Assessment of Land Degradation in Semi-Arid Zone of Central Tanzania (doi:10.7910/DVN/HADLCK)

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Part 1: Document Description
Part 2: Study Description
Part 3: Data Files Description
Part 4: Variable Description
Part 5: Other Study-Related Materials
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Document Description

Citation

Title:

Assessment of Land Degradation in Semi-Arid Zone of Central Tanzania

Identification Number:

doi:10.7910/DVN/HADLCK

Distributor:

Harvard Dataverse

Date of Distribution:

2021-05-26

Version:

1

Bibliographic Citation:

International Institute of Tropical Agriculture (IITA); University of Bonn, Germany, 2021, "Assessment of Land Degradation in Semi-Arid Zone of Central Tanzania", https://doi.org/10.7910/DVN/HADLCK, Harvard Dataverse, V1, UNF:6:jU30uW/R5JgiHw7dPr5iuQ== [fileUNF]

Study Description

Citation

Title:

Assessment of Land Degradation in Semi-Arid Zone of Central Tanzania

Identification Number:

doi:10.7910/DVN/HADLCK

Authoring Entity:

International Institute of Tropical Agriculture (IITA)

University of Bonn, Germany

Other identifications and acknowledgements:

Reith, Jonathan (University of Bonn, Germany)

Other identifications and acknowledgements:

Dubovky, Olena (University of Bonn, Germany)

Other identifications and acknowledgements:

Muthoni, Francis (International Institute of Tropical Agriculture (IITA))

Other identifications and acknowledgements:

Kimaro, Anthony (World Agroforestry Center)

Other identifications and acknowledgements:

Swai, Elirehema (Tanzania Agricultural Research Institute (TARI), Hombola)

Producer:

International Institute of Tropical Agriculture (IITA)

Date of Production:

2019-12

Distributor:

Harvard Dataverse

Distributor:

International Food Policy Research Institute (IFPRI)

Access Authority:

Muthoni, Francis

Depositor:

KM, IFPRI

Date of Deposit:

2021-02-17

Date of Distribution:

2021

Series Name:

Biophysical Survey

Holdings Information:

https://doi.org/10.7910/DVN/HADLCK

Study Scope

Keywords:

Agricultural Sciences, land degradation, sustainable agriculture, soil erosion, TANZANIA, EAST AFRICA, AFRICA SOUTH OF SAHARA, AFRICA

Topic Classification:

Natural resources, Sustainable agriculture

Abstract:

A sub-national field assessment of land degradation was conducted in the Kongwa districts of Tanzania in December 2019. 34 sampling plots were selected using a stratified sampling method based on a land cover map. One site that hosts Africa RISING technologies on land rehabilitation was purposely selected to act as a control. The primary sampling plots measured 100*100m and were subdivided into replicate sub-plots measuring 30x30m. A sub-sample of 3 sub-plots was selected in each primary plot for assessment of land degradation. The observations from 3 subplots (30*30) were averaged to obtain an aggregate value for the larger plot (100x100m). The antecedent biophysical conditions in the sampling plot were recorded i.e. the land use, degree of slope, topographical position, soil color, crop types grown and land tenure. The percentage of area that was undegraded in each plot was also estimated visually. </p> A questionnaire for mapping land degradation and sustainable land management was applied for visual assessment of the type, extent, degree, and direct causes of land degradation. The different types of land degradation, for example erosion by water, were scored whether they are present or not, in addition to their extent and degree (intensity). The extent represented the proportion of a sub-plot covered by different types of land degradation, the degree was divided into 4 classes in ascending order of intensity of land degradation (0 = Light, 1 = Moderate, 2 = Strong, 3 = Severe). Moreover, the type, purpose, extent, and effectiveness of sustainable land management practices (SLM) were visually assessed in every subplot. Data were recorded using the mobile-based KoboCollect toolbox and transmitted to a cloud database for storage and descriptive analysis.

Time Period:

2019-09-01-2020-08-31

Date of Collection:

2019-12-2019-12

Country:

Tanzania, United Republic of

Geographic Unit(s):

District

Unit of Analysis:

100x100m sampling plot

Universe:

Farm plot

Kind of Data:

observational data

Methodology and Processing

Sampling Procedure:

34 sampling plots were selected from using a stratified sampling method based on a land cover map. One site that hosts Africa RISING technologies on land rehabilitation was purposely selected to act as a control. The primary sampling plots measured 100*100m and were subdivided into replicate sub-plots measuring 30x30m. A sub-sample of 3 sub-plots was selected in each primary plot for assessment of land degradation. The observations from 3 subplots (30*30) were averaged to obtain an aggregate value for the larger plot (100x100m).

Sources Statement

Data Access

Citation Requirement:

International Institute of Tropical Agriculture (IITA); University of Bonn, Germany. 2021. Assessment of Land Degradation in Semi-Arid Zone of Central Tanzania. Washington, DC: International Food Policy Research Institute (IFPRI) [dataset]. <a href="https://doi.org/10.7910/DVN/HADLCK">https://doi.org/10.7910/DVN/HADLCK</a>. Harvard Dataverse. Version 1.

Disclaimer:

The data files in this dataset are the unit record or ‘raw’ data files. Information that would allow survey respondents to be identified has been deleted from the files, but all other information remains. The user of these files will need to take care in handling missing observations, outliers, and violations of logical consistency.

Notes:

If you are interested in accessing restricted datasets, kindly fill out this <a href="https://goo.gl/forms/muJtiDnuwhfAftQ83"> data use agreement form</a>.

Other Study Description Materials

Related Publications

Citation

Title:

Reith J.; Dubovky, O.; Muthoni, FK.; Kimaro, A.; Swai, E. Spatial Assessment of Land Degradation in Semi-Arid Zone of Central Tanzania.

Bibliographic Citation:

Reith J.; Dubovky, O.; Muthoni, FK.; Kimaro, A.; Swai, E. Spatial Assessment of Land Degradation in Semi-Arid Zone of Central Tanzania.

File Description--f4414344

File: landDegradation_SLM_Kongwa.tab

  • Number of cases: 34

  • No. of variables per record: 73

  • Type of File: text/tab-separated-values

Notes:

UNF:6:jU30uW/R5JgiHw7dPr5iuQ==

Variable Description

List of Variables:

Variables

plotID

f4414344 Location:

Summary Statistics: Valid 34.0; StDev 9.958246164193104; Max. 34.0; Mean 17.5; Min. 1.0;

Variable Format: numeric

Notes: UNF:6:PHF1dLAAFjEImsfCJLQ4fQ==

district

f4414344 Location:

Variable Format: character

Notes: UNF:6:CJRaQdutDm3n0EYzvogsMg==

ward

f4414344 Location:

Variable Format: character

Notes: UNF:6:8cfkh/cvpmYhSNda76ItTA==

village

f4414344 Location:

Summary Statistics: Max. NaN; Min. NaN; Valid 0.0; StDev NaN; Mean NaN

Variable Format: numeric

Notes: UNF:6:xBmpLH3OUiVgb2BPedDQcA==

latitude

f4414344 Location:

Summary Statistics: Min. NaN; StDev NaN; Valid 0.0; Max. NaN; Mean NaN

Variable Format: numeric

Notes: UNF:6:xBmpLH3OUiVgb2BPedDQcA==

longitude

f4414344 Location:

Summary Statistics: Max. NaN; StDev NaN; Valid 0.0; Min. NaN; Mean NaN

Variable Format: numeric

Notes: UNF:6:xBmpLH3OUiVgb2BPedDQcA==

altitude

f4414344 Location:

Summary Statistics: StDev 137.59280452624515; Valid 34.0; Mean 1186.0882352941176; Max. 1482.0; Min. 898.0;

Variable Format: numeric

Notes: UNF:6:jze4lrdRYSpkDmAR2NMaXQ==

vegetationType

f4414344 Location:

Variable Format: character

Notes: UNF:6:YeTUBD5PnCGA/e/Guto3+g==

slope

f4414344 Location:

Variable Format: character

Notes: UNF:6:MecaodamL29zOBJx93PkBg==

slopePosition

f4414344 Location:

Variable Format: character

Notes: UNF:6:zME0YZpjzMBCrVp1pK0s7A==

soilType

f4414344 Location:

Variable Format: character

Notes: UNF:6:WoFl2yg1omO3LM9ZULKk6g==

ownership

f4414344 Location:

Variable Format: character

Notes: UNF:6:UCZDo7ALHSK/fcTQ5EZjPQ==

landUse

f4414344 Location:

Variable Format: character

Notes: UNF:6:2mYWHKmWlAPeWRN5fcS+oA==

crop

f4414344 Location:

Variable Format: character

Notes: UNF:6:U3cqNznHKCp0WqJJRS6Gxg==

treeCover

f4414344 Location:

Summary Statistics: Min. 0.0; Max. 31.0; StDev 6.2813562803062375; Valid 34.0; Mean 2.6176470588235294;

Variable Format: numeric

Notes: UNF:6:KZasHJp8oa8gfG+0HUg2XA==

shrubCover

f4414344 Location:

Summary Statistics: Min. 0.0; StDev 23.66552431276809; Mean 16.941176470588236; Max. 88.0; Valid 34.0;

Variable Format: numeric

Notes: UNF:6:vTLnrZur5pL9M7LvMnurqw==

herbaceousCover

f4414344 Location:

Summary Statistics: StDev 23.847050513256733; Min. 0.0; Max. 88.0; Valid 34.0; Mean 20.5;

Variable Format: numeric

Notes: UNF:6:QInoK+qDyhuiQPoTve6j0A==

bareCover

f4414344 Location:

Summary Statistics: Valid 34.0; StDev 25.832726690594328; Mean 68.05882352941177; Max. 100.0; Min. 8.0;

Variable Format: numeric

Notes: UNF:6:78fXlXepzX1jpkq0jpsB8Q==

LD

f4414344 Location:

Summary Statistics: Valid 34.0; StDev 0.38695299497594743; Min. 0.0; Max. 1.0; Mean 0.823529411764706

Variable Format: numeric

Notes: UNF:6:co03VyPnCPMkUYhwUvnq6w==

waterErosionsheet

f4414344 Location:

Summary Statistics: Max. 1.0; Valid 28.0; StDev 0.47559486560567094; Mean 0.6785714285714285; Min. 0.0

Variable Format: numeric

Notes: UNF:6:IhOg6HGOsC4eZ3O3rNzPIA==

waterErosionrill

f4414344 Location:

Summary Statistics: Min. 0.0; Max. 1.0; Mean 0.75; Valid 28.0; StDev 0.44095855184409843;

Variable Format: numeric

Notes: UNF:6:2qzOHAm78ckgD8IZx4CbQg==

waterErosiongully

f4414344 Location:

Summary Statistics: Min. 0.0; StDev 0.4755948656056709; Mean 0.32142857142857145; Max. 1.0; Valid 28.0

Variable Format: numeric

Notes: UNF:6:ULcXdKA65NMLsWgqikZGtw==

waterErosionmassMovement

f4414344 Location:

Summary Statistics: StDev 0.0; Min. 0.0; Mean 0.0; Valid 28.0; Max. 0.0

Variable Format: numeric

Notes: UNF:6:pe6jT/h5LJ0yq0P7J6YTww==

waterErosionriverBank

f4414344 Location:

Summary Statistics: Min. 0.0; StDev 0.0; Valid 28.0; Mean 0.0; Max. 0.0

Variable Format: numeric

Notes: UNF:6:pe6jT/h5LJ0yq0P7J6YTww==

waterErosionsedimentation

f4414344 Location:

Summary Statistics: Min. 0.0; Valid 28.0; Max. 1.0; StDev 0.44095855184409843; Mean 0.25;

Variable Format: numeric

Notes: UNF:6:JlkhLphOO6nlktlw7cgV+A==

waterErosionnone

f4414344 Location:

Summary Statistics: Mean 0.17857142857142855; Min. 0.0; Max. 1.0; StDev 0.3900210277874797; Valid 28.0

Variable Format: numeric

Notes: UNF:6:DWvyO+JrTU0mNeiFF0tYDg==

waterErosionextent

f4414344 Location:

Summary Statistics: Valid 29.0; StDev 26.979284152827603; Max. 90.0; Min. 0.0; Mean 30.89655172413793;

Variable Format: numeric

Notes: UNF:6:N9q0Rj9Wx1jnT8KM3QZvhg==

waterErosiondegree

f4414344 Location:

Summary Statistics: Valid 28.0; Min. 0.0; Max. 3.0; Mean 1.7142857142857142; StDev 1.0131411680782823

Variable Format: numeric

Notes: UNF:6:DyAWWrZSqQ2/TGhXdBnKPA==

biologicalDeteriorationreductionofVegCover

f4414344 Location:

Summary Statistics: Min. 0.0; Max. 1.0; StDev 0.5039526306789697; Mean 0.5714285714285714; Valid 28.0;

Variable Format: numeric

Notes: UNF:6:tRO5oTVyQ2rb1WyfoxY83g==

biologicalDeteriorationfires

f4414344 Location:

Summary Statistics: Mean 0.07142857142857144; StDev 0.26226526415648094; Min. 0.0; Max. 1.0; Valid 28.0;

Variable Format: numeric

Notes: UNF:6:knnxKPasEfPZ3W8FNjFc/A==

biologicalDeteriorationinvasiveSpecies

f4414344 Location:

Summary Statistics: Valid 28.0; Max. 1.0; Mean 0.25; Min. 0.0; StDev 0.44095855184409843

Variable Format: numeric

Notes: UNF:6:JsdCWvnOb9S85A8+mIoNcw==

biologicalDeteriorationbushEncroachment

f4414344 Location:

Summary Statistics: Mean 0.14285714285714288; Max. 1.0; Valid 28.0; StDev 0.35634832254989907; Min. 0.0

Variable Format: numeric

Notes: UNF:6:OvHBLqOQ6kmlQPhucZ+OMA==

biologicalDeteriorationnone

f4414344 Location:

Summary Statistics: Min. 0.0; Valid 28.0; StDev 0.5039526306789697; Max. 1.0; Mean 0.42857142857142855;

Variable Format: numeric

Notes: UNF:6:NMofE4i+7UfVH6gKLWCbSw==

biologicalDeteriorationextent

f4414344 Location:

Summary Statistics: Max. 100.0; Min. 0.0; Mean 35.25; StDev 35.95431772350802; Valid 28.0

Variable Format: numeric

Notes: UNF:6:TY0d6e2E5r+rkMyBKYspAw==

biologicalDeteriorationdegree

f4414344 Location:

Summary Statistics: Mean 1.4642857142857142; StDev 1.201300001299298; Valid 28.0; Max. 3.0; Min. 0.0

Variable Format: numeric

Notes: UNF:6:pB9+zoxcVW28fYy4VifR0Q==

windErosiontopSoil

f4414344 Location:

Summary Statistics: Max. 1.0; StDev 0.49734746139343816; Mean 0.3928571428571429; Min. 0.0; Valid 28.0;

Variable Format: numeric

Notes: UNF:6:uaLNsEQAq2pQrifiq/Claw==

windErosiondeflation

f4414344 Location:

Summary Statistics: Max. 0.0; Valid 28.0; StDev 0.0; Min. 0.0; Mean 0.0

Variable Format: numeric

Notes: UNF:6:pe6jT/h5LJ0yq0P7J6YTww==

windErosionoffsite

f4414344 Location:

Summary Statistics: Min. 0.0; StDev 0.0; Valid 28.0; Mean 0.0; Max. 0.0

Variable Format: numeric

Notes: UNF:6:pe6jT/h5LJ0yq0P7J6YTww==

windErosionnone

f4414344 Location:

Summary Statistics: Mean 0.6071428571428571; StDev 0.49734746139343816; Min. 0.0; Max. 1.0; Valid 28.0

Variable Format: numeric

Notes: UNF:6:IVFhIhYnUZJ6JxBJxpZvmg==

windErosionextent

f4414344 Location:

Summary Statistics: Max. 100.0; Min. 0.0; StDev 36.76456987214181; Mean 25.82142857142857; Valid 28.0;

Variable Format: numeric

Notes: UNF:6:CVJJS6esYrtgVSLYtwYl1g==

windErosiondegree

f4414344 Location:

Summary Statistics: StDev 1.1773883752795367; Valid 28.0; Min. 0.0; Mean 0.8571428571428572; Max. 3.0

Variable Format: numeric

Notes: UNF:6:g02T0mAT7XPIW5S6mPa0Mw==

undegraded(%)

f4414344 Location:

Summary Statistics: Min. 0.0; Valid 28.0; Max. 83.0; StDev 25.701584164627448; Mean 35.142857142857146

Variable Format: numeric

Notes: UNF:6:1bohBn0dH6Xxb9vaazXHsw==

directCausesofLDsoilManagement

f4414344 Location:

Summary Statistics: Min. 0.0; Valid 28.0; Max. 1.0; StDev 0.5078745001833701; Mean 0.46428571428571425

Variable Format: numeric

Notes: UNF:6:D2JQ4yB8566Mt/ssipLqbg==

directCausesofLDcropManagement

f4414344 Location:

Summary Statistics: Mean 0.32142857142857145; Max. 1.0; StDev 0.4755948656056708; Valid 28.0; Min. 0.0

Variable Format: numeric

Notes: UNF:6:pxwT6b7gDqc2nCzfwlEtww==

directCausesofLDdeforestation

f4414344 Location:

Summary Statistics: Min. 0.0; StDev 0.26226526415648094; Mean 0.07142857142857144; Max. 1.0; Valid 28.0

Variable Format: numeric

Notes: UNF:6:7GDOsnDwgVbTFgLTK4JnTw==

directCausesofLDvegetationOverExploitation

f4414344 Location:

Summary Statistics: Valid 28.0; StDev 0.44095855184409843; Mean 0.25; Max. 1.0; Min. 0.0;

Variable Format: numeric

Notes: UNF:6:6MvVf9hfsny5KdT1NoB4zQ==

directCausesofLDoverGrazing

f4414344 Location:

Summary Statistics: Mean 0.7142857142857142; Max. 1.0; Valid 28.0; Min. 0.0; StDev 0.46004370622823615

Variable Format: numeric

Notes: UNF:6:SYZVbsMZ3Lp6VC1B+jdqYQ==

directCausesofLDmining

f4414344 Location:

Summary Statistics: Min. 0.0; Valid 28.0; Max. 1.0; StDev 0.1889822365046137; Mean 0.035714285714285726

Variable Format: numeric

Notes: UNF:6:Vr3qbyi6mNzD89hAIs2V2w==

directCausesofLDnatural

f4414344 Location:

Summary Statistics: Valid 28.0; Max. 1.0; Mean 0.25; Min. 0.0; StDev 0.44095855184409843

Variable Format: numeric

Notes: UNF:6:n94+zhGDYQs1vkivGS8PLA==

directCausesofLDnone

f4414344 Location:

Summary Statistics: StDev 0.31497039417435607; Max. 1.0; Mean 0.10714285714285715; Valid 28.0; Min. 0.0

Variable Format: numeric

Notes: UNF:6:zLSKEmomAjV++VJOMEHbfw==

SLMapplied

f4414344 Location:

Summary Statistics: Mean 0.6176470588235294; Valid 34.0; StDev 0.49327021805638166; Max. 1.0; Min. 0.0

Variable Format: numeric

Notes: UNF:6:1Rz6G03HLKO0mABtRNKrEg==

SLMAgronomicintercroping

f4414344 Location:

Summary Statistics: Min. 0.0; Valid 12.0; Max. 1.0; Mean 0.6666666666666666; StDev 0.49236596391733095

Variable Format: numeric

Notes: UNF:6:Qm4rlQDTpHWKvmSWq3Le3Q==

SLMAgronomicstripCropping

f4414344 Location:

Summary Statistics: Min. 0.0; Mean 0.0; StDev 0.0; Max. 0.0; Valid 12.0;

Variable Format: numeric

Notes: UNF:6:1X7Rp4+c9KgO86YF/j8hjg==

SLMAgronomicmulching

f4414344 Location:

Summary Statistics: StDev 0.49236596391733095; Max. 1.0; Mean 0.33333333333333337; Valid 12.0; Min. 0.0

Variable Format: numeric

Notes: UNF:6:ad0ifm5CAn2ND9hLYQ7QZg==

SLMAgronomicirrigation

f4414344 Location:

Summary Statistics: StDev 0.0; Valid 12.0; Min. 0.0; Mean 0.0; Max. 0.0

Variable Format: numeric

Notes: UNF:6:1X7Rp4+c9KgO86YF/j8hjg==

SLMAgronomicminTillage

f4414344 Location:

Summary Statistics: Max. 1.0; Mean 0.41666666666666663; Valid 12.0; StDev 0.5149286505444373; Min. 0.0

Variable Format: numeric

Notes: UNF:6:biVDHGxXIVxkvP0ZOvx8PA==

SLMAgronomiccontourTillage

f4414344 Location:

Summary Statistics: Min. 0.0; Valid 12.0; StDev 0.49236596391733095; Mean 0.6666666666666667; Max. 1.0;

Variable Format: numeric

Notes: UNF:6:A2pTzC9gqs9FSLdkubB9Cg==

SLMAgronomicnone

f4414344 Location:

Summary Statistics: Mean 0.42857142857142855; Valid 21.0; Min. 0.0; StDev 0.50709255283711; Max. 1.0

Variable Format: numeric

Notes: UNF:6:UO/Lw5em+9TLcq9Mcb5lYA==

SLMAgronomicextent

f4414344 Location:

Summary Statistics: Max. 100.0; Mean 67.25; Min. 7.0; Valid 12.0; StDev 31.614510477425913

Variable Format: numeric

Notes: UNF:6:N/BjWlZ1BK6CMmIQ/HiQZQ==

SLMAgronomiceffectiveness

f4414344 Location:

Summary Statistics: Max. 4.0; Min. 0.0; StDev 1.2154310870109943; Valid 12.0; Mean 2.75

Variable Format: numeric

Notes: UNF:6:KtWa316q0PFlAekHMPMPgg==

SLMVegetativeagroforestry

f4414344 Location:

Summary Statistics: StDev 0.48038446141526137; Min. 0.0; Mean 0.3076923076923077; Max. 1.0; Valid 13.0

Variable Format: numeric

Notes: UNF:6:NrLiZ5p8GRNH4wDbp6NjSg==

SLMVegetativehedgerow

f4414344 Location:

Summary Statistics: Valid 13.0; Mean 0.5384615384615384; Max. 1.0; StDev 0.5188745216627708; Min. 0.0;

Variable Format: numeric

Notes: UNF:6:UtyFl9DhUKm1RUKDxThA2A==

SLMVegetativecoverCrop

f4414344 Location:

Summary Statistics: Max. 1.0; Mean 0.6923076923076923; Valid 13.0; Min. 0.0; StDev 0.48038446141526137;

Variable Format: numeric

Notes: UNF:6:6/gbMuqLDdkIAbPqXrKiiA==

SLMVegetativenone

f4414344 Location:

Summary Statistics: Mean 0.5714285714285714; Valid 21.0; StDev 0.50709255283711; Max. 1.0; Min. 0.0

Variable Format: numeric

Notes: UNF:6:8bFrqhj1sp/7J4xV5UY8cg==

SLMVegetativeextent

f4414344 Location:

Summary Statistics: Min. 5.0; Max. 90.0; StDev 29.028279756834124; Mean 36.84615384615385; Valid 13.0

Variable Format: numeric

Notes: UNF:6:KMAuGncAg/uFtcL9nUn2mQ==

SLMVegetativeeffectiveness

f4414344 Location:

Summary Statistics: StDev 1.3008872711759818; Max. 4.0; Mean 1.7692307692307692; Min. 0.0; Valid 13.0;

Variable Format: numeric

Notes: UNF:6:ZU9sfqfduh1hkcCjJTVJ8w==

SLMManagementbushClearing

f4414344 Location:

Summary Statistics: Mean 0.42857142857142855; StDev 0.5345224838248487; Min. 0.0; Valid 7.0; Max. 1.0;

Variable Format: numeric

Notes: UNF:6:vJKr1JaC1WWGHvKAghXk5g==

SLMManagementfallow

f4414344 Location:

Summary Statistics: Valid 7.0; Min. 0.0; StDev 0.5345224838248488; Mean 0.5714285714285714; Max. 1.0;

Variable Format: numeric

Notes: UNF:6:IvAXPN6Ddh+OTNKuWFjiig==

SLMManagementzeroGrazing

f4414344 Location:

Summary Statistics: Valid 7.0; Min. 0.0; Max. 0.0; StDev 0.0; Mean 0.0;

Variable Format: numeric

Notes: UNF:6:QM85vGgScfrq5ScOB1wI4A==

SLMManagementnone

f4414344 Location:

Summary Statistics: Mean 0.7142857142857143; Min. 0.0; StDev 0.46291004988627577; Valid 21.0; Max. 1.0;

Variable Format: numeric

Notes: UNF:6:JsZgIlx1LU7Fj6C4Os0iHA==

SLMManagementextent

f4414344 Location:

Summary Statistics: Max. 100.0; StDev 38.53075456851381; Min. 17.0; Mean 69.57142857142857; Valid 7.0

Variable Format: numeric

Notes: UNF:6:b0+ipaamlV3RwnnAOUVgIQ==

SLMManagementeffectiveness

f4414344 Location:

Summary Statistics: StDev 1.1126972805283737; Valid 7.0; Min. 0.0; Max. 3.0; Mean 2.2857142857142856

Variable Format: numeric

Notes: UNF:6:9MZQ79orlikahcpnSiakfQ==

extentWithoutSLM

f4414344 Location:

Summary Statistics: Valid 21.0; Max. 83.0; StDev 27.170975410571938; Mean 29.476190476190478; Min. 0.0;

Variable Format: numeric

Notes: UNF:6:pJdN2uiYioi6/KpBnV1aug==

Other Study-Related Materials

Label:

Field_protocol.pdf

Notes:

application/pdf