eChapters

1. Introduction
Dyes are compounds after addition to a substrate, for a moment give it a colorthrough a process that modifies the colored substance’s crystal structure (Bafanaet al., 2011). Such varieties of compounds with significant coloring capacityare widely employed in the textile, pharmaceutical, food, photographic, andpaper industries (Zollinger et al., 1987). Dyes can adhere to suitable surfacesthrough methods such as dissolving, forming covalent bonds, complexing withsalts or metals, physically adsorbing, or being mechanically retained (Kirkand Othmer, 2004). The chemical structure and application of dyes determine
their classification. The dye color is produced by a collection of atoms calledchromophores. Chromophore centres, which are responsible for color, consistof various functional groups like azo, anthraquinone,methine, nitro, arylmethane, carbonyl, and others. Additionally, substituents that either donateor withdraw electrons to enhance or create the color of these chromophoresare called auxochromes. Common examples of auxochromes include amine,carboxyl, sulfonate, and hydroxyl groups. There are three methods for dyingtextile materials: batch, continuous, and semi-continuous. Thekind of materialincluding yarn, fabric, fiber, clothing, and fabric structure as well as the generalfiber size of the dye lot, type, and quality standards of the dyed fabric, all playa role in determining the dyeing method used. Among these techniques, theprocess called the batch procedure is the most frequently employed for dyeingtextile materials. (Ogugbue et al., 2011).

Ours is a Living Planet because ours is a Water Planet. The health of the Living Planet depends on the health of its water resources. Ironically, the health of its water resources is at stake. And so of its life! The waters of the Earth are in the grips of pollution. Much of the water is already polluted and the rest is increasingly becoming polluted. Water pollution, indeed, is one of the worst problems life on Earth is faced with. Water pollution is halting human progress and is phenomenally affecting all walks of human civilization. Water pollution is even putting a question mark on our sustainable future. This chapter presents the causes, magnitude, and consequences of water pollution and also suggests ways and means to prevent and control water pollution and also attempts to manage water resources.

2.1 Overview of the CDM Project Cycle

The ultimate governing body of the CDM is the Conference of the Parties/Meeting of the Parties to the Kyoto Protocol (COP/MOP). The COP/MOP is the annual meeting of the signatories to the Kyoto Protocol and is responsible for managing the CDM Executive Board and for overseeing its work. The Executive Board supervises the CDM process under the authority and guidance of the COP/MOP; it is fully accountable to the COP/MOP. The Board decides on rules for the implementation of the CDM, as well as making the final decisions about acceptance of methodologies, registration of projects and issuance of CERs. The Board is composed of 10 members and 10 alternates. The CDM Executive Board created an A/R Working Group to specifically oversee LULUCF under the CDM. The A/R Working Group provides guidance to LULUCF project developers and, using expert reviewers, makes recommendations on acceptance or rejection of LULUCF methodologies.

1.    Introduction    360
2.    Feedstocks for Biodiesel Production    361

    2.1.    Fats and oils, 362
    2.2.    Alcohols, 363
    2.3.    Catalysts and neutralizers, 367

1.    Introduction    392

2.    Landfill Gas    393

3.    Biogas    394

    3.1.    Benefits of biogas, 394
    3.2.    Potential of biogas, 395
    3.3.    Biogas production system, 396
        3.3.1.    Raw materials, 396
        3.3.2.    Biogas technology, 398
        3.3.3.    Process of anaerobic fermentation for methane generation, 400
        3.3.4.    Conditions for anaerobic fermentation, 404
        3.3.5.    Sludge-algae-methane system, 407
        3.3.6.    Biogas plant, 408

Most of the ecosystems prevailing on Earth have ceased to be virgin. They are now modified following anthropogenic designs. The Blossoming of a community in its climax stage is a rare sight. As human intervention with nature has gone on increasing, all types of biodiversity - genetic, species and community, and alpha, beta, and gamma - have been put under stress. The Earth has already lost much of its diversity due to anthropogenic factors and now it seems to be under severe stress due to climate change, which is also largely due to human-induced environmental disruptions.

Continuous loss of biodiversity at an alarming rate is posing a serious threat to life on earth. With this dismal state of the environment, we cannot usher in a sustainable future. We do not have the right to snatch the future from our younger generations. The Earth belongs to our children more than it does to us. The Earth belongs to future generations more than it does to present generations. Conservation of biodiversity is a matter of ethics. Ethics has the human face of biodiversity. Economic attributes of biodiversity have importance, but ethics of life 

6.1    Hydrological Cycle
    
6.2    Global Surface Waters
    
6.3    Surface Water over India
    
6.4    Ground Water Potentials in India
    
6.5    Influence of Drought on Water Resources, its Fauna and Flora
    6.5.1    Effects on Fauna and Flora
    
6.6    Influence of Changing Climate on Droughts and Water Resources
    6.6.1    Global warming and droughts at global scale
    6.6.2    Global warming on water resources at global scale
    6.6.3    Global warming and droughts at national scale in India
    6.6.4    Global warming impacts on water resources at National scale
        
References

“Natural” means an ecosystem not influenced by man and resources means that reserve stock of supply which living things can take from nature for sustenance of life. In reference to man, natural resources can be defined as those natural reserve stocks of supply which man utilizes for his sustenance and welfare. The reservoirs of natural resources are the sun,  the  atmosphere,  the  lithosphere  and the  hydrosphere.  Natural resources include energy, air, water, soil, minerals, plants and animals. The nature of resource depends upon many factors such as scientific and technological development of the society, profession of that particular society, and culture.

Any living organism in its natural habitat is called a wildlife. It may be plant animal or a microbe. The significance of wild life lies in setting up the balance of population in nature by maintaining food chains and food webs. It acts as the gene banks in relation to breeding of plants and animals for introduction of desirable characters such as high yield of economic product and resistance to diseases. The scientists are performing studies to screen and select useful genes in economically important organisms.

Abstract
 
Within the time scale for soil formation, humans appeared to the planet within the last 1 million years. They shifted their lifestyle from hunter-gatherer to nomadic animal husbandry and finally to cultivation of domesticated crops only within the last 10,000 yrs. Earlier, these crops were cultured in a semi-nomadic style as land was plentiful, so when soil lost its productivity, people abandoned it in favor of new-land. Gradually, as land became scarcer and population exploded, agriculture evolved to continuous cropping of the same parcel of land. This discovered the major concern for soil health. As organic matter is key to soil health, humus is the last stage of organic matter decomposition. Humus is a complex aggregate of dark brown colored amorphous substances, which have originated during the decomposition of plant and animal residues by microorganisms, under aerobic and anaerobic conditions. Humus and living microorganisms are connected by numerous ways which must be appreciated in order to understand the origin and nature of humus. Our attempt is to narrate the role of organic matter and vital role of microbes in humification process.

Agrobiodiversity is a key resource for humanity. All of the food retirements humanity depends on are fulfilled by agrobiodiversity. Not only this, fodder, fiber, firewood, and many other basic needs of humankind are also met by agrobiodiversity. Human’s dependence on agriculture - not only for survival and sustenance but also for socioeconomic progress, maintenance and celebration of cultural ethos, physical, intellectual, emotional, ethical, and aesthetic development, and psychological contentment and happiness - is inevitable.

Agrobiodiversity is critical for food security for the entire humanity as well as for the food sovereignty of a country. If we are to usher in a sustainable future - that is, a future to be witnessed by healthy, vibrant, and happy humanity (Singh 2019) - there is no choice other than protecting, conserving, and augmenting agrobiodiversity.

Over the past decades climate change and climate related disaster risks have become more important than ever. The effects of climate change are unprecedented today and thus pose serious risks for human wellbeing, livelihoods and life-supporting systems. They also present serious challenges to society, in addition, increased climate variability significantly undermine the socio-economic development and environment. The consequences of climatic change, such as increase in frequency and extent of droughts, floods, cyclones, mudslides and avalanches have impacts on all sectors of economy including water, agriculture, fisheries, health, forestry, transport, tourism and energy sectors. Amongst these sectors, the agricultural sector is one of the most vulnerable sectors to impacts of climate change, which can have multiplicative effects on other sectors, as well as the economy and overall human being. The projected climate change towards warming may affect not only the crop cultivation but also on agro-climatic conditions for growing pasture vegetation, forming of feed stocks in pastures and conditions for grazing livestock. Favourable conditions for grazing livestock are determined, on the one hand, by sufficient amount of forage in pastures and on the other, by the extreme weather conditions that restrict the use of these fodders.

Abstract

The balance between resources and population constitute the solid base for drawing the future map of sustainable development in the study area in all developmental sectors such as agriculture, industry, tourism, and commercial sectors. Geoenvironmental hazards such as erosion, sea level changes, sand dune encroachment, siltation of the navigation channel of the Damietta harbor, salinization of the soils, the negative effects of the protective structures and bad management of the coastal areas must be studied in details before making the future planning for any area. The main geomorphologic units in this area are: beaches, sand dunes, wetlands, urban areas, reclamation lands and lagoons.

The rate of erosion from 1984 to 2000 in the Rosetta beach is -117.6 m/yr, while it is -17.6 m/yr in the Damietta beach. On the other hand, the rate of erosion in the period from 1984 to 2005 is -104.6 m/yr and -11.4 m/yr in Rosetta and Damietta beaches, respectively. Since, Nile Delta is a typical wave dominated delta (Coleman et al., 1981) and Tide is a semi-diurnal microtidal regime with a maximum tidal range of 50 cm (UNESCO/UNDP, 1978), the erosion and accretion are very dangerous hazard in the area.

Due to the reclamation of vast areas of the coastal dunes, the lagoons and wetlands, the new reclaimed lands are added to the agricultural deltaic land. Thus, the coastal sand dunes, lagoons and wetlands are decreased. The main urban centers have expanded, and new urban centers (Damietta harbor, the New Damietta city and Mansoura city in near future) have been constructed at the expense of vast areas of lagoons, coastal dunes, and backshore flats. The siltation of the navigation canal of the Damietta harbor, salting of the soil (new and old) and sand dune encroachment are very important hazards in the study area. All the previous geoenvironmental hazards and others threaten the sustainable development in the study area.

Agricultural drought management is a critical aspect of ensuring food security and sustainable agricultural practices, particularly in regions prone to water scarcity. Droughts, characterized by prolonged periods of abnormally low rainfall, can have devastating effects on crop yields, livestock productivity, and the livelihoods of farmers. Effective drought management strategies are essential for mitigating these impacts and enhancing the resilience of agricultural systems. Agricultural drought occurs when the soil moisture is insufficient to meet the needs of crops, leading to reduced growth, lower yields, and increased plant stress. This type of drought can be particularly challenging because it directly affects food production and the agricultural economy. Unlike meteorological droughts, which are defined by the degree of dryness compared to normal conditions over a specific period, agricultural droughts focus on the impact of drought on crops and agricultural productivity.

3.1.Processes
                    
    Leaching                    
    Fragmentation/Comminution
    Catabolism                    
    Decomposition models
                
3.2. Patterns
                    
    Litter decomposition
    Root decomposition                    
    Limit values for decomposition            
    Decomposition pattern in ecosystems

1.1 Introduction

Increased emission of greenhouse gases results in climate change which becomes one of the most prominent environmental issues to the world today. Carbon dioxide (CO2) is the major greenhouse gas whereas nitrous oxide (N2O) and methane (CH4) are other substantial contributors to climate change (IPCC, 2014, Tongwane et al., 2016). However, these gases are emitted in minimal quantities in comparison to carbon dioxide but impart more global warming effect by absorbing more infrared radiations (Oertel et al., 2016). The warming potential of one kg of CH4 is 23 times more than one kg of CO2 while  in the case of N2O, it was nearly 300 times more than CO2 (Ramaswamy et al., 2001, Bharti et al., 2019; Biswas et al., 2010). Around one-third of methane and two –thirds of nitrous oxide come from soil (Prather et al., 1995, Tubiello et al., 2015, Smith, 2016).

The chapter focuses on presenting the outcomes and analysis of the research, aiming to offer ample information for reaching accurate conclusions. Within this chapter, tables and models are frequently employed to reinforce the textual content. The discussion section plays a crucial role in interpreting the research results appropriately and establishing connections with other pertinent studies.

The distribution characteristics of the variable Age (x1 ) reveals that the respondents’ ages range from a minimum of 27 to a maximum of 71. The average age is 48.675, suggesting that the majority of respondents fall into the middle-age category. The standard deviation is 11.574, indicating the degree of variability in the ages. Furthermore, the coefficient of variance (CV) is 23.779 percent, indicating a high level of consistency in the distribution pattern of the variable.

The distribution pattern of the variable Family size (x3 ) shows that the family size ranges from a minimum person of 3 to a maximum of 10 persons. The average family size is 10.125 persons. The standard deviation is 1.397. The coefficient of variance (CV) is 23.882 percent which indicates a high level of consistency in the distribution pattern of the variable.

Climate change and variability are concerns of humankind. The recurrent drought and desertification threaten seriously the livelihood of over 1.2 billion people who depend on land for most of their needs. The global economy has adversely been influenced due to droughts and floods, cold and heat waves, forest fires, landslips and mudslips, icestorms, duststorms, hailstorms, thunder clouds associated with lightning and the sea level rise (Fig. 1). The year 1998 was the warmest and declared as the weather related disaster year, which caused hurricane havoc in Central America and floods in China, India and Bangladesh. Canada and New England in the U.S suffered heavily due to icestorm in January while Turkey, Argentina and Paraguay with floods in June 1998. In contrast, huge crop losses were noticed in Maharashtra (India) due to unseasonal and poor distribution of rainfall during 1997-98. The 1997/1998 El Nino event, the strongest of the last century affected 110 million people and costed the global economy nearly US$ 100 billion. A string of 16 consecutive months saw record high global mean temperature in 1997-98.

The last century has witnessed a global change in agricultural practices. From high dependency on external input agriculture, the world is now shifting towards low external input sustainable agriculture (LEISA). The history of dustbowl devastation in 1930s in America has put agricultural practices, tillage in particular, to question (Friedrich et al., 2012). Traditionally, tillage was believed to be a primary farm operation for preparing a good seedbed, nutrient mobilization, weed management, moisture availability, crop residue incorporation (Hobbs et al., 2008), thereby improving the overall soil health with increased production (Farooq et al., 2011a). The dust bowl devastation of 1930s gave rise to the concept of protecting soil by reducing tillage operation and maintaining ground cover, popularized as conservation tillage (Friedrich et al., 2012). Economic and ecological sufferings caused by the disastrous droughts in USA during 1930s drove the shift towards conservation agriculture (CA) (Haggblade and Tembo, 2003).

Drought, a recurring and often devastating feature of climate variability, presents a unique challenge due to its slow onset, complex nature, and farreaching consequences. Unlike hazards with clear event boundaries, drought manifests across diverse spatial and temporal scales and impacts nearly every facet of the environment and human activity. Effectively understanding and managing this phenomenon necessitates an equally comprehensive approach: drought monitoring. This chapter introduces the essential concepts and methodologies underpinning this critical field, highlighting the remarkable breadth required to capture the full picture of drought conditions. • The scope of drought monitoring is inherently vast. Geographically, it spans from tracking localized water stress affecting a single farm or watershed to assessing conditions across entire regions, nations, and continents. Temporally, monitoring efforts must consider short-term deficits unfolding over weeks or months (critical for agriculture) as well as long-term hydrological imbalances developing over seasons, years, or even decades (impacting reservoirs and groundwater). Understanding current conditions crucially relies on comparing them against a deep historical context, requiring decades of baseline data