In this paper,two kinds of land degradation indicators,named sandy soil index(SSI) and soil degradation index(SDI),are proposed based on Hyperion Data.
提出了两种针对Hyperion数据的土地退化指数计算方法:沙化土壤指数(SSI)和土壤退化指数(SDI),并以典型地区的数据进行验证。
Based on the Hyperion data as well as under the inspiration of soil line, reflectance curve characteristic, spectral match and spectral angle mapper, this paper brings forward two kinds of land degradation indicators which are called sandy soil index (SSI) and soil degradation index (SDI).
本文以高光谱Hyperion影像为数据源,在研究分析土壤反射光谱特征的基础上,结合土壤线原理、光谱匹配技术以及光谱角制图原理,提出两种针对Hyperion数据的土地退化指数:沙化土壤指数(SSI)和土壤退化指数(SDI),实验表明这两种指标不但能够真实的反映出地面土地退化信息情况,为土地的可持续利用服务,并且简单方便、切实可行。
In this paper,two kinds of land degradation indicators,named sandy soil index(SSI) and soil degradation index(SDI),are proposed based on Hyperion Data.
提出了两种针对Hyperion数据的土地退化指数计算方法:沙化土壤指数(SSI)和土壤退化指数(SDI),并以典型地区的数据进行验证。
Based on analyzing the statistical characteristics of SOM and soil degradation index(SDI), the following results were obtained: the horizontal variation of SOM content from four types of land utilization in Napahai wetland ecosystem is marsh>swamp meadow>reclaimed wetland>meadow, the coefficient of variation(C.
对云南省西北高原纳帕海湿地生态系统受不同强度人为活动干扰的土壤有机质空间分布状况进行研究,通过统计学特征值和土壤退化指数分析,结果表明:纳帕海湿地土壤有机质含量的水平空间分异为沼泽>沼泽化草甸>垦后湿地>草甸,变异程度为44。
Based on the principle of soil water balance,including precipitation,temperature and other observations,a model of soil drought index was built.
从土壤水分平衡原理出发,以降水量、温度和小流域水文因子等为基础,建立了土壤干旱指数模型,利用女儿寨小流域气象站的资料,计算小流域内土壤干旱指数,划分了干旱等级,并分析了土壤干旱的时空分配特征。
Based on the principle of soil water balance, including precipitation, temperature and other observations, this article built a model of soil drought index.
从土壤水分平衡原理出发,以降水量、温度和区域水文观测等因子为基础,建立了土壤干旱指数模型。
The main conclusions are as following:in low mountain areas,the index of soil anti-scourability is in evidently direct proportion to the existent masses of litter layer.
在青海大通县北川河流域分浅山区和脑山区各选择了5种退耕还林配置模式,研究了不同配置模式对土壤抗冲性的影响,结果表明:在浅山区,土壤抗冲性指数与枯落物现存量呈显著正相关,以模式D(中国沙棘)的抗冲性指数最大,为1。