亚热带水土保持
亞熱帶水土保持
아열대수토보지
Subtropical Soil and Water Conservation
2015年
3期
29-33,37
,共6页
地貌%崩岗%发育%分析
地貌%崩崗%髮育%分析
지모%붕강%발육%분석
geo-morphology%collapsing hill%development%analysis
崩岗是我国南方红壤区由水力和重力相互作用下土体受破坏而崩塌和冲刷的侵蚀现象。本文以江西省赣县崩岗为研究对象，采取GIS空间分析技术，开展了地貌因子对崩岗发育的影响研究，结果表明：崩岗主要分布在海拔在100～250 m以及相对高程在100～200 m之间的的低山丘陵区，分别占到崩岗总数量和总面积的77％以上和54％以上，以综合型和活动型崩岗为主；5～25°范围内的斜坡和陡坡是崩岗的高发区域，其数量和面积分别占到了总体的73.23％和72.51％，以综合型崩岗居多；东坡向崩岗数量最多，西坡向崩岗面积最大，并且大部分分布在半阳坡上；除条形崩岗凸形坡数量比凹形坡少之外，均以综合型和活动型崩岗数量最多和面积最大，其他崩岗类型数量和面积相当。崩岗受地貌因子影响显著，具有明显的地貌因子选择性。该研究成果为赣县崩岗水土保持生态修复与治理提供一定的数据支撑和依据。
崩崗是我國南方紅壤區由水力和重力相互作用下土體受破壞而崩塌和遲刷的侵蝕現象。本文以江西省贛縣崩崗為研究對象，採取GIS空間分析技術，開展瞭地貌因子對崩崗髮育的影響研究，結果錶明：崩崗主要分佈在海拔在100～250 m以及相對高程在100～200 m之間的的低山丘陵區，分彆佔到崩崗總數量和總麵積的77％以上和54％以上，以綜閤型和活動型崩崗為主；5～25°範圍內的斜坡和陡坡是崩崗的高髮區域，其數量和麵積分彆佔到瞭總體的73.23％和72.51％，以綜閤型崩崗居多；東坡嚮崩崗數量最多，西坡嚮崩崗麵積最大，併且大部分分佈在半暘坡上；除條形崩崗凸形坡數量比凹形坡少之外，均以綜閤型和活動型崩崗數量最多和麵積最大，其他崩崗類型數量和麵積相噹。崩崗受地貌因子影響顯著，具有明顯的地貌因子選擇性。該研究成果為贛縣崩崗水土保持生態脩複與治理提供一定的數據支撐和依據。
붕강시아국남방홍양구유수력화중력상호작용하토체수파배이붕탑화충쇄적침식현상。본문이강서성공현붕강위연구대상，채취GIS공간분석기술，개전료지모인자대붕강발육적영향연구，결과표명：붕강주요분포재해발재100～250 m이급상대고정재100～200 m지간적적저산구릉구，분별점도붕강총수량화총면적적77％이상화54％이상，이종합형화활동형붕강위주；5～25°범위내적사파화두파시붕강적고발구역，기수량화면적분별점도료총체적73.23％화72.51％，이종합형붕강거다；동파향붕강수량최다，서파향붕강면적최대，병차대부분분포재반양파상；제조형붕강철형파수량비요형파소지외，균이종합형화활동형붕강수량최다화면적최대，기타붕강류형수량화면적상당。붕강수지모인자영향현저，구유명현적지모인자선택성。해연구성과위공현붕강수토보지생태수복여치리제공일정적수거지탱화의거。
The collapsing hill is the erosion phenomenon in the red soil region of southern China that the soil is col-lapsed and scoured by hydraulic and gravitational interaction damage.Gan County was chosen for the study of the im-pact of the geo-morphological factors on the development of collapsing hill by means of GIS spatial statistical analytic technology.The results showed that, the collapsing hills are mainly distributed in the low mountain and hilly areas at the altitude between 100~250m and the relative height between 100~200m respectively, accounting for more than 77%of the total number and 54%of the total area, that mainly belong to the comprehensive and active types.The slope and steep slope between 5°and 25°are the high incidence area of collapsing hills, with the number and the area accounting for 73.23%and 72.51%of the total numbers and areas respectively.Of which, the comprehensive collap-sing hills are the main type collapse.The collapsing hills are mostly on the slopes with east aspect, but the slopes with west aspect cover the largest area of collapsing hills, mostly distributed in semi sunny slopes.Except the numbers of strip collapsing hills on the convex slope are less than those on the concave slope, the active and comprehensive collap-sing hills rank the top in numbers and areas, while the other types of collapsing hills are similar in numbers and areas with each other.
