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Understanding the spatial distribution of hydrologic sensitive areas in the landscape using soil topographic index approach

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International Soil and Water Conservation Research 2016年第4期4卷 278-283页

作者： Yiwen Wu Subhasis Giri Zeyuan Qiu Department of Chemistry and Environmental Science New Jersey Institute of TechnologyUniversity HeightsNewarkNJ 07102USA

Maintaining healthy watershed is pivotal to ensure sustainability in water resources thereby improving the carrying capacity of the *** and identifying the spatial variability of hydrologically sensitive areas(HSAs)in a watershed is an important step to prioritizing the landscape to maintain water sustainability with limited resources.A spatial technique known as Soil Topographic Index(STI)was used to identify HSAs in the *** study was conducted in Clinton and Tewksbury Townships in New Jersey,United *** different scenarios(STI>=9,STI>=10,and STI>=11)were conducted to understand the spatial distribution of HSAs in the *** following conclusions were derived from this ***,a more detail representation of HSAs in the watershed was observed when applying the STI technique with a fine scale light detection and ranging(LiDAR)digitial elevation ***,all three scenarios consistently identified perennial stream corridors as HSAs;therefore,it is important to protect perennial stream corridors through implementation of various land use ***,this study analyzes the land use pattern of HSAs under the three scenarios and identifies the HSAs for high intensity land uses such as agriculture and urban to be the high priority locations for implementing best management practices for water quality *** procedures developed in this study can be applied to watersheds in other parts of the world with similar physiographic characteristics.

关键词： Soil topographic index hydrologic sensitive areas Healthy watersheds initiative Variable source area Wetness index

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