that potential rocky desertification is the harness priority in the future.(3)In 2005-2010,the increasing quantities of restoring-type soil conservation of rocky desertification was 10.27 t·hm~(-2)·a~(-1),which was reduced to 3.01 t·hm~(-2)·a~(-1) in 2010-2015 due to the change of land-use type and harness effectiveness.The change of the increasing quantities of stable type soil conservation of rocky desertification maintain the most stable;soil conservation function rises rapidly in intensityrocky desertification slowdown areas,while mild-rocky desertification area is smoothest,which indicated that the harness period is long and needs to be gradual.Therefore,in the process of harness,it is necessary to consider the soil conservation function of different degree of rocky desertification and the effectiveness of its restoration.
中文关键词	喀斯特石漠化 ; 土壤保持 ; 时空演变 ; 响应
英文关键词	rocky desertification soil conservation spatial and temporal distribution response
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Geography
CSCD记录号	CSCD:6718755
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353988
作者单位	陈丽莎, 贵州师范大学喀斯特研究院, 国家喀斯特石漠化防治工程技术研究中心, 贵阳, 贵州 550001, 中国. 熊康宁, 贵州师范大学喀斯特研究院, 国家喀斯特石漠化防治工程技术研究中心, 贵阳, 贵州 550001, 中国. 陈起伟, 贵州师范大学喀斯特研究院, 国家喀斯特石漠化防治工程技术研究中心, 贵阳, 贵州 550001, 中国. 舒田, 贵州师范大学喀斯特研究院, 国家喀斯特石漠化防治工程技术研究中心, 贵阳, 贵州 550001, 中国. 吴俊, 贵州师范大学喀斯特研究院, 国家喀斯特石漠化防治工程技术研究中心, 贵阳, 贵州 550001, 中国.
推荐引用方式 GB/T 7714	陈丽莎,熊康宁,陈起伟,等. 喀斯特生态环境治理下土壤保持功能对石漠化的响应机制[J],2020,29(2):499-510.
APA	陈丽莎,熊康宁,陈起伟,舒田,&吴俊.(2020).喀斯特生态环境治理下土壤保持功能对石漠化的响应机制.长江流域资源与环境,29(2),499-510.
MLA	陈丽莎,et al."喀斯特生态环境治理下土壤保持功能对石漠化的响应机制".长江流域资源与环境 29.2(2020):499-510.