Skip to main content

Where Pakistan Stands In Environmental Paradigm

Specific environmental problems in Pakistan & their aggravation by human activities directly or indirectly Climate change
Environmental condition of Pakistan is facing serious challenges, In this article, we will try to explore what is baseline situation in Pakistan and how environmental issues are being aggravated by human and climate change. We will also will try to explore where the problem lays what is extent of damage by humans and what fault lies with government and and policy directions. What is possible remedy to it?
Image by Denny Franzkowiak from Pixabay 
Location

Pakistan is located 29.4000° N, 69.1833° E, It is urbanized country of south Asia covering area of 796095 sq-km, Pakistan is environmentally ranked 131 out of 146 countries (Yale University Environmental Sustainability Index 2005), ranked 112 out of 178 countries (New Economics Foundation: Happy Planet Index 2006 New Economics Foundation: Happy Planet Index 2006).
The environmental conditions in Pakistan are a matter of great concern. A number of serious environmental problems are present in Pakistan, which are of great ecological concern in terms of its sustainable economic future.
Climate
Pakistan lies in temperate zone, above the tropic of cancer. The climate varies from tropical to temperate. Pakistan has four seasons: a cool, dry winter marked by mild temperatures from December through February; a hot, dry spring from March through May; the summer rainy season, or southwest monsoon period, from June through September; and the retreating monsoon period of October and November. The onset and duration of these seasons vary somewhat according to location. Rainfall variation as less than 10 inches a year to over 150 inches a year. 
Environmental Problems in Pakistan
  • Industrial wastes
  • Agricultural runoff & Evidence of Pesticide Contamination
  • Deforestation
  • Soil erosion
  • Desertification
  • Water pollution from raw sewage
  • Urban Air Pollution
  • Airborne Lead Pollution
  • Indoor Air Pollution
  • Groundwater Changes & Limited natural fresh water resources
  • Water Supply and Sanitation
  • Industrial Effluent
  • Salinity
  • Acid Rain
  • Overpopulation
  • Ozone
  • Smog
Industrial Waste

Industrial waste is the waste produced by industrial activity, such as that of factories, mills and mines. In Pakistan major industrial cities are Karachi Faisalabad, Gujranwala, and Hyderabad and many other small industrial zones also. Industrial waste in injurious to health directly, also it contaminates groundwater and soil of area.
Aggravation by humans: Humans play a direct role in it by constructing houses near or at approachable distance from industry because of factor of job opportunity any industrial area soon becomes crowded. All damaging effects of industrial waste impact directly.
Directly: Direct exposure of body to waste
Indirectly: Contamination of soil or underground water and also air.
Aggravation by climate: N/A

Agricultural runoff & Evidence of Pesticide Contamination
Pakistan is an agricultural country.to increase the productivity pesticides are used. Pesticides with solubility of 10 ppm or higher are lost mainly in the water phase of runoff, and have adverse effect on human health indirectly.
www.azud.com
Aggravation by humans: Use of pesticides in farming & agriculture is aggravation.
Directly: Use of pesticides in farming & agriculture is direct aggravation
Indirectly: N/A
Aggravation by climate: N/A

Deforestation
It is defined as cutting down of trees.
Aggravation by humans: Humans play a killing role for themselves by cutting down trees.
Directly: Cutting down of trees, for burning and furniture making purpose results in continues decrease in forest cover.
Indirectly: N/A
Aggravation by climate: Floods and other natural disaster some time reduce forest cover.

Soil Erosion
Soil erosion is a natural process, occurring over geological time, and indeed it is a process that is essential for soil formation in the first place. It is removal of soil particles by the motion of wind or water.
Directly: Misuse of land, Mismanagement of arable
Indirectly: Poor canal system, forest cutting
Aggravation by climate: Floods


Desertification
Land degradation in dry lands
Aggravation by humans: Intensification of agriculture is actually one of the reasons behind desertification.
Directly: Population pressure water logging and salinity
Indirectly: Forest cutting, Mismanagement in agriculture
Aggravation by climate: Rain factor, salinity.


Water Pollution From Raw Sewage
Sewage is a water-carried waste, in solution or suspension that is intended to be removed from a community.
Aggravation by humans: Humans are responsible for not defining a proper mechanism to treat sewage or discharge it.
Directly: No proper mechanism, effecting soil and water resources.
Indirectly: Not installing sewage treatment plant
Aggravation by climate: N/A


Airborne Lead Pollution
Lead Emission during various processes is extremely dangerous for humans. : Air pollution is the introduction into the atmosphere of chemicals, particulates, or biological materials that cause discomfort, disease, or death to humans, damage other living organisms such as food crops, or damage the natural environment or built environment.
Aggravation by humans: The original sources of lead can include leaded gasoline, industrial lead emissions to air, water, and land (e.g., from smelters), leached lead from lead pipes carrying drinking water, contaminated food, lead paint, and pottery.
Directly: Gasoline, Industries Lead Pipes
Indirectly: N/A
Aggravation by climate: N/A
Recommendation: the government intervened to ban lead from gasoline. In 2001-2002 all major refineries announced that they would move to production of lead free gasoline (Paul et al, 2003).

Urban Air Pollution
Air pollution is the introduction into the atmosphere of chemicals, particulates, or biological materials that cause discomfort, disease, or death to humans, damage other living organisms such as food crops, or damage the natural environment or built environment.
Aggravation by humans: Vehicles in poor mechanical condition and low levels of fuel efficiency. Over the past decade the number of diesel trucks in major cities has increased dramatically, creating an additional source of pollution
Directly: Vehicles
Indirectly: N/A
Aggravation by climate: CO N cycle is disturbed.

Indoor Air Pollution
Within a confined area due to burning of specific fuels air accumulates causing high risk indoor air pollution
Aggravation by humans: The use of traditional biomass fuels such as wood, dung and crop residues is widespread across the country. According to the 1998 Pakistan Census 86 percent of rural households and 32 percent of urban households rely on these as their primary cooking fuel
Directly: Wood burning in closed room, use of gas heaters Crop residue and dung.
Indirectly: Person working in factory or dust arena is likely to have disease due to impact of close air pollution.
Aggravation by climate: N/A

Groundwater Changes & Limited Natural Fresh Water Resources
Ground water table is being affected and it results in reduction of small portion of fresh water reservoir. Much of Balochistan also has saline groundwater.
Aggravation by humans: Increasing abstraction has resulted in wells now reaching into saline layers.
Directly: Logging
Indirectly: Agricultural productivity
Aggravation by climate: Climatic shift and change rain pattern

Water Supply & Sanitation
It is defined as approachability of pure water to every individual Pakistan increased it from 85% in 1990 to 92% in 2010
Aggravation by humans: Govt is responsible for providing water facility to individuals.
Directly: Not supplying or Fail to create a system which creates opportunity to provide water to everyone.
Indirectly: N/A
Aggravation by climate: N/A 

Acid Rain
Acid deposition in rain water, Pollution causing gases is main source of acid rain.
Aggravation by humans: Human activities are the primary cause of gases which later become constituent of ozone.
Directly: Fuel Burning
Indirectly: Nox, Sox
Aggravation by climate: Contaminated air can act as a catalyst for acid rain.

Ozone
The ozone layer is a layer in Earth's atmosphere that absorbs most of the Sun's UV radiation. It contains relatively high concentrations of ozone (O3). Pakistan is a very small contributor in greenhouse effect; Pakistan contributes only 0.2 % greenhouse gases of the whole world. (Wikipedia)
Aggravation by humans:
Directly: Refrigerators, fire extinguishers chemicals containing chlorine and/or bromine. Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), carbon tetrachloride and methyl chloroform. Halons (brominated fluorocarbons)
Indirectly: Pesticides
Aggravation by climate: Polluted climate enhances ozone depletion.

Smog
 Smoke + fog
Aggravation by humans: Coal, transportation emission
Directly: Truck buses automobiles the unnecessarily large amounts of gasoline, oil, coal and natural gas we burn every day to heat our homes, power our vehicles, manufacture goods and provide electricity.
Indirectly: thermal power plant
Aggravation by climate: N/A

Positive Steps Taken
The government has expressed concern about environmental threats to economic growth and social development and, since the early 1990's, has addressed environmental concerns with new legislation and institutions such as the Pakistan Environment Protection Council. Yet, foreign lenders provide most environmental protection funds, and only 0.04 percent of the government’s development budget goes to environmental protection. Thus, the government’s ability to enforce environmental regulations is limited, and private industries often lack funds to meet environmental standards established by international trade organizations. National Conservation Strategy in 1992 to the formulation of National Environment Policy in 2005.

Sources:
Pakistan Strategic Country Environmental Assessment 
Wikipedia



Comments

Popular posts from this blog

GDAL & OGR (Importance & Installation)

GDAL & OGR libraries allow you to perform various GIS operations like, Flow Direction or working with DEM few raster & vector analysis outside GIS environment. Image by  Gerd Altmann  from  Pixabay   What Knowledge one should have :  Basic Programming, Python What software you need : Python IDLE or command line, GDAL libraries files (explained later) Installation : 1- Once you have Python installed. 2- Start python IDLE to check which version of python you are using available at top as shown        Python IDLE 3- Install two files available at link below based on your version of python. Download  Link :  http://www.gisinternals.com/query.html?content=filelist&file=release-1500-gdal-2-1-2-mapserver-7-0-2.zip Install first :  gdal-201-1500-core.msi  and then:   GDAL-2.1.2.win32-py2.7.msi * Note specify the path C:\Python27\ArcGIS10.3\Lib\site-packages\ for GDAL-2.1.2.win32-py3.2.msi as shown in figure for (ArcGIS lib installed in python) Pyth

“Rule Based Classification” using eCognition

Availability of high resolution satellite imagery leads to a growing number of change detection techniques and algorithms,  research is done using remote sensing and GIS. In this tutorial, we build on the classification category feature set by introducing neighborhood relationships and topological functions. Secondly, we use relative elevation values and fuzzy rules for the classification systems. This study demonstrates that the rule-based classifier is a significantly better approach than the classical per-pixel classifiers & object based NN method . Image Source: NASA  Methodology 1.    Open the eCognition software. 2.    Click on “create new project” option. 3.    Import the “Study area image” from the workspace. 4.    Assign weights to NIR band 5.    Click on the layers and rename each layer. Layer 1 as blue, layer 2 as green, and 3rd as red and 4th NIR. 6.   Go to “Process” option on the top toolbar and open “ process tree” All the operations in ec

Working With Raster Calculator In ArcMap

Raster Calculator extracts information from a Raster Image, based on user requirements. Image by James Osborne from Pixabay Working with Raster Calculator To explore the highest elevation areas in your DEM raster e.g. select Spatial Analyst Tools à Map Algebra   Raster Calculator Tool  Raster Calculator Double click on the layer e.g. in my case it is  DEM_Layer or any raster of your choice,   to enter this into the ‘ search ’ window. Click on the “ > ” symbol e.g. and select a number less than the maximum elevation . Query can change based on your criterion.  This arithmetic raster operation will select all cells with values above the defined threshold. In the example below a threshold of 500m was used.  A new layer appears on your map. The majority of the map has a 0 value representing false (values below the threshold), and the colored region has a value of 1 representing true ( eleva

Learning Object Based Classification Using eCognition

Object Based Classification Using eCognition tutorials by GIS HIVE . ImageSource:PixaBay   Lab 01 Performing Image Classification On High Resolution Data on Erdas Imagine Lab 02 Introduction to eCognition Basics Lab 03 Image Segmentation using eCognition Lab 04 Object Based Classification Using Standard NN eCognition Lab 05 Rule Based Classification using  eCognition GIS HIVE intends to promote Geo Spatial Sciences awareness, for that purpose GIS HIVE has launched Youtube Channel . Here you can explore various Geospatial tutorials.

What is Radiometric Resolution Of Satellite Image

Radiometric Resolution  is defined as magnitude of EM ( Electromagnetic Energy ) recorded by a sensor Units : Measured in Bits Formula: Each bit records an exponent Power of 2. 1 Bit= 2 2 Bit=4 4 Bit =16 8 Bit=255 digital values Note: 0 represents Black tone and maximum like 255 represents highest tone. image source  www.satimagingcorp.com 1 Bit will be Black & white 16 Bit will be colored 32 Bit will be more colored and will carry greater energy levels Higher Radiometric Resolution much variation in colors reflected. Image to left is of  higher radiometric resolution than that of Landsat below. image source: geoinfo.amu.edu.pl

Generating Contours From DEM In ArcMap

Contours are a useful way to visualize topography and to create a map that can be printed in black and white, or that mimics the standard USGS topo maps. Image by TheAndrasBarta from Pixabay What you need: DEM data of your Area. Extract your area from online freely  available   DEM and select  Spatial Analyst Tools -> Surface -> Contour.  Select the inputs as follows, with a 100m or 50m contour interval: since 10 m might take time. and click  OK. Contour tool in ArcMap Output may be some thing like depending on color scheme. Go to properties and label elevation values for a good visualization. Image source:  en.wikipedia.org

GeoDa Free GIS Software

What is GeoDa : GeoDa provides analysis of various data formats like  shapefile, GeoJSON, KML, SQLite and table format (CSV, XLS and DBF). Image by  Pexels  from  Pixabay   How it is related to GIS: It provides Geo-visualization, user can perform certain spatial analysis.  Good things about GeoDa:   GeoDa is an Open Source software,  Along with Spatial analysis, simpler & complex statistical data analysis performed in excel (charting, graphing ) can be performed in GeoDa.  Most suited for: It is most suitable for Students, Researchers. Downloadable link :  http://geoda.software.informer.com/1.8/  imagesource: GitHub

Climate Change Not Myth But Reality

Northern Areas of Pakistan are blessed with beauty, we often hear people quoting these beautiful areas as “Switzerland of Pakistan”, “Heaven on Earth”, but these words proved there reality when for the first time I visited Northern Pakistan. It is worth mentioning that Pakistan is dependent on frozen hydrological resources. Many rivers such as River Swat, Chitral, Gilgit, Hunza, Shigar, Shyok, Indus, Shingo, Astor, and Jhelum are fed by runoff generated by melting of SC of Northern areas. Image by Aqsa kamran from Pixabay Image by Abdullah Shakoor2 from Pixabay This runoff supports agriculture . Agriculture of Pakistan is largely dependent on the snow melting phenomenon. Anomalies witnessed in glaciers and their melting patterns will have massive impact on hydrological resources because the country’s 70% of fresh water depends upon these frozen hydrological resources in the high mountains of Himalaya and Hindu Ku

OBJECT-BASED BUILDINGS DETECTION & CHANGE ANALYSIS USING MULTI TEMPORAL HIGH RESOLUTION REMOTE SENSING DATA

With urbanization and urban sprawl, land-use and land-cover change studies became an area of keen interest for researchers. Cause of rapid urbanization is peoples’ responses to economic opportunities, and government policies. New housing societies and business model adopted overall globe has provided opportunities for new land uses . Image by  piviso  from  Pixabay   “Image Classification is the process of sorting pixels into a finite number of individual classes, categories of data based on their DN (Digital Number) values”.  With advent of modern high resolution era of satellite images, PIXEL based, Object based and many other machine learning algorithms have been developed. Currently the prospects of a new classification concept, Object-Based Classification , are being investigated. Recent studies have proven the accuracy of object-based classification over traditional classifiers. The object-based classification approach relies on basic principle to use other

How To View Satellite Image In ArcMap

Viewing Satellite Map in Arc Map " Are you  interested  to study satellite image, go to google and search for freely available online satellite images"  Image by  Daryl Govan  from  Pixabay   Download them, i have added tmrect.bil   named   imagery  here  Bands Added In ArcMap  Right Click tmrect.bil in ArcCatalog Select preview section and examine tmrect.bil What is tmrect: It is Landsat TM image with 5 bands . Right Click on tmrect and select properties All information of satellite image is available in Raster section. Explore tmrect.bil by expanding it you will see 5 bands in drop down Now Launch Arc Map Insert a new Data Frame by clicking on insert as shown Spatial Reference Dialogue  Now to Add Data Right Click Task Data Frame and click Add Data Select tmrect.bil a window “Unknown Spatial Reference” is displayed. Click  OK Arc map will display Raster Image as